10-K 1 f38434e10vk.htm FORM 10-K e10vk
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
Form 10-K
 
     
(Mark One)    
þ
  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the fiscal year ended December 31, 2007
OR
o
  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the transition period from          to          
 
Commission file number 0-26339
 
JUNIPER NETWORKS, INC.
(Exact name of registrant as specified in its charter)
 
 
     
Delaware   77-0422528
(State or other jurisdiction of
incorporation or organization)
  (IRS Employer Identification No.)
1194 North Mathilda Avenue
Sunnyvale, California 94089
(Address of principal executive
offices, including zip code)
  (408) 745-2000
(Registrant’s telephone
number, including area code)
 
 
Securities registered pursuant to Section 12(b) of the Act: Common stock, $0.00001 par value
 
Securities registered pursuant to Section 12(g) of the Act: None
 
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
 
Yes o     No þ
 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act
 
Yes o     No þ
 
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filings requirements for the past 90 days.  Yes þ     No o
 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of the Form 10-K or any amendment to this Form 10-K.  þ
 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
 
             
Large accelerated filer þ
  Accelerated filer o   Non-accelerated filer o
(Do not check if a smaller reporting company)
  Smaller reporting company o
 
Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2 of the Exchange Act).  Yes o     No þ
 
The aggregate market value of the Common Stock held by non-affiliates of the Registrant was approximately $7,388,000,000 as of the end of the Registrant’s second fiscal quarter (based on the closing price for the Common Stock on the NASDAQ Global Select Market on June 30, 2007).
 
As of February 25, 2008 there were approximately 523,580,000 shares of the Registrant’s Common Stock outstanding.
 
 
DOCUMENTS INCORPORATED BY REFERENCE
 
As noted herein, the information called for by Part III is incorporated by reference to specified portions of the Registrant’s definitive proxy statement to be filed in conjunction with the Registrant’s 2008 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the Registrant’s fiscal year ended December 31, 2007.
 


 

 
Table of Contents
 
             
        Page
 
  Business     2  
  Risk Factors     16  
  Unresolved Staff Comments     28  
  Properties     28  
  Legal Proceedings     28  
  Submission of Matters to a Vote of Security Holders     28  
 
PART II
  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities     28  
  Selected Consolidated Financial Data     30  
  Management’s Discussion and Analysis of Financial Condition and Results of Operations     31  
  Quantitative and Qualitative Disclosure about Market Risk     59  
  Consolidated Financial Statements and Supplementary Data     62  
  Changes in and Disagreements with Accountants on Accounting and Financial Disclosures     116  
  Controls and Procedures     116  
  Other Information     117  
 
PART III
  Directors and Executive Officers of the Registrant     117  
  Executive Compensation     117  
  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters     117  
  Certain Relationships and Related Transactions, and Director Independence     118  
  Principal Accountant Fees and Services     118  
 
PART IV
  Exhibits and Financial Statement Schedules     118  
 EXHIBIT 10.20
 EXHIBIT 10.21
 EXHIBIT 12.1
 EXHIBIT 21.1
 EXHIBIT 23.1
 EXHIBIT 31.1
 EXHIBIT 31.2
 EXHIBIT 32.1
 EXHIBIT 32.2


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PART I
 
ITEM 1.   Business
 
Overview
 
We design, develop and sell products and services that together provide our customers with high-performance network infrastructure that creates responsive and trusted environments for accelerating the deployment of services and applications over a single Internet Protocol (“IP”)-based network. We serve the high-performance networking requirements of global service providers, enterprises, governments and research and education institutions that view the network as critical to their success. High-performance networking is designed to provide fast, reliable and secure access to applications and services. We offer a high-performance network infrastructure that includes best-in-class IP routing, Ethernet switching security and application acceleration solutions, as well as partnerships designed to extend the value of the network and worldwide services and support designed to optimize customer investments.
 
In the fiscal year ended December 31, 2007, we experienced growth in both product and service revenues. We also generated strong net income, operating margin, and cash flows from operations during 2007. We believe these results were driven by market demands and our focused execution of our two fundamental objectives: To establish our growth and momentum in the high-performance networking marketplace as reflected by top line performance, and to improve our leverage against those revenues, as demonstrated by the bottom line improvements in our financial results.
 
Our operations are organized into three reportable segments: Infrastructure, Service Layer Technologies (“SLT”), and Service. Our Infrastructure segment primarily offers scalable routing products that are used to control and direct network traffic from the core, through the edge, aggregation and the customer premise equipment level. Infrastructure products include our IP routing and carrier Ethernet routing portfolio, as well as our recently announced Ethernet switching portfolio. Our SLT segment offers solutions that meet a broad array of our customer’s priorities, from protecting the network itself, and protecting data on the network, to maximizing existing bandwidth and acceleration of applications across a distributed network. SLT products include firewall and virtual private network (“VPN”) systems and appliances, secure sockets layer virtual private network (“SSL”) appliances, intrusion detection and prevention (“IDP”) appliances, application front end platforms, the J-series router product family, integrated Secure Services Gateway (“SSG”) secure router product offerings and wide area network (“WAN”) optimization platforms. Together, our high-performance network infrastructure offerings help enable our customers to convert legacy networks that provide commoditized, best efforts services into more valuable assets that provide differentiation and value and increased performance, reliability and security to end users. Our Service segment delivers world-wide services to customers of the Infrastructure and SLT segments.
 
During our fiscal year ended December 31, 2007 we generated net revenues of $2.8 billion and conducted business in more than 100 countries around the world. See Item 8 of Part II for more information on our consolidated financial position as of December 31, 2007 and 2006 and our consolidated results of operations, consolidated statements of stockholders’ equity, and consolidated statements of cash flows for each of the three years in the period ended December 31, 2007.
 
We were incorporated in California in 1996 and reincorporated in Delaware in 1998. Our corporate headquarters are located in Sunnyvale, California. Our website address is www.juniper.net.
 
Our Strategy
 
Our objective and strategy is to be the leading provider of high-performance networking. We offer a high-performance network infrastructure that creates a responsive and trusted environment for accelerating the deployment of services and applications over a single IP-based network. We believe our open network infrastructure provides customers with greater choice and control in quickly meeting high-performance business requirements, while enabling them to reduce costs. Our strategy is designed to advance the fundamentals and economics of high-performance networking. Key elements of our strategy are described below.


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Maintain and Extend Technology Leadership
 
Our application-specific integrated circuit (“ASIC”) technology, JUNOS operating system and network-optimized product architecture have been key elements to establishing and maintaining our technology leadership. We believe that these elements can be leveraged into future products that we are currently developing. We intend to maintain and extend our technological leadership in the service provider and enterprise markets primarily through innovation and continued investment in our research and development departments, supplemented by external partnerships, including strategic alliances, as well as acquisitions that would allow us to deliver a broader range of products and services to customers in target markets.
 
Leverage Position as Supplier of High-Performance Network Infrastructure
 
From inception we have focused on designing, developing and building high-performance network infrastructure for demanding service provider and enterprise networking environments and have integrated purpose-built technology into a network optimized architecture that specifically meets our customers’ needs. We believe that many of these customers will deploy networking equipment from only a few vendors. We believe that the performance, reliability and security of our products provide us with a competitive advantage, which is critical in gaining selection as one of these vendors.
 
Be Strategic to Our Customers
 
In developing our infrastructure and SLT solutions, we work very closely with customers to design and build best-in-class products specifically designed to meet their complex needs. Over time, we have expanded our understanding of the escalating demands and risks facing our customers. That increased understanding has enabled us to subsequently design additional capabilities into our products. We believe our close relationships with, and constant feedback from, our customers have been key elements in our design wins and rapid deployments to date. We plan to continue to work hand-in-hand with our customers to implement product enhancements as well as to design future products that meet the evolving needs of the marketplace, while enabling customers to reduce costs.
 
Enable New IP-Based Services
 
Our platforms enable network operators to quickly build and secure networks cost-effectively and deploy new differentiated services to drive new sources of revenue more efficiently than legacy network products. We believe that the secure delivery of IP-based services and applications, including IP Television (“IPTV”), web hosting, outsourced Internet and intranet services, outsourced enterprise applications and voice-over IP, will continue to grow and are cost-effectively enabled by our high-performance network infrastructure offerings.
 
Establish and Develop Industry Partnerships
 
Our customers have diverse requirements. While our products meet certain requirements of our customers, our products are not intended to satisfy certain other requirements. Therefore, we believe that it is important that we attract and build relationships with other industry leaders in a diverse set of technologies and services that extend the value of the network for our customers. These partnerships ensure that we have access to those technologies and services, whether through technology integration, joint development, resale or other collaboration, in order to better support a broader set of our customers’ requirements. In addition, we believe in an open network infrastructure that invites partner innovation and provides customers with greater choice and control in meeting their evolving business requirements, while enabling them to reduce costs.


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Markets and Customers
 
We sell our high-performance network products and service offerings through direct sales and through distributors and value-added resellers to end-users in the following markets:
 
Service Providers
 
Service providers include wireline, wireless, and cable operators as well as major internet content and application providers. Supporting most major service provider networks in the world, our high-performance network infrastructure offerings are designed and built for the performance, reliability and security that service providers demand. Our networking infrastructure offerings benefit these customers by:
 
  •   Reducing capital and operational costs by running multiple services over the same network using our high density, highly reliable platforms;
 
  •  Promoting generation of additional revenue by enabling new services to be offered to new market segments based on our product capabilities;
 
  •  Increasing customer satisfaction, while lowering costs, by enabling consumers to self-select automatically provisioned service packages that provide the quality, speed and pricing they desire; and
 
  •  Providing increased asset longevity and higher return on investment as their networks can scale to multi-terabit rates based on the capabilities of our platforms.
 
While many of these service providers have historically been categorized separately as wireline, wireless, or cable operators, in recent years we have seen a move towards convergence of these different types of service providers through acquisitions, mergers and partnerships. We believe these strategic developments are made technically possible as operators invest in the build out of next generation networks (“NGN”) capable of supporting voice, video and data traffic on to the same IP-based network. This convergence relies on IP-based traffic processing and creates the opportunity for multi-service networks including new service offerings such as IPTV. These new services offer service providers significant new revenue opportunities.
 
We believe that there are several other trends affecting service providers for which we are well positioned to deliver products and solutions. These trends include significant growth in IP traffic on service provider networks as a result of peer-to-peer interaction, broadband usage, video, and an increasing reliance on the network as a mission critical business tool in the strategies of our IP customers, and of their enterprise customers.
 
The IP infrastructure market for service providers includes: products and technology at the network core; the network edge to enable access; the aggregation layer; security to protect from the inside out and the outside in; the application awareness and intelligence to optimize the network to meet business and user needs; and the management, service awareness and control of the entire infrastructure.
 
We have sold our products to all of the 65 largest service providers in the world.
 
Enterprise
 
Our high-performance network infrastructure offerings are designed to meet the performance, reliability and security requirements of the world’s most demanding businesses. For this reason, enterprises, federal, state and local governments, and research and education institutions that view their networks as critical to their success are able to deploy our solutions as a powerful component in delivering the advanced network capabilities needed for their leading-edge applications while:
 
  •  Assisting in the consolidation and delivery of existing services and applications;
 
  •  Accelerating the deployment of new services and applications;
 
  •  Offering integrated security to assist in the protection and recovery of services and applications; and
 
  •  Offering operational improvements that enable cost reductions, including lower administrative, training, customer care and labor costs.


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The enterprise market continued to be an important part of our business growth during 2007, driven in particular by growth in the second half of the year. Since we first entered the market, we have sold our products to more than 30,000 enterprise customers.
 
As with the service provider market, innovation continues to be a critical component in our strategy for the enterprise market. We believe that innovative enterprises view the network as critical to their success and therefore must build advanced network infrastructures that provide fast, reliable and secure access to services and applications over a single IP-based network. These high-performance enterprises require networks that are global, distributed and always available. Network equipment vendors need to demonstrate performance, reliability and security to these customers in specific segments with best-in-class open solutions for maximum flexibility. We offer enterprise solutions and services for data centers, branch and campus applications, distributed and extended enterprises, and WAN gateways.
 
As customers increasingly view the network as critical to their success, we believe that customers will increasingly demand fast, reliable and secure access to services and applications over a single IP-based network. This is partly illustrated by the increasing success of our Integrated Security Gateway (“ISG”) products that combine firewall/VPN and IDP solutions in a single platform and SSG platforms that provide a mix of high-performance security with Local Area Network (“LAN”)/WAN connectivity for regional and branch office deployments. We will continue to invest to develop these and other converged technologies and solutions.
 
Fundamental Requirements for High Performance Networking
 
Our service provider customers have clearly communicated their fundamental business requirement to quickly and cost-effectively deploy new differentiated services to drive new sources of revenue.
 
Our enterprise customers are under pressure to accelerate the delivery of service-enabling applications to build differentiation and sustainable growth.
 
In parallel, both service providers and enterprises must focus on proactively detecting and preventing the ever increasing number of security threats facing the network itself and the data that flows across the network. This security must be innate to networking products and must not come at the expense of overall performance or unjustifiable cost.
 
This is driving the fundamental requirement for high-performance networking, providing fast, reliable and secure access to applications and services over a single IP-based network. Feature richness, high reliability, security, high performance, scalability, and cost effectiveness are each fundamental requirements in meeting the needs associated with the growth in IP traffic and the delivery of value-added services to end users.
 
Feature Richness.  The importance of increasing revenue streams and decreasing capital and operational costs for our customers is a significant priority in the industry. Service providers want to quickly and cost effectively deploy new differentiated services to drive new sources of revenue. Enterprises and other network operators want to accelerate the delivery of service-enabling applications to build differentiation and growth. Each of these goals is ultimately a function of the features and capabilities that can be securely provided on each of the network elements. As networks advance, more and more features are required to sell new services as well as to lower the ongoing costs of operating the network. Next generation networking solutions therefore need to have flexibility to add new capabilities frequently without compromising the performance of the system, which gets increasingly difficult as the network demands increase.
 
High Reliability.  As businesses and consumers increasingly rely on IP networks for mission-critical applications, high network reliability is critical to success. As a result, those businesses and consumers expect service providers to deliver a high degree of reliability in their networks.
 
Security.  Today’s network environment presents an ever-increasing number of challenges regarding network security ranging from simple denial of service attacks to sophisticated, pervasive and malicious intrusions. The importance of security is increasing within all of our customers and we are continually improving and evolving the security capabilities on all of our product solutions. It is extremely important to provide comprehensive network-


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based security services that are fully integrated, free of performance trade-offs, and scaleable to any customer or market.
 
High-Performance Without Compromising Intelligence.  To handle the rapid growth in IP traffic, today’s customers increasingly require fast, reliable and secure networking solutions that can operate at higher speeds, while still delivering real-time services such as security and quality-of-service features. The processing of data packets at these high speeds requires sophisticated forwarding technology to inspect each packet and assign it to a destination based on priority, data type and other considerations. Because a large number of IP packets, many of which perform critical administrative functions, are small in size, high-performance IP routers need to achieve their specified transmission speeds even for small packet sizes. Because smaller packets increase packet processing demands, routing large numbers of smaller packets tends to be more resource intensive than routing of larger packets. A wire speed router, which achieves its specified transmission rate for any type of traffic passing through it, can accomplish this task. Thus, provisioning of mission-critical services increasingly requires the high performance enabled by wire speed processing.
 
High-Performance Under Stressful Conditions.  In a large and complex network, individual components inevitably fail. However, the failure of an individual device or link must not compromise the network as a whole. In a typical network, when a failure occurs, the network loses some degree of capacity and, in turn, a greater load falls on the remaining network routers, which must provide alternate routes. High-performance network infrastructure must quickly adapt to the new state of the network to maintain packet forwarding rates and avoid dropping significant numbers of packets when active routes are lost or when large numbers of routes change. Routing protocols are used to accomplish this convergence, a process that places even greater stress on the router. Given the complexity of IP network infrastructure, the convergence process is complex and places a far greater load on the router, thereby requiring a much more sophisticated device.
 
Scalability.  Due to the rapid growth in IP traffic, service providers must continuously expand their networks, both in terms of increased numbers of access points of presence (“PoPs”), and also greater capacity per PoP. To facilitate this expansion process, secure networking solutions must be highly scalable. Next generation network appliances therefore need to be flexible and configurable to function within constantly changing networks while incurring minimal downtime.
 
High Return on Investment.  Continued growth in IP traffic, price competition in the telecommunications market and increasing pressure for network operators to attain higher returns on their network infrastructure investments all contribute to our customers’ desire for solutions that significantly reduce the capital expenditures required to build and operate their networks. In addition to the basic cost of equipment, network operators incur substantial ancillary costs for the space required to deploy the equipment, power consumed and ongoing operation and maintenance of the equipment. Network operators therefore want to deploy dense and varied equipment configurations in limited amounts of rack and floor space, with increasing consideration to energy and cooling requirements and costs. Therefore, in order to continue to scale their networks toward higher data speeds in a cost effective manner, network operators need the ability to mix and match easily many different speed connections at appropriate densities, without significantly increasing the consumption of space or power and driving costs higher.
 
These requirements define a clear need for high-performance networking solutions that have been designed to support high speeds and offer new IP-based services. At the same time, network operators are eagerly seeking new solutions that increase the level of scalability and reliability within their networks, while reducing the cost and complexity of their architectures.
 
Our Technology and Products
 
Early in our history, we developed, marketed and sold the first commercially available purpose-built IP backbone router optimized for the specific high-performance requirements of service providers. As the need for core bandwidth continued to increase, the need for service rich platforms at the edge of the network was created. Our infrastructure products are designed to address the needs at the core and the edge of the network as well as for wireless access by combining high-performance packet forwarding technology and robust operating systems into a network-optimized solution. In addition, as enterprises continue to develop and rely upon more sophisticated and pervasive internal networks, we believe the need for products with high-performance routing technology is


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expanding to a broader set of customers, and we believe our expertise in this technology uniquely positions us to address this growing market opportunity.
 
Additionally, we offer a broad family of network security solutions that deliver high-performance, cost-effective security for enterprises, service providers and government entities, including firewall and VPN systems and appliances, SSL appliances, and IDP appliances. With the 2005 acquisitions of Funk Software, Inc. (“Funk”), Peribit Networks, Inc. (“Peribit”), Redline Networks, Inc. (“Redline”), and Kagoor Networks, Inc. (“Kagoor”), we added complementary products and technologies to our product families that enable our customers to provide additional IP-based services and enhance the performance and security of their existing networks and applications.
 
Infrastructure Products
 
We believe that an overview of the physical nature of our infrastructure products is helpful in understanding the operation of our business.
 
Although specific designs vary among our product families, our router platforms are essentially modular, with the chassis serving as the base of the platform. The chassis contains components that enable and support many of the fundamental functions of the router, such as power supplies, cooling fans, and components that run the operating system, perform high-speed packet forwarding, or keep track of the structure of the network and instruct the packet forwarding components where to send packets. Each chassis has a certain number of slots that are available to be populated with components we refer to as modules or interfaces.
 
The modules are the components through which the router receives incoming packets of data from the network over a variety of transmission media. The physical connection between a transmission medium and a module is referred to as a port. The number of ports on a module varies widely depending on the functionality and throughput offered by the module. In some cases, modules do not contain ports or physically receive packets from the network, but rather provide additional capabilities or features that enhance the overall functionality of the router. We refer to these components as service modules.
 
Our new EX-Series family of Ethernet switches include Virtual Chassis and fixed configuration design elements. Virtual Chassis technology allows up to ten switches to be interconnected and operate as a single system, thereby enabling higher port density in a compact and efficient form factor. Our fixed configuration switch platforms offer a cost-effective standalone solution for low-density deployments.
 
Major infrastructure product families are summarized as follows:
 
  •  M-Series and T-Series:  Our M-series routers are extremely versatile as they can be deployed at the edge of operator networks, in small and medium core networks, enterprise networks and in other applications. The M-series product family includes the M320, M160, M120, M40e, M20, M10i and M7i platforms. Our T-series core routers, T1600, T640, T320, and TX Matrix, are primarily designed for core IP infrastructures and are also being sold into the multi-service environment (“MSE”). The M-series and T-series products leverage our ASIC technology and the same JUNOS operating system to enable consistent, continuous, reliable and predictable service delivery.
 
  •  E-Series:  Our E-series products are a full featured platform with support for carrier-class routing, broadband subscriber management services and a comprehensive set of IP services. The E-series family includes the ERX-1440, -1410, -710, -705 and -310 platforms and the E320 and E120 broadband service routers. Leveraging our JUNOSe operating system, the E-Series service delivery architecture enables service providers to easily deploy innovative revenue generating services to their customers and avoid the costly and limiting piecemeal outcomes that result from equipment that delivers inconsistent edge services. All E-Series platforms offer a full suite of routing protocols and provide scalable capacity for tens of thousands of users.
 
  •  MX-Series:  The MX-Series is a product family developed to address emerging Ethernet network architectures and services in service provider and enterprise networks, and includes the MX960, MX480 and MX240. Using our JUNOS operating system, the MX platforms provide the carrier-class performance, scale and reliability to enable service providers and enterprises to support large scale Ethernet deployments.


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  •  EX-Series:  In January 2008, we announced our EX-series family of Ethernet switches, expanding our product portfolio running our JUNOS operating system. Ethernet is a widely-used technology used to transport information in enterprise networks. We believe our new EX-series switches will enable customers to accelerate and simplify the way they install and manage business applications across their networks and enhance network operations without comprising performance.
 
SLT Products
 
SLT products provide network security solutions and enable our customers to provide additional IP-based services and enhance the performance and security of their existing networks and applications.
 
Major SLT product families are summarized as follows:
 
  •  Firewall and VPN Systems:  Our NS-5400, -5200, and -500 products and ISG-2000 and -1000 products are high-performance security systems designed to provide integrated firewall, VPN and denial of service protection capabilities for enterprise environments and service provider network infrastructures. Our ISG-2000 and -1000 products can also deliver intrusion detection and prevention functionality with the addition of optional security modules to the base ISG chassis. Each of our firewall and VPN systems can be deployed in high bandwidth environments and can be used to deliver managed security services. Our firewall and VPN systems allow unique security policies to be enforced for multiple virtual local area networks, or Virtual LANs (“VLANs”), allowing a single system to secure multiple networks. Our security systems also allow for the creation of multiple Virtual Systems, each providing a unique security domain with its own virtual firewall and VPN and dedicated management interface. These features enable enterprises, service providers and government entities to use a single security system to secure multiple networks and enable carriers to deliver security services to multiple customers.
 
  •  Firewall and VPN Appliances:  Our SSG family of secure routing products represents a new class of purpose-built security appliance that delivers a mix of high performance, security and LAN/WAN connectivity for regional and branch office deployments. The SSG appliances combine proven firewall/VPN and robust routing with a set of Unified Threat Management (“UTM”) security features to protect traffic as it flows in and out of the branch office. Our NS-208, -204, -100, -50, -25, -5XT and -5XP security appliances are fixed configuration products of varying performance characteristics that offer integrated firewall, VPN and denial of service protection capabilities. Our security appliances are designed to maximize security and performance while using less physical space than competing products. Our security appliances can be deployed to provide small to medium-sized businesses and enterprise remote locations with secure Internet access and communication.
 
  •  SSL VPN Appliances:  Our Secure Access-6000, -4000, -2000, and -700 appliances are used to secure remote access for mobile employees, secure extranets for customers and partners, and secure intranets. Our SSL VPN appliances are designed to be used in enterprise environments of all sizes.
 
  •  IDP Appliances:  Our IDP-1100, -600, -200 and -50 appliances utilize intrusion detection methods to increase the attack detection accuracy and provide the broadest attack detection coverage available. Our IDP appliances provide fast and efficient traffic processing and alarm collection, presentation and forwarding. Once an attack is detected, our IDP appliances prevent the intrusion by dropping the packets or connection associated with the attack, reducing or eliminating the effects of the attack. Our IDP appliances can also alert the IT staff to respond to the attack. Our IDP appliances can be clustered to provide high availability and reduce risk associated with a single point of failure.
 
  •  Application Acceleration Platforms:  Our WX and WXC products improve the performance of client-server and web-enabled business applications for branch-office, remote, and mobile users. These application acceleration platforms enable our customers to deliver LAN-like performance to users around the globe who access centralized applications.
 
  •  Unified Access Control (“UAC”) Solution:  Using our UAC 2.1 solution, our IC-4000 and -6000 appliances combine identity-based policy and end-point intelligence to give enterprises real-time visibility and policy control throughout the network.


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  •  AAA and 802.1X Products:  Our family of AAA and 802.1X network access security products, including our Odyssey Access Client and Steel Belted Radius products, are a key component to uniform security policy enforcement across all network access methods, including wireless LAN, remote/VPN, dial, and identity-based (wired 802.1X) methods.
 
In 2007 and the first quarter of 2008, we announced several significant new products in our Infrastructure and SLT product categories including, but not limited to, the following:
 
Infrastructure:
 
  •  Our portfolio of Session and Resource Control solutions, which provide subscriber management and policy control capabilities, enabling service providers to deliver a high-quality user experience for “multi-play” and mobile services in next-generation networks. The Session and Resource Control portfolio features modular software applications that build upon the feature set of our SDX-300 Service Deployment System, and the new C-series family of controllers which support end-to-end policy management on a dedicated, purpose-built platform.
 
  •  The newest member of the T-series family, the T1600 core router. Capable of delivering 1.6 Tbps of throughput in a single half-rack chassis, the T1600 core router is designed to ease the transition to next-generation networks and enable service providers to efficiently accelerate the deployment of the services demanded by their customers.
 
  •  The E120 broadband services router, a platform capable of delivering up to 120 Gbps of capacity in a compact chassis with support for up to 64,000 individual subscribers. This router enables service providers to efficiently generate incremental revenue and shares the same proven JUNOSe operating system, line cards and interface modules as the widely-deployed E320 router.
 
  •  An expansion of our MX-Series family of Ethernet Services Routers with the additions of the MX480 and MX240. Designed to address emerging Ethernet network architectures and services, each platform scales to support over 1 million media access control (“MAC”) addresses which enables service providers to effectively scale Ethernet to support large service provider deployments.
 
  •  The EX-series of Ethernet switches described above.
 
SLT:
 
  •  ScreenOS version 6.0 operating system for the ISG and SSG platforms and version 4.1 software for our IDP products. These software releases provide our customers with advanced visibility and control of applications and users, enabling them to set and enforce security policies across the network and enhance application delivery and performance to improve user productivity and to keep pace with escalating business requirements.
 
  •  The J2320 and J2350 J-series services routers, SSG 320M and SSG 350M security platforms and two new network management appliances with NetScreen-Security Manager (“NSM”) Central Manager and NSMXpress. The new J-series, SSG and NSM products are designed to enable enterprises to accelerate the secure delivery of business critical applications across their networks.
 
  •  Software enhancements to our SSL VPN appliances that provide support for a broader array of applications and platforms, enhanced access control, and policy enforcement capabilities designed to meet the requirements of high-performance businesses.
 
  •  Version 2.1 of UAC solution, advancing our ability to address the evolving access control and security requirements of customers. UAC 2.1 helps reduce the complexity of securing access to networks and applications and delivers access control, visibility and monitoring of applications and users to help address regulatory compliance while mitigating risk and exposure to today’s rapidly evolving threat landscape.


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  •  New additions to our WX and WXC application acceleration platforms fortified application security without compromising performance and enhancements to the WX Central Management System allow for the integration of content distribution and WAN optimization within a single platform.
 
See Note 11 in Item 8 for a breakdown of net product revenues by segment.
 
Customer Service and Support
 
In addition to Infrastructure products and SLT products, we offer the following services: 24x7x365 technical assistance, hardware repair and replacement parts, unspecified software updates on a when and if available basis, professional services and educational services. We deliver these services directly to major end users and also utilize a multi-tiered support model, leveraging the capabilities of our partners and third-party organizations as appropriate.
 
We also train our channel partners in the delivery of education and support services to ensure locally delivered training.
 
As of December 31, 2007, we employed 748 people in our worldwide customer service and support organization. We believe that a broad range of support services is essential to the successful customer deployment and ongoing support of our products and we have hired support engineers with proven network experience to provide those services.
 
Manufacturing and Operations
 
As of December 31, 2007, we employed 190 people in manufacturing and operations who primarily manage relationships with our contract manufacturers, manage our supply chain, and monitor and manage product testing and quality.
 
We have manufacturing relationships primarily with Celestica, Flextronics and Plexus, under which we have subcontracted the majority of our manufacturing activity. Our manufacturing activity is primarily conducted in Canada, China and the United States.
 
This subcontracting activity in all locations extends from prototypes to full production and includes activities such as material procurement, final assembly, test, control, shipment to our customers and repairs. Together with our contract manufacturers, we design, specify and monitor the tests that are required to meet internal and external quality standards. These arrangements provide us with the following benefits:
 
  •  We can quickly deliver products to customers with turnkey manufacturing and drop-shipment capabilities;
 
  •  We gain economies of scale because, by purchasing large quantities of common components, our contract manufacturers obtain more favorable pricing than if we were buying components alone;
 
  •  We operate without dedicating significant space to manufacturing operations; and
 
  •  We can reduce our costs by reducing fixed overhead expenses.
 
Our contract manufacturers manufacture our products based on rolling forecasts from us about our product demands. Each of the contract manufacturers procures components necessary to assemble the products in our forecast and test the products according to our specifications. Products are then shipped to our distributors, value-added resellers or end-users. Generally, we do not own the components and title to the products transfers from the contract manufacturers to us and immediately to our customers upon delivery at a designated shipment location. If the components go unused or the products go unsold for specified periods of time, we may incur carrying charges or obsolete material charges for components that our contract manufacturers purchased to build products to meet our forecast or customer orders.
 
Although we have contracts with our contract manufacturers, those contracts merely set forth a framework within which the contract manufacturer may accept purchase orders from us. The contracts do not require them to manufacture our products on a long-term basis.


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Our ASICs are manufactured primarily by sole or limited sources, such as IBM Corporation and Toshiba Corporation, each of whom is responsible for all aspects of the production of the ASICs using our proprietary designs.
 
Juniper Networks has at its core five key values: trust, integrity, respect, humility and excellence. These values are integral to how we manage our company and interact with our employees, customers, partners and suppliers. By working collaboratively with our suppliers, we also have the opportunity to promote socially responsible business practices beyond Juniper Networks and into our worldwide supply chain. To this end, we have adopted, and promote the adoption by others, of the Electronic Industry Code of Conduct. The Electronic Industry Code of Conduct outlines standards to ensure that working conditions in the electronics industry supply chain are safe, that workers are treated with respect and dignity, and that manufacturing processes are environmentally responsible.
 
Research and Development
 
As of December 31, 2007, we employed 2,563 people in our worldwide research and development organizations. Our research and development expenses totaled $623.0 million, $480.3 million and $357.3 million in the years ended December 31, 2007, 2006 and 2005, respectively. We have assembled a team of skilled engineers with extensive experience in the fields of high-end computing, network system design, ASIC design, security, routing protocols and embedded operating systems. These individuals have worked in leading computer data networking and telecommunications companies.
 
We believe that strong product development capabilities are essential to our strategy of enhancing our core technology, developing additional applications, incorporating that technology and maintaining the competitiveness of our product and service offerings. In our infrastructure and SLT products, we are leveraging our ASIC technology, developing additional network interfaces targeted to our customer applications and continuing to develop next generation technology to support the anticipated growth in IP network requirements. We continue to expand the functionality of our products to improve performance reliability and scalability, and to provide an enhanced user interface.
 
Our research and development process is driven by the availability of new technology, market demand and customer feedback. We have invested significant time and resources in creating a structured process for all product development projects. Following an assessment of market demand, our research and development team develops a full set of comprehensive functional product specifications based on inputs from the product management and sales organizations. This process is designed to provide a framework for defining and addressing the steps, tasks and activities required to bring product concepts and development projects to market.
 
Sales and Marketing
 
As of December 31, 2007, we employed 1,863 people in our worldwide sales and marketing organizations. These sales employees operate in different locations around the world in support of our customers.
 
Our sales organization is organized into three geographic regions and within each region according to the particular needs in that market. Our three geographic regions are (i) the Americas (including United States, Canada, Mexico, Central and South America), (ii) Europe, Middle East and Africa and (iii) Asia Pacific. Within each region there are regional and country teams to ensure we operate close to the customer.
 
The sales teams operate in their respective regions and generally either engage customers directly or manage customer opportunities through our distribution and reseller relationships or channels as described below. In the United States and Canada, we sell to several service providers directly and sell to other service providers and enterprise customers primarily through resellers. Almost all of our sales outside the United States and Canada are made through our channel partners.
 
See Note 11 in Item 8 for information concerning our revenues by significant customers and by geographic region. Our operations subject us to certain risks and uncertainties associated with international operations. See Item 1A of Part I, “Risk Factors” for more information.


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Direct Sales Structure
 
Where we have a direct relationship with our customers, the terms and conditions are governed either by customer purchase orders and our acknowledgement of those orders or by purchase contracts. In instances where we have direct contracts with our customers, those contracts set forth only general terms of sale and do not require customers to purchase specified quantities of our products. For this type of customer our sales team engages directly with the customer. Customer purchase orders are received, and processed directly, by Juniper Networks.
 
Channel Sales Structure
 
A critical part of our sales and marketing efforts are our channel partners through which we do the majority of our business. We employ various channel partners:
 
  •  A global network of strategic distribution relationships, as well as region or country-specific distributors who in turn sell to local value added resellers who sell to the end-user customer. The distribution channel partners mainly sell our SLT products plus some router products that are often purchased by our enterprise customers. These distributors tend to be focused on particular regions or particular countries within regions. For example, we have substantial distribution relationships with Ingram Micro in the Americas and with NEC in Japan. Our agreements with these distributors are generally non-exclusive, limited by region, and provide product discounts and other ordinary terms of sale. These agreements do not require our distributors to purchase specified quantities of our products.
 
  •  Direct value-added resellers including our strategic resellers referenced below, which resell our products to end-users around the world. These direct value-added resellers buy the products and services directly from us and have expertise in deploying complex networking solutions in their respective markets. Our agreements with these direct value-added resellers are generally non-exclusive, limited by region, and provide product discounts and other ordinary terms of sale. These agreements do not require our direct value-added resellers to purchase specified quantities of our products.
 
  •  Strategic world-wide reseller relationships with Nokia-Siemens Networks B.V. (“NSN”), Ericsson Telekom A.B. and Alcatel-Lucent. These companies each offer services and products that complement, but in some cases compete with, our own product offerings and act as a fulfillment partner for our products. Our arrangements with each of these partners allow them to resell our products on a worldwide, non-exclusive basis, provide for discounts based upon the volume of products sold and specify other general terms of sale. The agreements do not require these partners to purchase specified quantities of our products. NSN accounted for greater than 10% of our total net revenues in 2007.
 
Within each region we employ sales professionals to assist with the management of our various sales channels. In addition we have a “direct touch” sales team that works directly with the channel partners on key accounts in order to maintain a direct relationship with our more strategic end user customers while at the same time supporting the ultimate fulfillment of product through our channel partners.
 
Our sales organization is generally split between service provider and enterprise customers, with each separate team ensuring focus on the key customers in these respective markets. There is a structure of sales professionals, system engineers, and marketing and channel teams each focused on the respective service provider and enterprise markets.
 
Backlog
 
Our sales are made primarily pursuant to purchase orders under framework agreements with our customers. At any given time, we have orders for products that have not been shipped and for services that have not yet been performed for various reasons. Because we believe industry practice would allow customers to cancel or change orders with limited advance notice prior to shipment or performance, as well as our history of allowing such changes and cancellations, we do not consider this backlog to be firm and do not believe our backlog information is necessarily indicative of future revenue.


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Seasonality
 
Many companies in our industry experience adverse seasonal fluctuations in customer spending patterns, particularly in the first and third quarters. In addition, our SLT segment has experienced seasonally strong customer demand in the fourth quarter. This historical pattern should not be considered a reliable indicator of our future net revenues or financial performance.
 
Competition
 
Infrastructure Business
 
In the network infrastructure business, Cisco Systems has historically been the dominant player in the market. However, other companies such as Alcatel-Lucent, Ericsson, Extreme Networks, Inc., Foundry Networks, Inc., Huawei Technologies Co., Ltd., and Nortel Networks Corporation, are providing competitive products in the marketplace.
 
Many of our current and potential competitors, such as Cisco, Alcatel-Lucent, Huawei and Nortel have significantly broader product lines than we do and may bundle their products with other networking products in a manner that may discourage customers from purchasing our products. In addition, consolidation among competitors, or the acquisition of our partners and resellers by competitors, can increase the competitive pressure faced by us. For example, in 2006 Alcatel combined with Lucent Technologies, Inc. and Ericsson acquired Redback Networks. Also, many of our current and potential competitors have greater name recognition and more extensive customer bases that could be leveraged. Increased competition could result in price reductions, fewer customer orders, reduced gross margins and loss of market share, any of which could seriously harm our operating results.
 
SLT Business
 
In the market for SLT products, Cisco generally is our primary competitor with its broad range of products. In addition, there are a number of other competitors for each of the product lines within SLT, including Checkpoint Software Technologies, Fortinet, Inc., F5 Networks, Inc., Nortel and Riverbed Technology, Inc. These additional competitors tend to be focused on single product line solutions and therefore are generally specialized and focused as competitors to our products. In addition, a number of public and private companies have announced plans for new products to address the same needs that our products address. We believe that our ability to compete with Cisco and others depends upon our ability to demonstrate that our products are superior in meeting the needs of our current and potential customers.
 
For both product groups we expect that, over time, large companies with significant resources, technical expertise, market experience, customer relationships and broad product lines, such as Cisco, Alcatel-Lucent, Huawei and Nortel, will introduce new products which are designed to compete more effectively in the market. There are also several other companies that claim to have products with greater capabilities than our products. Consolidation in this industry has begun, with one or more of these companies being acquired by large, established suppliers of network infrastructure products, and we believe it is likely to continue.
 
As a result, we expect to face increased competition in the future from larger companies with significantly more resources than we have. Although we believe that our technology and the purpose-built features of our products make them unique and will enable us to compete effectively with these companies, we cannot guarantee that we will be successful.
 
Environment
 
We are subject to regulations that have been adopted with respect to environmental matters, such as the Waste Electrical and Electronic Equipment (“WEEE”) and Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (“RoHS”) regulations adopted by the European Union. In addition, in September 2007, we announced our sponsorship and continued participation in the Carbon Disclosure Project (“CDP”). CDP is a global standardized mechanism by which companies report their greenhouse gas emissions to institutional investors; it hosts one of the largest registries of corporate greenhouse gas data in the world at www.cdproject.net. We continue to invest in the infrastructure and systems required to be able to inventory and


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measure our carbon footprint on a global basis. Since 2005, we have made significant strides in improving our energy efficiency around the world.
 
Compliance with federal, state, local, and foreign laws enacted for the protection of the environment has to date had no material effect on our capital expenditures, earnings, or competitive position.
 
In addition, we are committed to the environment by our effort in improving the energy efficiency of key elements of our high-performance network product offerings. For example, our T1600 router consumes substantially less energy than competitive products. The environment will remain a focus area across multiple aspects of our business.
 
Intellectual Property
 
Our success and ability to compete are substantially dependent upon our internally developed technology and know-how. Our operating systems were developed internally and are protected by United States and other copyright laws.
 
While we rely on patent, copyright, trade secret and trademark law to protect our technology, we also believe that factors such as the technological and creative skills of our personnel, new product developments, frequent product enhancements and reliable product maintenance are essential to establishing and maintaining a technology leadership position. There can be no assurance that others will not develop technologies that are similar or superior to our technology.
 
In addition, we integrate licensed third-party technology into certain of our products. From time to time, we may be required to license additional technology from third parties to develop new products or product enhancements. There can be no assurance that third-party licenses will be available or continue to be available to us on commercially reasonable terms. Our inability to maintain or re-license any third-party licenses required in our products or our inability to obtain third-party licenses necessary to develop new products and product enhancements could require us to obtain substitute technology of lower quality or performance standards or at a greater cost, any of which could harm our business, financial condition, and results of operations.
 
Our success will depend upon our ability to obtain necessary intellectual property rights and protect our intellectual property rights. We cannot be certain that patents will be issued on the patent applications that we have filed, or that we will be able to obtain the necessary intellectual property rights or that other parties will not contest our intellectual property rights.
 
Employees
 
As of December 31, 2007, we had 5,879 full-time employees. We have not experienced any work stoppages, and we consider our relations with our employees to be good. Competition for personnel in our industry is intense. We believe that our future success depends in part on our continued ability to hire, motivate and retain qualified personnel. We believe that we have been successful in recruiting qualified employees, but there is no assurance that we will continue to be successful in the future.
 
Our future performance depends in significant part upon the continued service of our key technical, sales and senior management personnel, none of whom is bound by an employment agreement requiring service for any defined period of time. The loss of the services of one or more of our key employees could have a material adverse effect on our business, financial condition and results of operations. Our future success also depends on our continuing ability to attract, train and retain highly qualified technical, sales and managerial personnel. Competition for such personnel is intense, and there can be no assurance that we can retain our key personnel in the future.


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Executive Officers of the Registrant
 
The following sets forth certain information regarding our executive officers as of February 1, 2008.
 
             
NAME
 
AGE
 
POSITION
 
Scott Kriens
    50     Chief Executive Officer and Chairman of the Board
Pradeep Sindhu
    55     Chief Technical Officer and Vice Chairman of the Board
Mark Bauhaus
    46     Executive Vice President and General Manager, Service Layer Technology Business Group
Robyn M. Denholm
    44     Executive Vice President and Chief Financial Officer
Mitchell Gaynor
    48     Vice President, General Counsel and Secretary
Edward Minshull
    49     Executive Vice President, Worldwide Field Operations
Kim Perdikou
    50     Executive Vice President and General Manager, Infrastructure Products Group
 
SCOTT KRIENS has served as Chief Executive Officer and Chairman of the board of directors of Juniper Networks since October 1996. From April 1986 to January 1996, Mr. Kriens served as Vice President of Sales and Vice President of Operations at StrataCom, Inc., a telecommunications equipment company, which he co-founded in 1986. Mr. Kriens received a B.A. in Economics from California State University, Hayward. Mr. Kriens also serves on the board of directors of Equinix, Inc. and Verisign, Inc.
 
PRADEEP SINDHU co-founded Juniper Networks in February 1996 and served as Chief Executive Officer and Chairman of the board of directors until September 1996. Since then, Dr. Sindhu has served as Vice Chairman of the board of directors and Chief Technical Officer of Juniper Networks. From September 1984 to February 1991, Dr. Sindhu worked as a Member of the Research Staff, and from March 1987 to February 1996, as the Principal Scientist, and from February 1994 to February 1996, as Distinguished Engineer at the Computer Science Lab, Xerox Corporation, Palo Alto Research Center, a technology research center. Dr. Sindhu holds a B.S.E.E. from the Indian Institute of Technology in Kanpur, an M.S.E.E. from the University of Hawaii and a Masters in Computer Science and Ph.D. in Computer Science from Carnegie-Mellon University.
 
MARK BAUHAUS joined Juniper Networks in September 2007 as Executive Vice President and General Manager, Service Layer Technology Business Group. From January 2007 to September 2007, Mr. Bauhaus served as founder and principal of Bauhaus Productions Consulting. From December 1986 to December 2006, Mr. Bauhaus served at Sun Microsystems in a range of executive level assignments, most recently in the position of senior vice president, Service Oriented Architecture Software. Mr. Bauhaus holds a Bachelors degree in business management and environmental systems analysis from the University of California at Davis.
 
ROBYN M. DENHOLM joined Juniper Networks in August 2007 as Executive Vice President and Chief Financial Officer. From January 1996 to August 2007, Ms. Denholm was at Sun Microsystems where she served in executive assignments that included senior vice president, Corporate Strategic Planning; senior vice president, Finance; vice president and corporate controller (Chief Accounting Officer); vice president, Finance; Service Division; director, Shared Financial Services APAC and Controller, Australia/New Zealand. From May 1989 to January 1996, Ms. Denholm served at Toyota Motor Corporation Australia and from December 1984 to May 1989 Ms. Denholm served at Arthur Andersen and Company in various finance assignments. Ms. Denholm is a Fellow of the Institute of Chartered Accountants of Australia and holds a Bachelors Degree in Economics from the University of Sydney and a Masters of Commerce from the University of New South Wales.
 
MITCHELL GAYNOR has been Vice President, General Counsel and Secretary of Juniper Networks, Inc. since February 2004. Between April 1999 and February 2004, Mr. Gaynor was Vice President, General Counsel and Secretary of Portal Software, Inc. He also served as Vice President, General Counsel and Secretary of Sybase, Inc., from 1997 to 1999 and served in various other legal roles in Sybase between 1993 and 1997. Mr. Gaynor was Assistant General Counsel of ComputerLand Corporation, a computer equipment reseller, during 1989 and 1990.


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From 1984 to 1989 and from 1990 to 1993, Mr. Gaynor was an associate with the law firm of Brobeck, Phleger & Harrison. Mr. Gaynor holds a J.D. from U.C. Hastings College of the Law and a B.A. from the University of California, Berkeley.
 
EDWARD MINSHULL joined Juniper Networks in August 2001 as Vice President, EMEA Sales and served in that role until January 2006 when he assumed the role of Executive Vice President, Worldwide Field Operations. From May 2000 to June 2001, Mr. Minshull was at Alcatel where he served as President of Alcatel Northern Europe and from May 1999 to May 2000 Mr. Minshull was at Newbridge Networks where he served as President of the Americas. Mr. Minshull holds a Bachelor of Arts degree in Business Studies from the University of North Staffordshire, England, U.K.
 
KIM PERDIKOU joined Juniper Networks in August 2000 as Chief Information Officer and served in that role until January 2006 when she assumed the role as the Executive Vice President and General Manager of the Infrastructure Products Group. Prior to Juniper Networks, Ms. Perdikou served as Chief Information Officer at Women.com from June 1999 to August 2000, and held the position of Vice President, Global Networks, at Reader’s Digest from March 1992 to April 1998, as well as leadership positions at Knight Ridder from June 1999 to August 2000, and Dun & Bradstreet from August 1989 to March 1992. Ms. Perdikou holds a B.S. in Computing Science with Operational Research from Paisley University, Paisley, Scotland, a Post-Graduate in Education degree from Jordanhill College, Glasgow, Scotland, and a Masters in Information Systems from Pace University, New York.
 
Available Information
 
We file our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 with the SEC electronically. The public may read or copy any materials we file with the SEC at the SEC’s Public Reference Room at 450 Fifth Street, NW, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains a website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The address of that site is http://www.sec.gov.
 
You may obtain a free copy of our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K and amendments to those reports on our website at http://www.juniper.net, by contacting the Investor Relations Department at our corporate offices by calling (888) 586-4737 or by sending an e-mail message to investor-relations@juniper.net. Such reports and other information are available on our website when they are available on the SEC website.
 
ITEM 1A.   Risk Factors
 
Factors That May Affect Future Results
 
Investments in equity securities of publicly traded companies involve significant risks. The market price of our stock reflects a higher multiple of expected future earnings than many other companies. Accordingly, even small changes in investor expectations for our future growth and earnings, whether as a result of actual or rumored financial or operating results, changes in the mix of the products and services sold, acquisitions, industry changes or other factors, could trigger, and have triggered, significant fluctuations in the market price of our common stock. Investors in our securities should carefully consider all of the relevant factors, including, but not limited to, the following factors, that could affect our stock price.
 
Our quarterly results are inherently unpredictable and subject to substantial fluctuations and, as a result, we may fail to meet the expectations of securities analysts and investors, which could adversely affect the trading price of our common stock.
 
Our revenues and operating results may vary significantly from quarter to quarter due to a number of factors, many of which are outside of our control and any of which may cause our stock price to fluctuate.
 
The factors that may affect the unpredictability of our quarterly results include, but are not limited to, limited visibility into customer spending plans, changes in the mix of products sold, changing market conditions, including current and potential customer consolidation, competition, customer concentration, long sales and implementation


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cycles, regional economic and political conditions and seasonality. For example, many companies in our industry experience adverse seasonal fluctuations in customer spending patterns, particularly in the first and third quarters.
 
As a result, we believe that quarter-to-quarter comparisons of operating results are not necessarily a good indication of what our future performance will be. It is likely that in some future quarters, our operating results may be below the expectations of securities analysts or investors, in which case the price of our common stock may decline. Such a decline could occur, and has occurred in the past, even when we have met our publicly stated revenue and/or earnings guidance.
 
Fluctuating economic conditions make it difficult to predict revenues for a particular period and a shortfall in revenues may harm our operating results.
 
Our revenues depend significantly on general economic conditions and the demand for products in the markets in which we compete. Economic weakness, customer financial difficulties and constrained spending on network expansion have previously resulted (for example, in 2001 and 2002), and may in the future result, in decreased revenues and earnings and could negatively impact our ability to forecast and manage our contract manufacturer relationships. Economic downturns may also lead to restructuring initiatives and associated expenses and impairment of investments. In addition, our operating expenses are largely based on anticipated revenue trends and a high percentage of our expenses are, and will continue to be, fixed in the short-term. Uncertainty about future economic conditions makes it difficult to forecast operating results and to make decisions about future investments. Future economic weakness, customer financial difficulties and reductions in spending on network expansion could have a material adverse effect on demand for our products and consequently on our results of operations and stock price.
 
Telecommunications companies and other large companies generally require more onerous terms and conditions of their vendors. As we seek to sell more products to such customers, we may be required to agree to terms and conditions that may have an adverse effect on our business or ability to recognize revenues.
 
Telecommunications service provider companies and other large companies, because of their size, generally have had greater purchasing power and, accordingly, have requested and received more favorable terms, which often translate into more onerous terms and conditions for their vendors. As we seek to sell more products to this class of customer, we may be required to agree to such terms and conditions, which may include terms that affect the timing of our ability to recognize revenue and have an adverse effect on our business and financial condition. Consolidation among such large customers can further increase their buying power and ability to require onerous terms.
 
For example, many customers in this class have purchased products from other vendors who promised certain functionality and failed to deliver such functionality and/or had products that caused problems and outages in the networks of these customers. As a result, this class of customers may request additional features from us and require substantial penalties for failure to deliver such features or may require substantial penalties for any network outages that may be caused by our products. These additional requests and penalties, if we are required to agree to them, may affect our ability to recognize the revenues from such sales, which may negatively affect our business and our financial condition. For example, in April 2006, we announced that we would be required to defer a large amount of revenue from a customer due to the contractual obligations required by that customer.
 
For arrangements with multiple elements, vendor specific objective evidence of fair value of the undelivered element is required in order to separate the components and to account for elements of the arrangement separately. Vendor specific objective evidence of fair value is based on the price charged when the element is sold separately. However, customers may require terms and conditions that make it more difficult or impossible for us to maintain vendor specific objective evidence of fair value for the undelivered elements to a similar group of customers, the result of which could cause us to defer the entire arrangement fees for a similar group of customers (product, maintenance, professional services, etc.) and recognize revenue only when the last element is delivered or if the only undelivered element is maintenance revenue would be recognized ratably over the contractual maintenance period which is generally one year but could be substantially longer.


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If we do not successfully anticipate market needs and develop products and product enhancements that meet those needs, or if those products do not gain market acceptance, we may not be able to compete effectively and our ability to generate revenues will suffer.
 
We cannot guarantee that we will be able to anticipate future market needs or be able to develop new products or product enhancements to meet such needs or to meet them in a timely manner. If we fail to anticipate market requirements or to develop new products or product enhancements to meet those needs, such failure could substantially decrease market acceptance and sales of our present and future products, which would significantly harm our business and financial results. Even if we are able to anticipate, develop and commercially introduce new products and enhancements, there can be no assurance that new products or enhancements will achieve widespread market acceptance. For example, in the first quarter of 2008 we announced new products designed to address the Ethernet switch market, a market in which we have not had a historical presence. If these new products do not gain market acceptance at a sufficient rate of growth, or at all, our ability to meet future financial targets may be adversely affected. Any failure of our products to achieve market acceptance could adversely affect our business and financial results.
 
We expect gross margin to vary over time and our recent level of product gross margin may not be sustainable.
 
Our product gross margins will vary from quarter to quarter and the recent level of gross margins may not be sustainable and may be adversely affected in the future by numerous factors, including product mix shifts, increased price competition in one or more of the markets in which we compete, increases in material or labor costs, excess product component or obsolescence charges from our contract manufacturers, increased costs due to changes in component pricing or charges incurred due to component holding periods if our forecasts do not accurately anticipate product demand, warranty related issues, or our introduction of new products or entry into new markets with different pricing and cost structures.
 
We rely on value-added resellers and distribution partners to sell our products, and disruptions to, or our failure to effectively develop and manage, our distribution channel and the processes and procedures that support it could adversely affect our ability to generate revenues from the sale of our products.
 
Our future success is highly dependent upon establishing and maintaining successful relationships with a variety of value-added reseller and distribution partners. The majority of our revenues are derived through value-added resellers and distributors, most of which also sell competitors’ products or their own competitive products. Our revenues depend in part on the performance of these partners. The loss of or reduction in sales to our value-added resellers or distributors could materially reduce our revenues. During 2006, Alcatel, a value-added reseller and a competitor of ours, acquired Lucent, one of our largest value-added resellers. In addition, in April 2007 our largest customer, Siemens, transferred its telecommunications business to Nokia-Siemens Networks, a joint venture between Siemens and Nokia. Our competitors may in some cases be effective in providing incentives to current or potential resellers and distributors to favor their products or to prevent or reduce sales of our products. If we fail to maintain relationships with our partners, fail to develop new relationships with value-added resellers and distributors in new markets or expand the number of distributors and resellers in existing markets, fail to manage, train or motivate existing value-added resellers and distributors effectively or if these partners are not successful in their sales efforts, sales of our products may decrease and our operating results would suffer.
 
In addition, we recognize a portion of our revenue based on a sell-through model using information provided by our distributors. If those distributors provide us with inaccurate or untimely information, the amount or timing of our revenues could be adversely impacted.
 
Further, in order to develop and expand our distribution channel, we must continue to scale and improve our processes and procedures that support it, and those processes and procedures may become increasingly complex and inherently difficult to manage. Our failure to successfully manage and develop our distribution channel and the processes and procedures that support it could adversely affect our ability to generate revenues from the sale of our products.


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If we fail to accurately predict our manufacturing requirements, we could incur additional costs or experience manufacturing delays which would harm our business.
 
We provide demand forecasts to our contract manufacturers. If we overestimate our requirements, the contract manufacturers may assess charges or we may have liabilities for excess inventory, each of which could negatively affect our gross margins. Conversely, because lead times for required materials and components vary significantly and depend on factors such as the specific supplier, contract terms and the demand for each component at a given time, if we underestimate our requirements, the contract manufacturers may have inadequate time or materials and components required to produce our products, which could increase costs or could delay or interrupt manufacturing of our products and result in delays in shipments and deferral or loss of revenues.
 
Our ability to process orders and ship products in a timely manner is dependent in part on our business systems and performance of the systems and processes of third parties such as our contract manufacturers, suppliers or other partners, as well as interfaces with the systems of such third parties. If our systems, the systems and processes of those third parties or the interfaces between them experience delays or fail, our business processes and our ability to build and ship products could be impacted, and our financial results could be harmed.
 
Some of our business processes depend upon our information technology systems, the systems and processes of third parties and on interfaces with the systems of third parties. For example, our order entry system feeds information into the systems of our contract manufacturers, which enables them to build and ship our products. If those systems fail or are interrupted, our processes may function at a diminished level or not at all. This could negatively impact our ability to ship products or otherwise operate our business, and our financial results could be harmed. For example, although it did not adversely affect our shipments, an earthquake in late December of 2006 disrupted communications with China, where a significant part of our manufacturing occurs.
 
We also rely upon the performance of the systems and processes of our contract manufacturers to build and ship our products. If those systems and processes experience interruption or delay, our ability to build and ship our products in a timely manner may be harmed. For example, as we have expanded our contract manufacturing base to China, we have experienced instances where our contract manufacturer was not able to ship products in the time periods expected by us. If we are not able to ship our products or if product shipments are delayed, our ability to recognize revenue in a timely manner for those products would be affected and our financial results could be harmed.
 
We are dependent on sole source and limited source suppliers for several key components, which makes us susceptible to shortages or price fluctuations in our supply chain and we may face increased challenges in supply chain management in the future.
 
With the current demand for electronic products, component shortages are possible and the predictability of the availability of such components may be limited. Growth in our business and the economy is likely to create greater pressures on us and our suppliers to accurately project overall component demand and to establish optimal component levels. If shortages or delays persist, the price of these components may increase, or the components may not be available at all. We may not be able to secure enough components at reasonable prices or of acceptable quality to build new products in a timely manner and our revenues and gross margins could suffer until other sources can be developed. For example, throughout the first quarter of 2006 we experienced component shortages that resulted in delays of shipments of product until late in the quarter and in an increase in our day sales outstanding. We currently purchase numerous key components, including ASICs, from single or limited sources. The development of alternate sources for those components is time consuming, difficult and costly. In addition, the lead times associated with certain components are lengthy and preclude rapid changes in quantities and delivery schedules. In the event of a component shortage or supply interruption from these suppliers, we may not be able to develop alternate or second sources in a timely manner. If, as a result, we are unable to buy these components in quantities sufficient to meet our requirements on a timely basis, we will not be able to deliver product to our customers, which would seriously impact present and future sales, which would, in turn, adversely affect our business.


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In addition, the development, licensing or acquisition of new products in the future may increase the complexity of supply chain management. Failure to effectively manage the supply of key components and products would adversely affect our business.
 
We are dependent on contract manufacturers with whom we do not have long-term supply contracts, and changes to those relationships, expected or unexpected, may result in delays or disruptions that could cause us to lose revenue and damage our customer relationships.
 
We depend on independent contract manufacturers (each of which is a third-party manufacturer for numerous companies) to manufacture our products. Although we have contracts with our contract manufacturers, those contracts do not require them to manufacture our products on a long-term basis in any specific quantity or at any specific price. In addition, it is time consuming and costly to qualify and implement additional contract manufacturer relationships. Therefore, if we should fail to effectively manage our contract manufacturer relationships or if one or more of them should experience delays, disruptions or quality control problems in our manufacturing operations, or if we had to change or add additional contract manufacturers or contract manufacturing sites, our ability to ship products to our customers could be delayed. Also, the addition of manufacturing locations or contract manufacturers would increase the complexity of our supply chain management. Moreover, an increasing portion of our manufacturing is performed in China and other countries and is therefore subject to risks associated with doing business in other countries. Each of these factors could adversely affect our business and financial results.
 
We face intense competition that could reduce our revenues and adversely affect our financial results.
 
Competition is intense in the markets that we address. The IP infrastructure market has historically been dominated by Cisco with other companies such as Alcatel-Lucent, Ericsson, Extreme Networks, Foundry Networks, Huawei, and Nortel providing products to a smaller segment of the market. In addition, a number of other small public and private companies have products or have announced plans for new products to address the same challenges and market segments that our products address.
 
In the service layer technologies market, we face intense competition from a broader group of companies including appliance vendors such as Cisco, Fortinet, F5 Networks, Nortel and Riverbed, and software vendors such as CheckPoint. In addition, a number of other small public and private companies have products or have announced plans for new products to address the same challenges that our products address.
 
In addition, actual or speculated consolidation among competitors, or the acquisition of our partners and resellers by competitors, can increase the competitive pressures faced by us. In this regard, Alcatel combined with Lucent in 2006 and Ericsson acquired Redback in 2007. A number of our competitors have substantially greater resources and can offer a wider range of products and services for the overall network equipment market than we do. If we are unable to compete successfully against existing and future competitors on the basis of product offerings or price, we could experience a loss in market share and revenues and/or be required to reduce prices, which could reduce our gross margins, and which could materially and adversely affect our business, operating results and financial condition.
 
A limited number of our customers comprise a significant portion of our revenues and increases the degree of customer concentration risk, and any decrease in revenue from these customers could have an adverse effect on our net revenues and operating results.
 
A substantial majority of our net revenues depend on sales to a limited number of customers and distribution partners. Nokia-Siemens Networks B.V. (“NSN”) and its predecessor companies contributed more than 10% of revenue in the fiscal years ended 2007, 2006 and 2005. This customer concentration increases the risk of quarterly fluctuations in our revenues and operating results. Any downturn in the business of our key customers or potential new customers could significantly decrease sales to such customers, which could adversely affect our net revenues and results of operations. In addition, there has been and continues to be consolidation in the telecommunications industry (for example, the acquisitions of AT&T Inc., MCI, Inc. and BellSouth Corporation) and consolidation among the large vendors of telecommunications equipment and services (for example, the combination of Alcatel and Lucent, the joint venture of Nokia-Siemens Networks and the acquisition of Redback by Ericsson). Such


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consolidation may cause our customers who are involved in these acquisitions to suspend or indefinitely reduce their purchases of our products or have other unforeseen consequences that could harm our business and operating results.
 
We are a party to lawsuits, which are costly to investigate and defend and, if determined adversely to us, could require us to pay damages or prevent us from taking certain actions, any or all of which could harm our business and financial condition.
 
We and certain of our current and former officers and current and former members of our board of directors are subject to various lawsuits. For example, we have been served with lawsuits related to the alleged backdating of stock options and other related matters, a description of which can be found in Note 8 of Notes to Consolidated Financial Statements, under the heading “Legal Proceedings.” There can be no assurance that these or any actions that have been or may be brought against us will be resolved in our favor. Regardless of whether they are resolved in our favor, these lawsuits are, and any future lawsuits to which we may become a party will likely be, expensive and time consuming to investigate, defend and/or resolve. Such costs of investigation and defense, as well as any losses resulting from these claims, could significantly increase our expenses and adversely affect our profitability and cash flow.
 
In addition, we are party to a lawsuit which seeks to enjoin us from granting equity awards under our 2006 Equity Incentive Plan (the “2006 Plan”), as well as to invalidate all awards granted under such plan to date. The 2006 Plan is the only active plan under which we currently grant stock options and restricted stock units to our employees. If this lawsuit is resolved against us, we may be prevented from using the 2006 Plan to provide these equity awards to recruit new employees or to compensate existing employees, which would put us at a significant disadvantage to other companies that compete for workers in high technology industries such as ours. Accordingly, our ability to hire, retain and motivate current and prospective employees would be harmed, the result of which could negatively impact our business operations.
 
We are currently implementing upgrades to key internal IT systems, and problems with the design or implementation of these systems could interfere with our business and operations.
 
We have initiated a project to upgrade certain key internal IT systems, including our company-wide human resources management system and our enterprise resource planning (“ERP”) system. We have invested, and will continue to invest, significant capital and human resources in the design and implementation of these systems, which may be disruptive to our underlying business. Any disruptions or delays in the design and implementation of the new systems, particularly any disruptions or delays that impact our operations, could adversely affect our ability to process customer orders, ship products, provide services and support to our customers, bill and track our customers, fulfill contractual obligations, file SEC reports in a timely manner and otherwise run our business. Even if we do not encounter these adverse effects, the design and implementation of these new systems may be much more costly than we anticipated. If we are unable to successfully design and implement these new systems as planned, our financial position, results of operations and cash flows could be negatively impacted.
 
Litigation or claims regarding intellectual property rights may be time consuming, expensive and require a significant amount of resources to prosecute, defend or make our products non-infringing.
 
Third parties have asserted and may in the future assert claims or initiate litigation related to patent, copyright, trademark and other intellectual property rights to technologies and related standards that are relevant to our products. The asserted claims and/or initiated litigation may include claims against us or our manufacturers, suppliers or customers, alleging infringement of their proprietary rights with respect to our products. Regardless of the merit of these claims, they have been and can be time-consuming, result in costly litigation and may require us to develop non-infringing technologies or enter into license agreements. Furthermore, because of the potential for high awards of damages or injunctive relief that are not necessarily predictable, even arguably unmeritorious claims may be settled for significant amounts of money. If any infringement or other intellectual property claim made against us by any third-party is successful, if we are required to settle litigation for significant amounts of money, or if we fail to develop non-infringing technology or license required proprietary rights on commercially reasonable terms and conditions, our business, operating results and financial condition could be materially and adversely affected.


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We are exposed to fluctuations in currency exchange rates which could negatively affect our financial results and cash flows.
 
Because a majority of our business is conducted outside the United States, we are exposed to fluctuations in foreign currency exchange rates. These fluctuations could have a material adverse impact on our financial results and cash flows.
 
Our sales and costs of revenues are primarily denominated in U.S. dollars. Our operating expenses are denominated in U.S. dollars as well as other foreign currencies including the British Pound, the Euro, Indian Rupee, and Japanese Yen, related to our operations outside of the United States. An increase in the value of the U.S. dollar could increase the real cost to our customers of our products in those markets outside the United States where we sell in U.S. dollars, and a weakened dollar could increase the cost of local operating expenses and procurement of raw materials to the extent we must purchase components in foreign currencies. A decrease in the value of the U.S. dollar could also increase the real cost to us of our expenses in countries outside the United States.
 
Currently, we hedge only those currency exposures associated with certain assets and liabilities denominated in nonfunctional currencies and periodically will hedge anticipated foreign currency operating expenses. The hedging activities undertaken by us are intended to partially offset the impact of currency fluctuations. If our attempts to hedge against these risks are not successful, our net income could be adversely impacted.
 
We are required to expense equity compensation given to our employees, which has reduced our reported earnings, will significantly harm our operating results in future periods and may reduce our stock price and our ability to effectively utilize equity compensation to attract and retain employees.
 
We historically have used stock options and other equity awards as a significant component of our employee compensation program in order to align employees’ interests with the interests of our stockholders, encourage employee retention, and provide competitive compensation packages. The Financial Accounting Standards Board has adopted changes that require companies to record a charge to earnings for employee stock option grants and other equity incentives. We adopted this standard effective January 1, 2006. By causing us to record significantly increased compensation costs, such accounting changes have reduced, and will continue to reduce, our reported earnings and will significantly harm our operating results in future periods. These factors may require us to reduce the availability and amount of equity incentives provided to employees, which may make it more difficult for us to attract, retain and motivate key personnel. Moreover, if securities analysts, institutional investors and other investors adopt financial models that include stock option expense in their primary analysis of our financial results, our stock price could decline as a result of reliance on these models with higher expense calculations. Each of these results could materially and adversely affect our business.
 
Matters related to the investigation into our historical stock option granting practices and the restatement of our financial statements may result in additional litigation, regulatory proceedings and government enforcement actions.
 
Our historical stock option granting practices and the restatement of our financial statements have exposed us to greater risks associated with litigation, regulatory proceedings and government enforcement actions. For more information regarding our current litigation and related inquiries, please see Note 8 of Notes to Consolidated Financial Statements under the heading “Legal Proceedings” as well as the other risk factors related to litigation set forth in this section. We have provided the results of our internal review and independent investigation to the Securities and Exchange Commission (“SEC”) and the United States Attorney’s Office for the Northern District of California, and in that regard we have responded to formal and informal requests for documents and additional information. In August 2007, we announced that we entered into a settlement agreement with the SEC in connection with our historical stock option granting practices in which we consented to a permanent injunction against any future violations of the antifraud, reporting, books-and-records and internal control provisions of the federal securities laws. This settlement concludes the SEC’s formal investigation of the Company with respect to this matter. No assurance can be given regarding the outcomes from the current litigation or other possible actions relating to our past stock option practices. The resolution of these matters will be time consuming, expensive, and may distract management from the conduct of our business. Furthermore, if we are subject to adverse findings in


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litigation, we could be required to pay damages or penalties or have other remedies imposed, which could harm our business, financial condition, results of operations and cash flows.
 
In addition, while we believe that we have made appropriate judgments in determining the correct measurement dates for our stock option grants, the SEC may disagree with the manner in which we accounted for and reported, or did not report, the corresponding financial impact. Accordingly, there is a risk that we may have to further restate our prior financial statements, amend prior filings with the SEC, or take other actions not currently contemplated.
 
If we fail to adequately evolve our financial and managerial control and reporting systems and processes, our ability to manage and grow our business will be negatively affected.
 
Our ability to successfully offer our products and implement our business plan in a rapidly evolving market depends upon an effective planning and management process. We will need to continue to improve our financial and managerial control and our reporting systems and procedures in order to manage our business effectively in the future. If we fail to continue to implement improved systems and processes, our ability to manage our business and results of operations may be negatively affected.
 
Our success depends upon our ability to effectively plan and manage our resources and restructure our business through rapidly fluctuating economic and market conditions.
 
Our ability to successfully offer our products and services in a rapidly evolving market requires an effective planning, forecasting, and management process to enable us to effectively scale our business and adjust our business in response to fluctuating market opportunities and conditions. In periods of market expansion, we have increased investment in our business by, for example, increasing headcount and increasing our investment in research and development and other parts of our business. Conversely, during 2001 and 2002, in response to downward trending industry and market conditions, we restructured our business and reduced our workforce. Many of our expenses, such as real estate expenses, cannot be rapidly or easily adjusted as a result of fluctuations in our business or numbers of employees. Moreover, rapid changes in the size of our workforce could adversely affect the ability to develop and deliver products and services as planned or impair our ability to realize our current or future business objectives.
 
Our ability to develop, market and sell products could be harmed if we are unable to retain or hire key personnel.
 
Our future success depends upon our ability to recruit and retain the services of executive, engineering, sales, marketing and support personnel. The supply of highly qualified individuals, in particular engineers in very specialized technical areas, or sales people specializing in the service provider and enterprise markets, is limited and competition for such individuals is intense. None of our officers or key employees is bound by an employment agreement for any specific term. The loss of the services of any of our key employees, the inability to attract or retain personnel in the future or delays in hiring required personnel, particularly engineers and sales people, and the complexity and time involved in replacing or training new employees, could delay the development and introduction of new products, and negatively impact our ability to market, sell or support our products.
 
We sell our products to customers that use those products to build networks and IP infrastructure and, if the demand for network and IP systems does not continue to grow, then our business, operating results and financial condition could be adversely affected.
 
A substantial portion of our business and revenue depends on the growth of secure IP infrastructure and on the deployment of our products by customers that depend on the continued growth of IP services. As a result of changes in the economy and capital spending or the building of network capacity in excess of demand, all of which have in the past particularly affected telecommunications service providers, spending on IP infrastructure can vary, which could have a material adverse effect on our business and financial results. In addition, a number of our existing customers are evaluating the build out of their next generation network, or NGN. During the decision making period when the customers are determining the design of those networks and the selection of the equipment they will use in


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those networks, such customers may greatly reduce or suspend their spending on secure IP infrastructure. Such pauses in purchases can make it more difficult to predict revenues from such customers, can cause fluctuations in the level of spending by these customers and, even where our products are ultimately selected, can have a material adverse effect on our business and financial results.
 
The long sales and implementation cycles for our products, as well as our expectation that some customers will sporadically place large orders with short lead times, may cause our revenues and operating results to vary significantly from quarter to quarter.
 
A customer’s decision to purchase certain of our products involves a significant commitment of its resources and a lengthy evaluation and product qualification process. As a result, the sales cycle may be lengthy. In particular, customers making critical decisions regarding the design and implementation of large or next-generation networks may engage in very lengthy procurement processes that may delay or impact expected future orders. Throughout the sales cycle, we may spend considerable time educating and providing information to prospective customers regarding the use and benefits of our products. Even after making the decision to purchase, customers may deploy our products slowly and deliberately. Timing of deployment can vary widely and depends on the skill set of the customer, the size of the network deployment, the complexity of the customer’s network environment and the degree of hardware and operating system configuration necessary to deploy the products. Customers with large networks usually expand their networks in large increments on a periodic basis. Accordingly, we may receive purchase orders for significant dollar amounts on an irregular basis. These long cycles, as well as our expectation that customers will tend to sporadically place large orders with short lead times, may cause revenues and operating results to vary significantly and unexpectedly from quarter to quarter.
 
Integration of past acquisitions and future acquisitions could disrupt our business and harm our financial condition and stock price and may dilute the ownership of our stockholders.
 
We have made, and may continue to make, acquisitions in order to enhance our business. In 2005 we completed the acquisitions of five private companies. Acquisitions involve numerous risks, including problems combining the purchased operations, technologies or products, unanticipated costs, diversion of management’s attention from our core businesses, adverse effects on existing business relationships with suppliers and customers, risks associated with entering markets in which we have no or limited prior experience and potential loss of key employees. There can be no assurance that we will be able to successfully integrate any businesses, products, technologies or personnel that we might acquire. The integration of businesses that we have acquired has been, and will continue to be, a complex, time consuming and expensive process. Acquisitions may also require us to issue common stock that dilutes the ownership of our current stockholders, assume liabilities, record goodwill and non-amortizable intangible assets that will be subject to impairment testing on a regular basis and potential periodic impairment charges, incur amortization expenses related to certain intangible assets, and incur large and immediate write-offs and restructuring and other related expenses, all of which could harm our operating results and financial condition.
 
In addition, if we fail in our integration efforts with respect to our acquisitions and are unable to efficiently operate as a combined organization utilizing common information and communication systems, operating procedures, financial controls and human resources practices, our business and financial condition may be adversely affected.
 
Our products are highly technical and if they contain undetected errors, our business could be adversely affected and we might have to defend lawsuits or pay damages in connection with any alleged or actual failure of our products and services.
 
Our products are highly technical and complex, are critical to the operation of many networks and, in the case of our security products, provide and monitor network security and may protect valuable information. Our products have contained and may contain one or more undetected errors, defects or security vulnerabilities. Some errors in our products may only be discovered after a product has been installed and used by end customers. Any errors or security vulnerabilities discovered in our products after commercial release could result in loss of revenues or delay in revenue recognition, loss of customers and increased service and warranty cost, any of which could adversely


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affect our business and results of operations. In addition, we could face claims for product liability, tort or breach of warranty. Defending a lawsuit, regardless of its merit, is costly and may divert management’s attention. In addition, if our business liability insurance coverage is inadequate or future coverage is unavailable on acceptable terms or at all, our financial condition could be harmed.
 
A breach of network security could harm public perception of our security products, which could cause us to lose revenues.
 
If an actual or perceived breach of network security occurs in the network of a customer of our security products, regardless of whether the breach is attributable to our products, the market perception of the effectiveness of our products could be harmed. This could cause us to lose current and potential end customers or cause us to lose current and potential value-added resellers and distributors. Because the techniques used by computer hackers to access or sabotage networks change frequently and generally are not recognized until launched against a target, we may be unable to anticipate these techniques.
 
If our products do not interoperate with our customers’ networks, installations will be delayed or cancelled and could harm our business.
 
Our products are designed to interface with our customers’ existing networks, each of which have different specifications and utilize multiple protocol standards and products from other vendors. Many of our customers’ networks contain multiple generations of products that have been added over time as these networks have grown and evolved. Our products will be required to interoperate with many or all of the products within these networks as well as future products in order to meet our customers’ requirements. If we find errors in the existing software or defects in the hardware used in our customers’ networks, we may have to modify our software or hardware to fix or overcome these errors so that our products will interoperate and scale with the existing software and hardware, which could be costly and negatively impact our operating results. In addition, if our products do not interoperate with those of our customers’ networks, demand for our products could be adversely affected or orders for our products could be cancelled. This could hurt our operating results, damage our reputation and seriously harm our business and prospects.
 
Governmental regulations affecting the import or export of products could negatively affect our revenues.
 
The United States and various other governments have imposed controls, export license requirements and restrictions on the import or export of some technologies, especially encryption technology. In addition, from time to time, governmental agencies have proposed additional regulation of encryption technology, such as requiring the escrow and governmental recovery of private encryption keys. Governmental regulation of encryption technology and regulation of imports or exports, or our failure to obtain required import or export approval for our products, could harm our international and domestic sales and adversely affect our revenues.
 
Due to the global nature of our operations, economic or social conditions or changes in a particular country or region could adversely affect our sales or increase our costs and expenses, which could have a material adverse impact on our financial condition.
 
We conduct significant sales and customer support operations directly and indirectly through our distributors and value-added resellers in countries throughout the world and also depend on the operations of our contract manufacturers and suppliers that are located inside and outside of the United States. In addition, our research and development operations are conducted in the United States as well as other countries. Our future results could be materially adversely affected by a variety of uncontrollable and changing factors including, among others, political or social unrest, natural disasters, epidemic disease, war, or economic instability in a specific country or region, trade protection measures and other regulatory requirements which may affect our ability to import or export our products from various countries, service provider and government spending patterns affected by political considerations and difficulties in staffing and managing international operations. Any or all of these factors could have a material adverse impact on our revenue, costs, expenses, results of operations and financial condition.


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Our products incorporate and rely upon licensed third-party technology and if licenses of third-party technology do not continue to be available to us or become very expensive, our revenues and ability to develop and introduce new products could be adversely affected.
 
We integrate licensed third-party technology into certain of our products. From time to time, we may be required to license additional technology from third parties to develop new products or product enhancements. Third-party licenses may not be available or continue to be available to us on commercially reasonable terms. Our inability to maintain or re-license any third-party licenses required in our products or our inability to obtain third-party licenses necessary to develop new products and product enhancements, could require us to obtain substitute technology of lower quality or performance standards or at a greater cost, any of which could harm our business, financial condition and results of operations.
 
We are subject to risks arising from our international operations.
 
We derive a majority of our revenues from our international operations, and we plan to continue expanding our business in international markets in the future. As a result of our international operations, we are affected by economic, regulatory and political conditions in foreign countries, including changes in IT spending generally, the imposition of government controls, changes or limitations in trade protection laws, unfavorable changes in tax treaties or laws, natural disasters, labor unrest, earnings expatriation restrictions, misappropriation of intellectual property, acts of terrorism and continued unrest in many regions and other factors, which could have a material impact on our international revenues and operations. In particular, in some countries we may experience reduced intellectual property protection. Moreover, local laws and customs in many countries differ significantly from those in the United States. In many foreign countries, particularly in those with developing economies, it is common for others to engage in business practices that are prohibited by our internal policies and procedures or United States regulations applicable to us. Although we implement policies and procedures designed to ensure compliance with these laws and policies, there can be no assurance that all of our employees, contractors and agents will not take actions in violations of them. Violations of laws or key control policies by our employees, contractors or agents could result in financial reporting problems, fines, penalties, or prohibition on the importation or exportation of our products and could have a material adverse effect on our business.
 
While we believe that we currently have adequate internal control over financial reporting, we are exposed to risks from legislation requiring companies to evaluate those internal controls.
 
Section 404 of the Sarbanes-Oxley Act of 2002 requires our management to report on, and our independent auditors to attest to, the effectiveness of our internal control over financial reporting. We have an ongoing program to perform the system and process evaluation and testing necessary to comply with these requirements. We have and will continue to incur significant expenses and devote management resources to Section 404 compliance on an ongoing basis. In the event that our chief executive officer, chief financial officer or independent registered public accounting firm determine in the future that our internal controls over financial reporting are not effective as defined under Section 404, investor perceptions may be adversely affected and could cause a decline in the market price of our stock.
 
Regulation of the telecommunications industry could harm our operating results and future prospects.
 
The telecommunications industry is highly regulated and our business and financial condition could be adversely affected by changes in the regulations relating to the telecommunications industry. Currently, there are few laws or regulations that apply directly to access to or commerce on IP networks. We could be adversely affected by regulation of IP networks and commerce in any country where we operate. Such regulations could address matters such as voice over the Internet or using Internet Protocol, encryption technology, and access charges for service providers. In addition, regulations have been adopted with respect to environmental matters, such as the Waste Electrical and Electronic Equipment (“WEEE”) and Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (“RoHS”) regulations adopted by the European Union, as well as regulations prohibiting government entities from purchasing security products that do not meet specified local certification criteria. Compliance with such regulations may be costly and time-consuming for us and our suppliers and partners. The adoption and implementation of such regulations could decrease demand for our products, and at


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the same time could increase the cost of building and selling our products as well as impact our ability to ship products into affected areas and recognize revenue in a timely manner, which could have a material adverse effect on our business, operating results and financial condition.
 
Our reported financial results could suffer if there is an additional impairment of goodwill or other intangible assets with indefinite lives.
 
We are required to annually test, and review on an interim basis, our goodwill and intangible assets with indefinite lives, including the goodwill associated with past acquisitions and any future acquisitions, to determine if impairment has occurred. If such assets are deemed impaired, an impairment loss equal to the amount by which the carrying amount exceeds the fair value of the assets would be recognized. This would result in incremental expenses for that quarter which would reduce any earnings or increase any loss for the period in which the impairment was determined to have occurred. For example, such impairment could occur if the market value of our common stock falls below certain levels for a sustained period or if the portions of our business related to companies we have acquired fail to grow at expected rates or decline. In the second quarter of 2006, this impairment evaluation resulted in a reduction of $1,280.0 million to the carrying value of goodwill on our balance sheet for the SLT segment, primarily due to the decline in our market capitalization that occurred over a period of approximately nine months prior to the impairment review and, to a lesser extent, a decrease in the forecasted future cash flows used in the income approach. Declines in our stock prices in the future as well as any marked decline in our level of revenues or gross margins increase the risk that goodwill and intangible assets may become impaired in future periods. We cannot accurately predict the amount and timing of any impairment of assets.
 
Changes in effective tax rates or adverse outcomes resulting from examination of our income or other tax returns could adversely affect our results.
 
Our future effective tax rates could be subject to volatility or adversely affected by earnings being lower than anticipated in countries where we have lower statutory rates and higher than anticipated earnings in countries where we have higher statutory rates; by changes in the valuation of our deferred tax assets and liabilities; by expiration of or lapses in the R&D tax credit laws; by transfer pricing adjustments related to certain acquisitions including the license of acquired intangibles under our intercompany R&D cost sharing arrangement; by tax effects of stock-based compensation; by costs related to intercompany restructurings; or by changes in tax laws, regulations, accounting principles, or interpretations thereof. In addition, we are subject to the continuous examination of our income tax returns by the Internal Revenue Service and other tax authorities. We regularly assess the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. There can be no assurance that the outcomes from these continuous examinations will not have an adverse effect on our operating results and financial condition.
 
The investment of our cash balance and our investments in government and corporate debt securities are subject to risks which may cause losses and affect the liquidity of these investments.
 
At December 31, 2007, we had $1,716.1 million in cash and cash equivalents and $291.1 million in investments in government and corporate debt securities. We have invested these amounts in U.S. government securities, corporate notes and bonds, commercial paper, and money market funds meeting certain criteria. Certain of these investments are subject to general credit, liquidity, market and interest rate risks, which may be exacerbated by U.S. sub-prime mortgage defaults that have affected various sectors of the financial markets and caused credit and liquidity issues. These market risks associated with our investment portfolio may have a negative adverse effect on our results of operations, liquidity and financial condition.
 
Uninsured losses could harm our operating results.
 
We self-insure against many business risks and expenses, such as intellectual property litigation and our medical benefit programs, where we believe we can adequately self-insure against the anticipated exposure and risk or where insurance is either not deemed cost-effective or is not available. We also maintain a program of insurance coverage for various types of property, casualty, and other risks. We place our insurance coverage with various carriers in numerous jurisdictions. The types and amounts of insurance that we obtain vary from time to time and


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from location to location, depending on availability, cost, and our decisions with respect to risk retention. The policies are subject to deductibles, policy limits and exclusions that result in our retention of a level of risk on a self-insurance basis. Losses not covered by insurance could be substantial and unpredictable and could adversely affect our results of operations.
 
ITEM 1B.   Unresolved Staff Comments
 
None.
 
ITEM 2.   Properties
 
We lease approximately 1.8 million square feet worldwide, with nearly 70 percent being in North America. Our corporate headquarters is located in Sunnyvale, California and consists of seven buildings totaling approximately 0.9 million square feet. Each building is subject to an individual lease or sublease, which provides various option, expansion and extension provisions. The corporate headquarters leases expire between January 2011 and December 2014. We also own approximately 80 acres of land adjacent to our leased corporate headquarters location. Additionally, we lease an approximately 0.2 million square foot facility in Westford, Massachusetts. The leases expire between January and March 2011.
 
In addition to our offices in Sunnyvale and Westford, we also lease offices in various locations throughout the United States, Canada, South America, Europe, the Middle East, Africa, and the Asia Pacific region, including offices in Australia, China, Hong Kong, India, Ireland, Israel, Japan, the Netherlands, Russia, United Arab Emirates, and the United Kingdom. Our longest lease expires in October 2016. Our current offices are in good condition and appropriately support our business needs.
 
ITEM 3.   Legal Proceedings
 
The information set forth under “Legal Proceedings” in Note 8 of Notes to Consolidated Financial Statements is incorporated herein by reference.
 
ITEM 4.   Submission of Matters to a Vote of Security Holders
 
No matters were submitted to a vote of security holders during the fourth quarter of the fiscal year covered by this report.
 
PART II
 
ITEM 5.   Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
 
Our common stock is quoted on the NASDAQ Global Select Market under the symbol “JNPR”.
 
Price Range of Common Stock
 
The following table sets forth the high and low closing bid prices as reported on NASDAQ:
 
                 
2007
  High     Low  
 
First quarter
  $ 20.77     $ 17.74  
Second quarter
  $ 25.50     $ 20.09  
Third quarter
  $ 37.09     $ 25.79  
Fourth quarter
  $ 37.65     $ 28.55  
 


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2006
           
 
First quarter
  $ 22.38     $ 17.06  
Second quarter
  $ 20.30     $ 14.55  
Third quarter
  $ 17.34     $ 12.20  
Fourth quarter
  $ 21.56     $ 16.77  
 
Holders
 
There were approximately 1,336 stockholders of record at February 1, 2008 and we have a substantially larger number of beneficial owners.
 
Dividends
 
We have never paid cash dividends on our common stock and have no present plans to do so.
 
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
 
None.
 
Company Stock Performance
 
The graph below shows the cumulative total stockholder return over a five year period assuming the investment of $100 on December 31, 2002 in each of Juniper Networks common stock, the NASDAQ Composite Index, the S&P 500 Index and the NASDAQ Telecommunications Index. Due to our inclusion in the S&P Index, we plan to replace the NASDAQ Composite Index with the S&P 500 Index in future presentations of this graph. The graph shall not be deemed to be incorporated by reference into other SEC filings; nor deemed to be soliciting material or filed with the Commission or subject to Regulation 14A or 14C or subject to Section 18 of the Exchange Act.
 
(PERFORMANCE GRAPH)

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ITEM 6.   Selected Consolidated Financial Data
 
The following selected consolidated financial data should be read in conjunction with Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Consolidated Financial Statements and the notes thereto in Item 8 “Consolidated Financial Statements and Supplementary Data.”
 
The information presented below reflects the impact of certain significant transactions and the adoption of certain accounting pronouncements, which makes a direct comparison difficult between each of the last five fiscal years. For a complete description of matters affecting the results in the tables below, including acquisitions by the Company during the three years ended December 31, 2007, see “Notes to Consolidated Financial Statements” in Item 8.
 
Consolidated Statements of Operations Data
 
                                         
    Year Ended December 31,  
    2007(a)     2006(b)     2005(c)     2004(d)     2003(e)  
                      (Unaudited)     (Unaudited)  
    (In millions, except per share data)  
 
Net revenues
  $ 2,836.1     $ 2,303.6     $ 2,064.0     $ 1,336.0     $ 701.4  
Cost of revenues
    927.6       754.3       653.5       415.1       259.9  
Gross margin
    1,908.5       1,549.3       1,410.5       920.9       441.5  
Operating expenses
    1,501.4       2,547.1       969.5       728.6       403.8  
Operating income (loss)
    407.1       (997.8 )     441.0       192.3       37.7  
Other income and expense, net
    103.5       100.7       56.5       15.8       1.9  
Income (loss) before income taxes
    510.6       (897.0 )     497.5       208.1       39.6  
Provision for income taxes
    (149.8 )     (104.4 )     (146.8 )     (79.9 )     (8.9 )
Net income (loss)
    360.8       (1,001.4 )     350.7       128.2       30.7  
Net income (loss) per share:
                                       
Basic
  $ 0.67     $ (1.76 )   $ 0.63     $ 0.26     $ 0.08  
Diluted
  $ 0.62     $ (1.76 )   $ 0.58     $ 0.24     $ 0.07  
Shares used in computing net income (loss) per share:
                                       
Basic
    537.8       567.5       554.2       493.1       382.2  
Diluted
    579.1       567.5       600.2       543.7       414.1  
 
 
(a) Includes the following significant pre-tax items: stock-based compensation of $88.0 million, stock option tender offer and tax related charges of $8.0 million, stock option investigation costs of $6.0 million, a gain from a minority equity investment of $6.7 million, and a net legal settlement gain of $5.3 million.
 
(b) Includes the following significant pre-tax items: goodwill and intangible assets impairment charges of $1,283.4 million, stock-based compensation of $87.6 million, stock option investigation costs of $20.5 million, other tax related charges of $10.1 million, and restructuring and acquisition related charges of $5.9 million.
 
(c) Includes the following significant pre-tax items: stock-based compensation expense of $22.3 million, in-process research and development charges of $11.0 million, a gain from the sale of equity investment of $1.7 million, a patent related charge of $10.0 million, a charge of $5.9 million from the impairment of certain purchased intangible assets and a reversal of acquisition related reserves of $6.6 million.
 
(d) Includes the following significant pre-tax items: stock-based compensation expense of $54.9 million, in-process research and development charges of $27.5 million, merger integration costs of $5.1 million, loss on redemption of the convertible subordinated notes of $4.1 million, an investment write-down charge of $2.9 million, and a credit of $5.1 million from changes in restructuring estimates.
 
(e) Includes the following significant pre-tax items: stock-based compensation expense of $21.4 million, restructuring charges of $14.0 million and gains on sales of investments of $8.7 million.


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Consolidated Balance Sheet Data
 
                                                 
    As of December 31,  
    2007     2006     2005     2004     2003        
                      (Unaudited)     (Unaudited)        
    (In millions)  
 
Cash, cash equivalents and available-for-sale investments
  $ 2,015.8     $ 2,614.3     $ 2,047.1     $ 1,713.1     $ 975.8          
Working capital
    1,175.3       1,759.2       1,261.4       903.9       423.2          
Goodwill
    3,658.6       3,624.7       4,879.7       4,409.4       983.4          
Total assets
    6,885.4       7,368.4       8,183.6       6,981.3       2,411.1          
Total long-term liabilities
    151.7       490.7       468.0       504.1       583.3          
Total stockholders’ equity
    5,353.9       6,115.1       7,088.2       5,974.3       1,562.4          
 
ITEM 7.   Management’s Discussion and Analysis of Financial Condition and Results of Operations
 
This Annual Report on Form 10-K (“Report”), including the “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, contains forward-looking statements regarding future events and the future results of our Company that are based on current expectations, estimates, forecasts, and projections about the industry in which we operate and the beliefs and assumptions of our management. Words such as ‘expects,’ ‘anticipates,’ ‘targets,’ ‘goals,’ ‘projects,’ ‘intends,’ ‘plans,’ ‘believes,’ ‘seeks,’ ‘estimates,’ variations of such words, and similar expressions are intended to identify such forward-looking statements. These forward-looking statements are only predictions and are subject to risks, uncertainties and assumptions that are difficult to predict. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Factors that might cause or contribute to such differences include, but are not limited to, those discussed in this Report under the section entitled “Risk Factors” in Item 1A of Part I and elsewhere, and in other reports we file with the Securities and Exchange Commission (“SEC”), specifically the most recent reports on Form 10-Q. We undertake no obligation to revise or update publicly any forward-looking statements for any reason.
 
The following discussion is based upon our Consolidated Financial Statements included elsewhere in this report, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingencies. In the course of operating our business, we routinely make decisions as to the timing of the payment of invoices, the collection of receivables, the manufacturing and shipment of products, the fulfillment of orders, the purchase of supplies, and the building of inventory and spare parts, among other matters. Each of these decisions has some impact on the financial results for any given period. In making these decisions, we consider various factors including contractual obligations, customer satisfaction, competition, internal and external financial targets and expectations, and financial planning objectives. On an on-going basis, we evaluate our estimates, including those related to sales returns, pricing credits, warranty costs, allowance for doubtful accounts, impairment of long-term assets, especially goodwill and intangible assets, contract manufacturer exposures for carrying and obsolete material charges, assumptions used in the valuation of stock-based compensation, and litigation. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
 
To aid in understanding our operating results for the periods covered by this report, we have provided an executive overview and a summary of the significant events that affected the most recent fiscal year and a discussion of the nature of our operating expenses. These sections should be read in conjunction with the more detailed discussion and analysis of our financial condition and results of operations in this Item 7, our “Risk Factors” section included in Item 1A of Part I, and our audited consolidated financial statements and notes included in Item 8 of Part II of this report.


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Executive Overview
 
Our 2007 performance was the result of a combination of strong market demand for networking and security products as well as our focused execution and market share gains. In addition, we began shipment of several new products which contributed to our revenue growth during the year. During 2007, we also implemented a series of operational excellence initiatives. These initiatives are intended to strengthen the management systems and processes throughout our organization to support our growth.
 
                                 
    Total
    Reportable Segments  
(In millions, except percentages)   Consolidated     Infrastructure     SLT     Service  
 
Net revenues
  $ 2,836.1     $ 1,753.2     $ 573.8     $ 509.1  
Year-over-year net revenues increase
    23 %     24 %     20 %     24 %
Management operating income (loss)
  $ 603.6     $ 495.5     $ (18.3 )   $ 126.4  
Year-over-year management operating income increase (decrease)
    18 %     18 %     (62 )%     25 %
Operating income
  $ 407.1                          
Year-over-year operating income increase
    141 %                        
Net income
  $ 360.8                          
Year-over-year net income increase
    N/M                          
Net income per share:
                               
Basic
  $ 0.67                          
Diluted
  $ 0.62                          
 
 
N/M — Not meaningful.
 
  •  Net Revenues:  Net revenue increased $532.5 million, or 23%, to $2,836.1 million in 2007, compared to 2006. We experienced growth in both product and service revenues, which represented 82.0% and 18.0% of our total net revenue in 2007. Product revenue increased $433.7 million, or 23%, to $2,327.0 million in 2007, compared to the year-ago period. Service revenue increased $98.8 million, or 24%, to $509.1 million in 2007, compared to 2006. Infrastructure product, SLT product and Service revenues represented 61.8%, 20.2% and 18.0% of our total net revenues, respectively, for 2007. Our revenue performance and share gains were driven by Infrastructure product and SLT product sales. Infrastructure product revenue increased $339.8 million, or 24%, in 2007 as compared to 2006 primarily attributable to revenue growth in our M- and T-series routers, as well as our recently introduced MX-series routers. SLT product revenue increased in 2007 as compared to 2006 primarily attributable to the increased sales of our firewall virtual private network (“Firewall”) products, including our recently introduced SSG320M and SSG350M firewall appliances, and to a lesser extent, increases in secure socket layer virtual private network (“SSL”), J-series, and WAN Optimization products. Service revenue increased in 2007 over the prior year primarily due to the increase in our installed base of equipment under service contracts and, to a lesser extent, growth in professional service revenue.
 
New Infrastructure products shipped in 2007 include the T1600 router and our MX-series product family. Our T1600 product is a high-capacity and energy-efficient core router. Our MX-series family of Ethernet Service Routers enables service providers to deliver advance services including IPTV and video-on-demand at scale. The MX-series includes MX960, a large capacity and high-density Carrier Ethernet platform, and MX480, which began shipping in the fourth quarter of 2007.
 
New SLT products introduced in 2007 include the SSG320M and SSG350M products, which are purpose-built appliances that deliver high performance and secure connectivity for regional and branch office. We also introduced new products within the J-series service router family, such as J2320 and J2350, which are designed to enable enterprises to accelerate the secure delivery of business critical applications across their networks. Additionally, we continued to make enhancements and design updates to other SLT product families during 2007.


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From a geographical perspective, net revenues grew across the Americas, Europe, Middle East and Africa (“EMEA”) and Asia Pacific (“APAC”) regions.
 
  •  Operating Margin:  Operating income increased $1,404.9 million to $407.1 million in 2007, compared to an operating loss of $997.8 million in 2006. Operating margin was 14.4% in 2007 as compared to -43.3% in 2006. The increase in operating margin was primarily attributable to decreases in operating expenses as a percentage of net revenue. Such decreases were largely due to the goodwill and intangible impairment charges of $1,283.4 million in 2006 and the absence of such charges in 2007. Additionally, to a lesser extent, operating margin improved due to the decrease in sales and marketing expenses as a percentage of net revenue as well as decreases in other charges associated with our internal stock option investigation, partially offset by increases in research and development expenses in 2007 as compared to 2006.
 
  •  Net Income and Net Income Per Share:  Net income was $360.8 million, or $0.62 per share on a diluted basis, in 2007, compared to a net loss of $1,001.4 million, or $1.76 per share on a diluted basis, in 2006. The increases in 2007 were primarily attributable to the goodwill and intangible impairment charges of $1,283.4 million in 2006 that were absent in 2007 as well as the revenue growth and an increase in operating margin as discussed above.
 
  •  Other Financial Highlights:  We used $1,623.2 million to repurchase 69.4 million shares of our common stock in 2007. Cash used in our stock repurchases was offset by cash flows from operating activities, investing activities and common stock issued to our employees in connection with our equity incentive plans of $786.5 million, $571.8 million, and $355.0 million, respectively, in 2007.
 
Significant Events
 
Business and Market Environment
 
In 2007, we benefited from the continued progress by our service provider customers in the build-out of Next Generation Networks (“NGN”) designed to support a fast and cost-effective deployment of multiple types of services (“multi-play services”), such as voice, data, and video, that enable our customers to develop new sources of revenue and profitability. We maintained a strong position in the Infrastructure product business and gained share in key market segments. We also experienced an increased interest in our SLT portfolio due to increased network demand from our enterprise customers as well as growth from service providers using our SLT products for both managed service offerings and outsourced solutions for their customers. Additionally, we continued our momentum in the enterprise market for our SLT products as well as routing products portfolio. We now serve over 95 of the Fortune 100 companies and more than 30,000 enterprise customers worldwide. In addition, over 45 out of the 50 state governments in the United States have deployed our technologies.
 
We believe our innovation and market momentum have enabled us to maintain relationships with our partners, including strategic resellers Alcatel-Lucent, Ericsson, Inc., and Nokia-Siemens Networks B.V. (“NSN”), while developing broader relationships with technology leaders such as International Business Machines Corporation (“IBM”) and Microsoft Corporation to better serve our customers.
 
Stock Repurchase Activity
 
We repurchased and retired 69.4 million common shares, at an average price of $23.37 per share for a total of $1,623.2 million as part of our $2.0 billion common stock repurchase program approved by our Board in July 2006 and February 2007 (the “2006 Stock Repurchase Program”). As of December 31, 2007, our 2006 Stock Repurchase Program had a remaining authorization of $376.8 million for repurchases. See Note 15 in Item 8 for discussion of our stock repurchase activity in 2008.
 
Stock Option Investigation and Amendment of Certain Stock Options
 
In 2007, we completed the restatement of our historical financial statements as a result of our independent stock option investigation and review of historical stock compensation practices. In addition, we regained compliance with listing standards of the NASDAQ Global Select Market. We recorded $6.0 million in operating


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expenses during 2007 in connection with this stock option investigation, compared to $20.5 million and nil in 2006 and 2005, respectively.
 
In April 2007, we completed a tender offer to amend certain options granted under the Juniper Networks, Inc. Amended & Restated 1996 Stock Plan and the Juniper Networks, Inc. 2000 Nonstatutory Stock Option Plan that had original exercise prices per share that were less than the fair market value per share of the common stock underlying the option on the option’s grant date, as determined by us for financial accounting purposes. Under this tender offer, employees subject to taxation in the United States and Canada had the opportunity to increase their strike price on affected options to the appropriate fair market value per share on the date of grant so as to avoid unfavorable tax consequences under United States Internal Revenue Code Section 409A (“409A issue”) or Canadian tax laws and regulations. In exchange for increasing the strike price of these options, we committed to make a cash payment to employees participating in the offer so as to make these employees whole for the incremental strike price as compared to their original option exercise price. In connection with the offer, we amended options to purchase 4.3 million shares of our common stock in 2007 and made aggregate cash payments of $7.6 million to offer participants in January 2008. We accrued this aggregate payment liability and recognized an operating expense for the corresponding amount during 2007.
 
Settlement with the Securities and Exchange Commission
 
On August 28, 2007, we announced that the Commissioners of the SEC authorized the settlement between us and the SEC regarding the previously disclosed SEC inquiry into our historical stock option granting practices. Without admitting or denying the allegations in the SEC’s complaint, we agreed to settle the charges by consenting to a permanent injunction against any future violations of the antifraud, reporting, books-and-records and internal control provisions of the federal securities laws. No monetary penalties were assessed against us in conjunction with this settlement. This settlement concludes the SEC’s formal investigation of the company with respect to our historical stock option granting practices.
 
Adoption of FIN 48
 
We adopted Financial Accounting Standards Board (“FASB”) Interpretation No. 48, Accounting for Uncertainty in Income Taxes, (“FIN 48”) on January 1, 2007, the first day of fiscal 2007. Under FIN 48, an entity may only recognize or continue to recognize tax positions that meet a “more likely than not” threshold. The cumulative effect of applying FIN 48 was a $19.2 million increase to the opening balance of accumulated deficit as of January 1, 2007 and a $1.0 million increase to goodwill.
 
As of the date of adoption, the total amount of gross unrecognized tax benefits was $85.2 million, of which $70.8 million, if recognized, would affect our effective tax rate.
 
In accordance with our accounting policy, we recognize accrued interest and penalties related to unrecognized tax benefits as a component of tax expense in the consolidated statement of operations. This policy did not change as a result of the adoption of FIN 48. We accrued interest expense and penalties of $4.1 million within other long-term liabilities in the consolidated balance sheets as of the date of adoption.
 
We conduct business globally and, as a result, we or one or more of our subsidiaries file income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business we are subject to examination by taxing authorities throughout the world, including such major jurisdictions as Ireland, Hong Kong, U.K., France, Germany, The Netherlands, Japan, China, Australia, and the U.S. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations for years before 2003, although carryforward attributes that were generated prior to 2003 may still be adjusted upon examination by the IRS if the attributes either have been or will be used in a future period.


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Nature of Expenses
 
Most of our manufacturing, repair and supply chain operations are outsourced to independent contract manufacturers. Accordingly, most of our cost of revenues consists of payments to our independent contract manufacturers for the standard product costs. The independent contract manufacturers produce our products using design specifications, quality assurance programs and standards that we establish. Controls around manufacturing, engineering and documentation are conducted at our facilities in Sunnyvale, California and Westford, Massachusetts. Our independent contract manufacturers have facilities primarily in Canada, China, Malaysia, and the United States. We generally do not own the components and title to products transfers from the contract manufacturers to us and immediately to our customers upon shipment.
 
The contract manufacturers procure components based on our build forecasts and if actual component usage is lower than our forecasts, we may be, and have been in the past, liable for carrying or obsolete material charges.
 
We have employees in our manufacturing and operations organization who manage relationships with our contract manufacturers, manage our supply chain, and monitor product testing and quality.
 
Employee related costs have historically been the primary driver of our operating expenses and we expect this trend to continue. Employee related costs include items such as wages, commissions, bonuses, vacation, benefits, stock-based compensation and travel. We had 5,879, 4,833, and 4,145 employees as of December 31, 2007, 2006, and 2005, respectively. The year-over-year increases were primarily attributable to increases in our research and development, sales and customer service activities. Our headcount is expected to increase in 2008 as we continue to expand these functions. We accounted for stock-based compensation under the fair value approach of FAS 123R in 2007 and 2006. In 2005, we accounted for stock-based compensation under the intrinsic value approach of APB 25. Details of our stock-based compensation expense are described in Note 1 and Note 9 in Notes to Consolidated Financial Statements of this Form 10-K.
 
Facility and information technology departmental costs are allocated to other departments based on headcount. These departmental costs have increased in 2007 and 2006 due to increases in headcount and facility leases resulting from infrastructure systems added to support our growth and past acquisitions. Facility and information technology related headcount was 224, 177, and 168 as of December 31, 2007, 2006, and 2005, respectively. In 2008, we expect to further invest in our company-wide information technology infrastructure as we implement our operational excellence initiatives.
 
Our operating expenses are denominated in U.S. dollars as well as other foreign currencies including the British Pound, the Euro, Indian Rupee, and Japanese Yen. Changes in related currency exchange rates may affect our operating results. Periodically, we use foreign currency forward and/or option contracts to hedge certain forecasted foreign currency transactions relating to operating expenses. The effective portion of the derivative’s gain or loss is initially reported as a component of accumulated other comprehensive income and, upon occurrence of the forecasted transaction, is subsequently reclassified into the consolidated statements of operations line item to which the hedged transaction relates. Any ineffectiveness of the hedging instruments is reported in other income (expense) on our consolidated statements of operations. The increase in operating expenses including research and development, sales and marketing, as well as general and administrative expenses, due to foreign currency fluctuations, net of hedging, was approximately 2% in 2007.
 
Critical Accounting Policies and Estimates
 
The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of net revenue and expenses in the reporting period. We regularly evaluate our estimates and assumptions. We base our estimates and assumptions on current facts, historical experience and various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. The actual results experienced by us may differ materially and adversely from management’s estimates. To the extent there are material differences between our estimates and the actual results, our future results of operations will be affected.


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We believe the following critical accounting policies require us to make significant judgments and estimates in the preparation of our consolidated financial statements:
 
  •  Revenue Recognition.  Our products are integrated with software that is essential to the functionality of our equipment. Additionally, we provide unspecified upgrades and enhancements related to our integrated software through our maintenance contracts for most of our products. Accordingly, we account for revenue in accordance with Statement of Position No. 97-2, Software Revenue Recognition, and all related interpretations. We recognize revenue when persuasive evidence of an arrangement exists, delivery or performance has occurred, the sales price is fixed or determinable and collectibility is reasonably assured. Evidence of an arrangement generally consists of customer purchase orders and, in certain instances, sales contracts or agreements. Shipping terms and related documents, or written evidence of customer acceptance, when applicable, are used to verify delivery or performance. In instances where we have outstanding obligations related to product delivery or the final acceptance of the product, revenue is deferred until all the delivery and acceptance criteria have been met. We assess whether the sales price is fixed or determinable based on payment terms and whether the sales price is subject to refund or adjustment. We assess collectibility based on the creditworthiness of the customer as determined by credit checks and the customer’s payment history to us. Accounts receivable are recorded net of allowance for doubtful accounts, estimated customer returns and pricing credits.
 
For arrangements with multiple elements, such as sales of products that include services, we allocate revenue to each element using the residual method based on vendor specific objective evidence of fair value of the undelivered items. Under the residual method, the amount of revenue allocated to delivered elements equals the total arrangement consideration less the aggregate fair value of any undelivered elements. Vendor specific objective evidence of fair value is based on the price charged when the element is sold separately. We then recognize revenue on each deliverable in accordance with our policies for product and service revenue recognition. If vendor specific objective evidence of fair value of one or more undelivered items does not exist, revenue is deferred and recognized at the earlier of (i) delivery of those elements or (ii) when fair value can be established unless maintenance is the only undelivered element, in which case, the entire arrangement fee is recognized ratably over the contractual support period. Our ability to recognize revenue in the future may be affected if actual selling prices are significantly less than fair value. In addition, our ability to recognize revenue in the future could be impacted by conditions imposed by our customers.
 
For sales to direct end-users and value-added resellers, we recognize product revenue upon transfer of title and risk of loss, which is generally upon shipment. It is our practice to identify an end-user prior to shipment to a value-added reseller. For our end-users and value-added resellers, there are no significant obligations for future performance such as rights of return or pricing credits. A portion of our sales are made through distributors under agreements allowing for pricing credits and/or rights of return. We recognize product revenue on sales made through these distributors upon sell-through as reported to us by the distributors. Deferred revenue on shipments to distributors reflects the effects of distributor pricing credits and the amount of gross margin expected to be realized upon sell-through. Deferred revenue is recorded net of the related product costs of revenue.
 
We record reductions to revenue for estimated product returns and pricing adjustments, such as rebates and price protection, in the same period that the related revenue is recorded. The amount of these reductions is based on historical sales returns and price protection credits, specific criteria included in rebate agreements, and other factors known at the time. Additional reductions to revenue would result if actual product returns or pricing adjustments exceed our estimates. In addition, we report revenue net of sales taxes.
 
Services include maintenance, training and professional services. Maintenance is offered under renewable contracts. Revenue from maintenance service contracts is deferred and is recognized ratably over the contractual support period, which is generally one to three years. Revenue from training and professional services is recognized as the services are completed or ratably over the contractual period, which is generally one year or less.
 
We sell certain interests in accounts receivables as part of a distributor accounts receivable financing arrangement which was established by us with a major financing company. Accounts receivables sold under


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this arrangement in advance of revenue recognition are accounted for as debt and were $10.0 million and nil as of December 31, 2007 and 2006, respectively.
 
  •  Contract Manufacturer Liabilities.  We outsource most of our manufacturing, repair and supply chain management operations to our independent contract manufacturers and a significant portion of our cost of revenues consists of payments to them. Our independent contract manufacturers procure components and manufacture our products based on our demand forecasts. These forecasts are based on our estimates of future demand for our products, which are in turn based on historical trends and an analysis from our sales and marketing organizations, adjusted for overall market conditions. We establish reserves for carrying charges and obsolete material charges for excess components purchased based on historical trends. If the actual component usage and product demand are significantly lower than forecasted, which may be caused by factors outside of our control, we have contractual liabilities and exposures with the independent contract manufacturers, such as carrying costs and obsolete material exposures, which would have an adverse impact on our gross margins and profitability.
 
  •  Warranty Reserve.  We generally offer a one-year warranty on all of our hardware products and a 90-day warranty on the media that contains the software embedded in the products. We establish reserves for estimated product warranty costs at the time revenue is recognized. Although we engage in extensive product quality programs and processes, our warranty obligation is affected by product failure rates, use of materials and technical labor costs and associated overhead incurred in correcting any product failure. Should actual product failure rates, use of materials or service delivery costs differ from our estimates, additional warranty reserves could be required, which could reduce gross margins.
 
  •  Goodwill and Purchased Intangible Assets.  Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible and intangible assets acquired. The amounts and useful lives assigned to other intangible assets impact the amount and timing of future amortization, and the amount assigned to in-process research and development is expensed immediately. The value of our intangible assets, including goodwill, could be impacted by future adverse changes such as: (i) future declines in our operating results, (ii) a decline in the valuation of technology company stocks, including the valuation of our common stock, (iii) significant slowdown in the worldwide economy or the networking industry or (iv) failure to meet the performance projections included in our forecasts of future operating results. We evaluate these assets on an annual basis as of November 1 or more frequently if we believe indicators of impairment exist. In the process of our annual impairment review, we use the market approach as well as the income approach methodology of valuation that includes the discounted cash flow method to determine the fair value of our intangible assets. Significant management judgment is required in the forecasts of future operating results that are used in the discounted cash flow method of valuation. The estimates we have used are consistent with the plans and estimates that we use to manage our business. It is possible, however, that the plans and estimates used may be incorrect. If our actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, we could incur additional impairment charges.
 
  •  Stock-Based Compensation.  We account for stock-based compensation in accordance with FAS No. 123R beginning in 2006. Under the provisions of Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment (“FAS 123R”), stock-based compensation cost is estimated at the grant date based on the award’s fair value as calculated by the Black-Scholes-Merton (“BSM”) option-pricing model and is recognized as expense ratably over the requisite service period. The BSM model requires various highly subjective assumptions including volatility, forfeiture rates, and expected option life. If any of the assumptions used in the BSM model change significantly, stock-based compensation expense may differ materially in the future from that recorded in the current period. In conjunction with the adoption of FAS 123R, we also adopted the single-approach method for valuing our stock-based awards as well as the straight-line method for amortizing the related stock-based compensation expense under the modified prospective approach. Prior to the adoption of FAS 123R, we accounted for stock-based compensation under the intrinsic value recognition provisions of APB Opinion No. 25, Accounting for Stock Issued to Employees (“APB 25”).


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  •  Income Taxes.  Estimates and judgments occur in the calculation of certain tax liabilities and in the determination of the recoverability of certain deferred tax assets, which arise from temporary differences and carry-forwards. Deferred tax assets and liabilities are measured using the currently enacted tax rates that apply to taxable income in effect for the years in which those tax assets are expected to be realized or settled. We regularly assess the likelihood that our deferred tax assets will be realized from recoverable income taxes or recovered from future taxable income based on the realization criteria set forth under FAS 109, Accounting for Income Taxes, and record a valuation allowance to reduce our deferred tax assets to the amount that we believe to be more likely than not realizable. We believe it is more likely than not that forecasted income together with the tax effects of the deferred tax liabilities will be sufficient to fully recover the remaining deferred tax assets. In the event that all or part of the net deferred tax assets are determined not to be realizable in the future, an adjustment to the valuation allowance would be charged to earnings in the period such determination is made. Similarly, if we subsequently realize deferred tax assets that were previously determined to be unrealizable, the respective valuation allowance would be reversed, resulting in a positive adjustment to earnings or a decrease in goodwill in the period such determination is made. In addition, the calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax regulations. We recognize potential liabilities based on our estimate of whether, and the extent to which, additional taxes will be due. If payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities may result in tax benefits being recognized in the period when we determine the liabilities are no longer necessary. If our estimate of tax liabilities is less than the amount ultimately assessed, a further charge to expense would result.
 
On January 1, 2007, we adopted FIN 48. FIN 48 is an interpretation of FASB Statement 109, Accounting for Income Taxes, and it seeks to reduce the diversity in practice associated with certain aspects of measurement and recognition in accounting for income taxes. FIN 48 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position that an entity takes or expects to take in a tax return. Additionally, FIN 48 provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosures and transition. Under FIN 48, an entity may only recognize or continue to recognize tax positions that meet a “more likely than not” threshold. In addition, the application of FIN 48 may increase an entity’s future effective tax rates and its future intra-period effective tax rate volatility. Our cumulative effect of applying FIN 48 was a $19.2 million increase to the opening balance of accumulated deficit as of January 1, 2007 and a $1.0 million increase to goodwill.
 
  •  Loss Contingencies.  We are subject to the possibility of various loss contingencies arising in the ordinary course of business. We consider the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as our ability to reasonably estimate the amount of loss, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. We regularly evaluate current information available to us to determine whether such accruals should be adjusted and whether new accruals are required. In addition, from time to time, we are involved in disputes, litigation and other legal actions. We are aggressively defending our current litigation matters; however, there are many uncertainties associated with any litigation, and these actions or other third party claims against us may cause us to incur costly litigation and/or substantial settlement charges. In addition, the resolution of any future intellectual property litigation may require us to make royalty payments, which could adversely impact gross margins in future periods. If any of those events were to occur, our business, financial condition and results of operations and cash flows could be materially and adversely affected. We record a charge equal to at least the minimum estimated liability for litigation costs or a loss contingency only when both of the following conditions are met: (i) information available prior to issuance of the financial statements indicates that it is probable that an asset had been impaired or a liability had been incurred at the date of the financial statements and (ii) the range of loss can be reasonably estimated. However, the actual liability in any such litigation may be materially different from our estimates, which could result in the need to record additional expenses.


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Results of Operations
 
Net Revenues
 
The following table shows total net product and service revenues and net product and service revenues as a percentage of total net revenues (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Net revenues:
                                                               
Product
  $ 2,327.0     $ 1,893.3     $ 433.7       23 %   $ 1,893.3     $ 1,771.0     $ 122.3       7 %
Percentage of net revenues
    82.0 %     82.2 %                     82.2 %     85.8 %                
Service
    509.1       410.3       98.8       24 %     410.3       293.0       117.3       40 %
Percentage of net revenues
    18.0 %     17.8 %                     17.8 %     14.2 %                
                                                                 
Total net revenues
  $ 2,836.1     $ 2,303.6     $ 532.5       23 %   $ 2,303.6     $ 2,064.0     $ 239.6       12 %
                                                                 
 
Our total net revenues increased $532.5 million, or 23% to $2,836.1 million in 2007 as compared to 2006. Our total net revenues increased $239.6 million, or 12% to $2,303.6 million in 2006 as compared to 2005. The increases in both years were primarily due to the demand growth in the markets we serve. In addition, we gained market share in several areas and capitalized on the opportunities in our targeted markets with our new and existing product and service offerings during 2007.
 
Net Product Revenues
 
Our net product revenue increased $433.7 million, or 23%, from 2006 to $2,327.0 million in 2007. The increase was the result of increased activity in both Infrastructure product and SLT product sales to service provider and enterprise markets. In particular we had success in selling our products to customers who are adopting NGN IP networks, which are designed to reduce total operating costs and to be able to offer multiple services over a single network. In addition, we had a number of new product releases and expanded into new emerging markets during 2007. Net product revenue grew $122.3 million, or 7% from 2005 to 2006, the majority of which was generated from our SLT product revenue growth in 2006.
 
The following table shows total net product revenues and net product revenues as a percentage of total net revenues by product category (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Net product revenues:
                                                               
Infrastructure
  $ 1,753.2     $ 1,413.4     $ 339.8       24 %   $ 1,413.4     $ 1,371.6     $ 41.8       3 %
Percentage of net revenues
    61.8 %     61.4 %                     61.4 %     66.5 %                
SLT
    573.8       479.9       93.9       20 %     479.9       399.4       80.5       20 %
Percentage of net revenues
    20.2 %     20.8 %                     20.8 %     19.3 %                
                                                                 
Total net product revenues
  $ 2,327.0     $ 1,893.3     $ 433.7       23 %   $ 1,893.3     $ 1,771.0     $ 122.3       7 %
                                                                 
 
Infrastructure Product Revenues
 
Infrastructure product revenues accounted for $1,753.2 million, or 61.8%, of total net revenues, and increased $339.8 million, or 24%, in 2007, compared to 2006. We benefited from the strong worldwide demand for high-performance router products as our service provider customers seek simplified, scalable network infrastructures across fiber, cable and mobile access technologies to support increasing performance demands on their networks. The Infrastructure product revenue increase in 2007 was primarily attributable to increased revenue from our M-, T-, and


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MX-series router products driven by our service provider customers’ continued build out of NGN as their bandwidth requirement increases. Our service provider customers also moved towards NGNs designed to enable a fast and cost-effective deployment of differentiating multi-play services that allow them to generate new sources of revenue. Also contributing to the revenue growth was an increase in Infrastructure product sales to the content service provider and the enterprise markets. From a geographical perspective, we experienced strength in the Americas region. We also experienced revenue increases in APAC and EMEA.
 
Infrastructure products accounted for $1,413.4 million, or 61.4%, of our total net revenues during 2006 and $1,371.6 million, or 66.5%, of our total net revenues during 2005. Infrastructure product net revenue grew by $41.8 million, or 3%, from 2005 to 2006 primarily due to continued success from a very significant year of growth in 2005, which strengthened our position as a supplier to the largest service providers in the world, particularly in the Americas and in EMEA. We experienced revenue growth in higher-end infrastructure chassis products and increased penetration by our core and edge router portfolio as service providers acquired products for their NGNs and multi-play service offerings. This growth was partially offset by a pause in the build out of NGNs and associated purchase decisions, particularly in Japan, as major carriers prepare for the next stage of bandwidth and services expansion, and a large product revenue deferral as of December 31, 2006 for products shipped to one of our largest customers.
 
We track Infrastructure chassis revenue units recognized and ports shipped to analyze customer trends and indicate areas of potential network growth. Our Infrastructure product platforms are essentially modular, with the chassis serving as the base of the platform. Each chassis has a certain number of slots that are available to be populated with components we refer to as modules or interfaces. The modules are the components through which the router receives incoming packets of data from a variety of transmission media. The physical connection between a transmission medium and a module is referred to as a port. The number of ports on a module varies widely depending on the functionality and throughput offered by the module. Chassis revenue units represent the number of chassis on which revenue was recognized during the period. The following table shows infrastructure revenue units recognized and ports shipped:
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     Unit Change     % Change     2006     2005     Unit Change     % Change  
 
Infrastructure chassis revenue units
    11,195       10,211       984       10 %     10,211       9,977       234       2 %
Infrastructure ports shipped
    225,452       160,318       65,134       41 %     160,318       153,763       6,555       4 %
 
Chassis revenue units increased 10% from 2006 to 2007 as our customers expanded the capacity in their existing networks. The increase was mainly due to the introduction of the MX-series products, which are our Carrier Ethernet base routers. We also experienced growth in our M- and T-series products, driven by bandwidth demand as service provider customers sought to expand voice and video capability in their existing networks. Port shipment units increased by 41% in 2007 as compared to 2006. The increase was associated with the growth in chassis revenue units with larger expansion capacity and the customers’ need to differentiate themselves by providing feature-rich multi-play services.
 
Chassis revenue units slightly increased from 2005 to 2006 due primarily to the sales of higher-end T-series and M-series products and the inclusion of the chassis units related to a 2005 acquisition, partially offset by decreases in sales of lower-end E-series and M-series products. Sales of higher-end chassis units increased as our customers continued to adopt and expand IP networks in order to reduce total operating costs and to be able to offer multiple services over a single network. Port shipment units increased from 2005 to 2006 primarily due to the increase in port demands driven by the larger expansion capacity in the higher-end chassis revenue units shipped during 2006, partially offset by the lower port capacity in the CTP-series chassis revenue units.
 
SLT Product Revenues
 
SLT product revenues accounted for 20.2% of total net revenues and increased $93.9 million, or 20%, to $573.8 million in 2007, compared to 2006. The revenue increase was due to sales increases across the majority of the SLT product families particularly the Firewall, SSL, WAN Optimization and J-series products. Our customers’


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demands for SLT products grew due to their increasing focus on addressing the risks associated with connecting and delivering critical network services and business applications. The integrated systems introduced prior to 2007, such as the ISG and SSG firewall products, gained traction in the market place and generated additional revenue in 2007. The revenue increase from our SSL products was due to our deployments of SSL solutions to enterprises and governments who were seeking to enhance their remote access to data and applications. We experienced considerable improvement in revenue from our WAN Optimization application acceleration platforms as customers sought to boost the responsiveness of their networks. All three geographic regions had significant growth in SLT sales during 2007. We experienced a growing demand for our SLT products in both the enterprise and service provider markets as we focused on cross-selling more integrated products and solutions in the enterprise and service provider markets while leveraging partnerships with open standards based interoperability of our SLT products. In addition, we benefited from typical fourth-quarter seasonality. We generally experienced seasonality and fluctuations in the demand for our SLT products, which may result in greater variations in our quarterly revenue.
 
In January 2008, we announced a plan to phase out our DX product line. These products will be supported until 2013. We do not expect this plan to have a material impact on our consolidated results of operations, cash flows, and financial condition.
 
SLT products accounted for $479.9 million, or 20.8%, of our total net revenues in 2006 and $399.4 million, or 19.3%, of total net revenues during 2005. SLT product net revenue increased $80.5 million, or 20%, from 2005 to 2006 due to a growing demand and brand recognition for our SLT products from large enterprises and the U.S. Federal Government. Sales increased across various SLT product families including Firewalls, IDP, J-series, DX, and SSL. In addition, the new products announced in 2006 and the DX and application acceleration products added to our portfolio through the various acquisitions in 2005 contributed to this increase. In addition, we experienced success in cross-selling SLT products to service providers for both their own IT infrastructure and resale built upon the acquisitions we completed in 2005. A further part of the increase was due to successfully selling to much larger enterprise customers with increased footprint and complexity.
 
The following table shows SLT revenue units recognized:
 
                                                                 
    Years Ended December 31,   Years Ended December 31,
    2007   2006   Unit Change   % Change   2006   2005   Unit Change   % Change
 
Service Layer Technologies units
    239,021       183,575       55,446       30 %     183,575       170,181       13,394       8 %
 
SLT product units increased in 2007 as compared to 2006 primarily attributable to the growing demand for our SLT products in the market place. The 30% increase in the number of SLT units was greater than the revenue increase of 20% primarily due to the increased revenue from sales of our branch firewall products, which have lower average selling price than other SLT products. SLT product units increased 8% while SLT product revenue increased 20% in 2006 as compared to 2005 primarily due to sales of high-end firewalls.
 
Net Service Revenues
 
Net service revenues increased $98.8 million, or 24%, to $509.1 million in 2007, compared to 2006, and represent 18.0% of net revenues. The growth in service revenue was primarily driven by increased technical support service contracts associated with higher Infrastructure and SLT product sales, which have resulted in increased renewals and a larger installed base of equipment being serviced. Installed base is calculated by each customer based on the number of systems that the customers has under maintenance. A majority of our service revenue is earned from customers who purchase our products and enter into maintenance contracts that are generally for one-year renewable periods. We also have multi-year maintenance contracts. These contracts are typically for services such as 24-hour customer support, non-specified updates and hardware repairs. We recognize revenue from service contracts as the services are completed or ratably over the period of the obligation. In addition to support services and professional services, we also provide educational services. Consistent with 2006, support service revenues represents 89% of net service revenues in 2007. To a lesser extent, professional services also contributed to the growth in net service revenues in 2007. Professional service revenue increased primarily due to large customer deployments requiring consulting services.


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Net service revenues increased $117.3 million, or 40%, from 2005 to 2006 primarily due to the growth in support services driven by an increase in the installed base that we are servicing, as well as increased attach rates on new product sales, improved enterprise service infrastructure allowing more rapid implementation of services and the addition of new professional service offerings. Professional service revenue also increased, to a lesser extent, in 2006 compared to 2005 due primarily to maintenance-related on-site engineering services as well as additional consulting projects in 2006.
 
Total Net Revenues by Geographic Region
 
The following table shows total net revenues by geographic region (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006*     $ Change     % Change     2006*     2005*     $ Change     % Change  
 
Americas:
                                                               
United States
  $ 1,215.8     $ 950.3     $ 265.5       28 %   $ 950.3     $ 879.0     $ 71.3       8 %
Other
    124.7       83.0       41.7       50 %     83.0       53.9       29.1       54 %
                                                                 
Total Americas
    1,340.5       1,033.3       307.2       30 %     1,033.3       932.9       100.4       11 %
Percentage of net revenues
    47.3 %     44.8 %                     44.8 %     45.2 %                
Europe, Middle East and Africa
    918.0       817.4       100.6       12 %     817.4       610.1       207.3       34 %
Percentage of net revenue
    32.4 %     35.5 %                     35.5 %     29.6 %                
Asia Pacific
    577.6       452.9       124.7       28 %     452.9       521.0       (68.1 )     13 %
Percentage of net revenues:
    20.3 %     19.7 %                     19.7 %     25.2 %                
                                                                 
Total
  $ 2,836.1     $ 2,303.6     $ 532.5       23 %   $ 2,303.6     $ 2,064.0     $ 239.6       12 %
                                                                 
 
 
* Prior year information has been reclassified to conform to the current period presentation.
 
We continue to experience varying distribution of revenue among our three geographic regions for the three years ended December 31, 2007 and we expect this trend to continue.
 
Net revenues in the Americas region increased $307.2 million, or 30%, to $1,340.5 million in 2007 as compared to 2006. The Americas region represented 47.3% of net revenues in 2007, an increase of 2.5 percentage points over 2006. The increases were largely due to strength in the United States and in Latin America. Net revenue from the United States increased $265.5 million in 2007 compared to 2006, primarily due to revenue growth in the Infrastructure product segment from our service provider and internet content provider customers and, to a lesser extent, SLT product and Service segments. Net revenues from Latin America increased $39.1 million in 2007, compared to 2006, primarily due to strength in Brazil driven by sales to a major local carrier. Total 2006 revenue recorded by the Americas region grew by $100.4 million from its 2005 level and remained at approximately 45% of worldwide revenue, as compared to 2005, due to significant success in the United States and with the main service providers in Canada and various South American countries including Brazil and Argentina. Net revenue in the United States increased by $71.3 million in 2006 from 2005 due to continued success both with enterprise customers such as the U.S. Federal Government, as well as with major service providers in the United States. The increase was also due in part to sales to major internet content providers and cable providers. This success was partially offset by a significant product revenue deferral for products shipped to one of our largest customers. Net revenue in Americas as a percentage of total net revenue decreased slightly in 2006 compared to 2005 as a result of the strong growth in EMEA.
 
Net revenue in the EMEA region increased $100.6 million, or 12%, to $918.0 million in 2007, compared to 2006, due to increased Infrastructure product and SLT product revenues along with increased service revenue driven by strong bandwidth demands in the region. Revenue increased in Belgium, Ireland, United Kingdom, and France,


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partially offset by a decrease in the Netherlands as well as revenue growth in the emerging markets such as Eastern Europe and the Middle East. Net revenue from EMEA as a percentage of net revenues decreased 3.1 percentage points to 32.4% in 2007 over 2006 primarily due to relative strength in the Americas region. Revenue in the EMEA region grew by $207.3 million, or 34%, in 2006, compared to 2005, due to significant success with NGN deployments across the region, in particular Sweden, the Netherlands, France, and Germany, as well as sales growth in emerging regions including Russia, Eastern Europe and the Middle East. As a result, net revenue from EMEA as a percentage of net revenues increased 5.9 percentage points to 35.5% in 2006 over 2005.
 
Net revenue in the Asia Pacific region increased $124.7 million, or 28%, to $577.6 million in 2007, compared to 2006, due to increased revenue from Infrastructure products, SLT products and Service driven by demands from service providers as well as enterprise customers resulting from cross-selling of our product portfolio. We experienced revenue growth across the region with strength in Korea, Australia, Malaysia, India and Indonesia. Revenue from the Asia Pacific region declined $68.1 million, or 13%, in 2006 as compared to 2005 primarily due to the impact of certain NGN project decision delays in Japan driving revenue down year over year, partially offset by increased demands in China.
 
NSN accounted for greater than 10% of our net product and service revenues for the years ended December 31, 2007, 2006, and 2005. We expect that our largest customers, as well as key strategic partners, will continue to account for a substantial portion of our net revenues in 2008.
 
Cost of Revenues
 
The following table shows cost of product and service revenues and the related gross margin (“GM”) percentages (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Cost of revenues:
                                                               
Product
  $ 676.2     $ 555.1     $ 121.1       22 %   $ 555.1     $ 506.3     $ 48.8       10 %
GM percentage of revenue
    70.9 %     70.7 %                     70.7 %     71.4 %                
Service
    251.4       199.2       52.2       26 %     199.2       147.2       52.0       35 %
GM percentage of revenue
    50.6 %     51.4 %                     51.4 %     49.8 %                
                                                                 
Total cost of revenues
  $ 927.6     $ 754.3     $ 173.3       23 %   $ 754.3     $ 653.5     $ 100.8       15 %
                                                                 
GM percentage of revenue
    67.3 %     67.3 %                     67.3 %     68.3 %                
 
Cost of Product Revenues
 
Product gross margin improved from 70.7% in 2006 to 70.9% in 2007. The slight increase in product gross margin was mainly due to favorable product mix and, to a lesser extent, improvements in standard costs of our Infrastructure products, partially offset by a slight decrease in our SLT product gross margin. The improvement of standard costs as a percentage of product revenue was primarily due to our increased purchases from contract manufacturers and suppliers in lower cost regions. As of December 31, 2007 and 2006, we employed 190 and 149 people, respectively, in our manufacturing and operations organization. These personnel manage relationships with our contract manufacturers, manage our supply chain, and monitor product testing and quality.
 
Infrastructure product gross margin percentages improved slightly in 2007 compared to 2006. Our Infrastructure chassis revenue units increased 10% while our Infrastructure ports shipped increased 41% during 2007, on a year-over-year basis, compared to the Infrastructure product revenues increase of 24% for the year. We experienced a favorable product mix and derived a larger portion of revenues from richly configured high-end M-series and T-series router products. We also generated revenues from high-margin port shipments, which are add-on components to the chassis routers. The increases in chassis units and port shipments were driven by bandwidth demand as customers are seeking to expand capabilities in their networks and to offer differentiating feature-rich multi-play services that allow them to generate new revenue sources. See further details in the “Infrastructure Product Revenues” section.


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The gross margin improvement from Infrastructure products was offset by a slight decrease in our SLT product gross margin in 2007. The decrease in SLT product gross margin was primarily due to product mix, particularly from an increase in the mix of lower margin branch Firewall and J-series products in 2007. In addition, higher manufacturing costs associated with newer and more complex products were also impacting SLT gross margin. The higher manufacturing costs were partially offset as we realized the benefit of our cost-reduction efforts of moving more manufacturing to lower cost regions. See further details in the “SLT Product Revenues” section.
 
Cost of product revenues increased $48.8 million, or 10%, in 2006 as compared to 2005. The increase was primarily attributable to increased product revenue in both the enterprise and service provider markets. Net product gross margin of 70.7% for 2006 slightly decreased, compared to 71.4% for 2005, primarily due to the impact of the mix of products and the mix of territories, partially offset by reduced manufacturing costs. As of December 31, 2006 and 2005, we employed 149 and 134 people, respectively, in our manufacturing and operations organization. The increase in stock compensation expense in cost of product revenue from 2005 to 2006 of $0.9 million was primarily due to the impact of adopting FAS 123R on January 1, 2006.
 
Product gross margins tend to fluctuate due to changes in the mix of products sold and our gross margins may be impacted as we introduce new products and manage production costs among multiple contract manufacturers or when our customers change the timing of their purchases. We will continue to seek reductions in our production costs as we enter into new markets, including markets with different pricing structures and cost structures. Our margins are impacted by changes in distribution channels and price competition as well as changes in the geographic mix of our sales. Sales discounts, warranty costs, changes in shipment volume, loss of cost savings due to changes in component pricing also impact gross margins. These factors, combined with how well we execute on our strategy and operating plans, may lead to margin variability.
 
Cost of Service Revenues
 
Cost of service revenues increased $52.2 million, or 26%, to $251.4 million in 2007 as compared to 2006. Service gross margin decreased by less than one percentage point to 50.6% in 2007 as compared to 2006. The increase in service costs and the decrease in gross margin were primarily attributable to increases in headcount related expenses associated with expanding our service delivery infrastructure and professional service organization, particularly in North America and in India, as well as increasing our resources for supporting network build-outs and deployments by our customers. Service related headcount increased by 137 employees, or 22%, to 748 employees in 2007, compared to 611 in 2006. Employee salary and related expenses, including stock-based compensation expense, represented the majority of the increases in cost of service revenues in 2007. Total employee salary and related expenses as a percentage of service revenues were approximately 25% for 2007 and 20% for 2006. Outside service expense increased as we used outside providers to support the increase in customer support contracts and professional engagements. Freight related expense increased due to the deployment of spare parts in supporting our growth overseas. Facility and IT expenses allocation to the cost of service revenues increased in 2007, which is consistent with other areas of our organization, due to our headcount growth and investment in internal infrastructure to support our growing business. Partially offsetting the increases was a decrease in spares expense due to the large spares purchase we made in 2006.
 
Cost of service revenues increased $52.0 million, or 35%, to $199.2 million in 2006 as compared to 2005. The increase was a direct result of a larger installed base of products covered by service contracts. However, our service gross margin increased one percentage point from 2005 to 2006 as a result of improved efficiencies and economies of scale, which result in a better leveraged service organization. Total employee salary and related expenses as a percentage of service revenue were approximately 20% for 2006 and 20% for 2005; however, in absolute dollars, employee salary and related expenses increased from 2005 to 2006 primarily due to an investment in new customer service personnel, particularly to support our enterprise customers. Stock compensation expense in cost of service revenue also increased from 2005 to 2006 primarily due to the impact of adopting FAS 123R in 2006. In addition to personnel expenses, outside services costs increased from 2005 to 2006 primarily due to contracting for engineers to provide professional services revenue, particularly for the Middle East and other emerging markets. Spares and freight costs increased from 2005 to 2006 due to a significant investment in spares around the world to support the increase in customer contracts, particularly in the enterprise market. Finally, the costs associated with facilities,


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depreciation and other expenses allocated to cost of service revenue increased from 2005 to 2006 due to increases in revenue and investment in infrastructure to support the growing business.
 
Research and Development, Sales and Marketing and General and Administrative Expenses
 
The table below highlights our operating expenses and operating income (loss) (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Research and development
  $ 623.0     $ 480.3     $ 142.7       30 %   $ 480.3     $ 357.3     $ 123.0       34 %
Sales and marketing
    666.7       558.0       108.7       19 %     558.0       441.6       116.4       26 %
General and administrative
    116.4       97.1       19.3       20 %     97.1       75.0       22.1       29 %
Amortization of purchased intangible assets
    85.9       91.8       (5.9 )     (6 )%     91.8       85.2       6.6       8 %
Impairment of goodwill and intangible assets
          1,283.4       (1,283.4 )     (100 )%     1,283.4       5.9       1,277.5       N/M  
In-process research and development
                                  11.0       (11.0 )     (100 )%
Other charges, net
    9.4       36.5       (27.1 )     (74 )%     36.5       (6.5 )     43.0       N/M  
                                                                 
Total operating expenses
  $ 1,501.4     $ 2,547.1     $ (1,045.7 )     (41 )%   $ 2,547.1     $ 969.5     $ 1,577.6       163 %
                                                                 
Operating income (loss)
  $ 407.1     $ (997.8 )   $ 1,404.9       141 %   $ (997.8 )   $ 441.0     $ (1,438.8 )     N/M  
                                                                 
 
 
N/M — Not meaningful.
 
The following table highlights our operating expenses and operating income (loss) as a percentage of net revenues:
 
                         
    Years Ended December 31,  
    2007     2006     2005  
 
Research and development
    22.0 %     20.8 %     17.3 %
Sales and marketing
    23.5 %     24.2 %     21.4 %
General and administrative
    4.1 %     4.2 %     3.6 %
Amortization of purchased intangible assets
    3.0 %     4.0 %     4.1 %
Impairment of goodwill and intangible assets
          55.7 %     0.3 %
In-process research and development
                0.6 %
Other charges, net
    0.3 %     1.7 %     (0.3 )%
                         
Total operating expenses
    52.9 %     110.6 %     47.0 %
                         
Operating income (loss)
    14.4 %     (43.3 )%     21.4 %
                         
 
Research and Development Expenses
 
Research and development expenses include:
 
  •  the costs of developing our products from components to prototypes to finished products,
 
  •  the costs for outside services such as certifications of new products, and
 
  •  expenditures associated with equipment used for testing.
 
Several components of our research and development effort require significant expenditures, such as the development of new components and the purchase of prototype equipment, the timing of which can cause quarterly variability in our expenses. We expense our research and development costs as they are incurred.
 
Research and development expense increased $142.7 million, or 30%, and increased 1.2 percentage points of net revenues in 2007 over 2006. The increase was largely due to our commitment to continue innovation of our


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products. In particular in 2007, we continued the development of our Ethernet products, including the MX-series and our new EX-series Ethernet switching products introduced in January 2008, as well as the development of our new T1600 product, which was released in November 2007. Personnel related expenses, which comprise the majority of our research and development expenses, increased primarily due to headcount growth and merit-based salary increases in 2007. Research and development related headcount increased by 493 employees, or 24%, in 2007 to 2,563 employees as of December 31, 2007. Headcount increase was primarily due to additional hires in the engineering organization within the Infrastructure segment. In addition to personnel related expenses, we also increased prototype and lab equipment expenses in 2007 for the development of our new products. Additionally our allocated facilities and information technology, as well as depreciation expenses, for our research and development organization increased in 2007 due to increases in headcount from additional internal systems to support our growth. In general, we grew our engineering organizations to support product innovation, expand and improve our product portfolio and address growth opportunities in NGN bandwidth and features for our service provider and enterprise customers.
 
Research and development expenses increased $123.0 million, or 3.5 percentage points of net revenues, in 2006 over 2005 as a result of our focus on the development of a broader portfolio of networking products. The increase in absolute dollars was primarily due to increases in personnel related expenses, depreciation, facility related expenses, engineering and testing expenses, outside service expenses and equipment related expenses. The increases in personnel related expenses in 2006 were primarily due to additional hires in the engineering organization across the Infrastructure and SLT segments. Headcount increased 19% from 1,736 individuals to 2,070 individuals during 2006. The headcount increase was attributable to product innovation efforts in areas including router security and integration in order to capture potential future NGN infrastructure growth and other opportunities in the enterprise and the service provider markets. To a lesser extent, the increases in personnel expenses were attributable to merit-based salary increases beginning in April 2006. Facility, engineering and testing expense increased in 2006 to support our product innovation efforts. Outside service expenses increased in 2006 primarily due to additional consulting projects on developing future product roadmaps. The increase in stock compensation expense in research and development expenses from 2005 to 2006 of $24.0 million was primarily due to the impact of adopting FAS 123R in 2006. Our investment and expansion on our global research and development efforts were primarily in China and India.
 
We plan to increase our investment in research and development during 2008, compared to 2007, to further advance our competitive advantage. As a percentage of net revenues, we anticipate our research and development spending will decrease slightly in 2008.
 
Sales and Marketing Expenses
 
Sales and marketing expenses include costs for promoting our products and services, demonstration equipment and advertisements. These costs vary quarter-to-quarter depending on revenues, product launches and marketing initiatives. We have an extensive distribution channel in place that we use to target new customers and increase sales. We have made substantial investments in our distribution channel during 2007, 2006 and 2005.
 
Sales and marketing expenses increased $108.7 million, or 19%, to $666.7 million and represented 23.5% of total net revenues in 2007, compared to 24.2% in 2006. As a percentage of net revenue, sales and marketing expenses decreased slightly in 2007 due to our focus on increasing our operating margin and the efficiency of our sales activities. The increases in absolute dollars were primarily headcount related increases. Sales and marketing related headcount increased 272 employees, or 17%, in 2007 to 1,863 as of December 31, 2007 as we hired additional personnel across our Infrastructure and SLT organizations to support the larger product portfolio and to expand our presence in the enterprise marketplace. In addition, commission expenses increased primarily as a result of strong revenue growth. In 2007, we also increased consulting expenses to support our sales and marketing initiatives. Likewise our need and expenses for demonstration equipment has grown as we seek to capture new markets and release new products. As the sales and marketing organization grows, we have also grown our information technology and facilities to these organizations, accounting for the increases of related expense allocations in 2007 over 2006.


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Sales and marketing expenses increased $116.4 million, or 26%, to $558.0 million in 2006 compared to 2005 and increased as a percent of total net revenues. The increases were primarily due to increases in personnel related expenses, facility related expenses, travel expenses, marketing related activities, and equipment related expenses. Personnel related expenses increased in 2006 primarily due to additional hires to support the expansion of our distribution channels and customer base, as well as to support the larger portfolio of products. In particular, we expanded our enterprise sales force, and targeted key growth areas such as China, the Middle East and India. We added 171 individuals to our sales and marketing function during 2006. Travel expense increased in 2006 due primarily to increased headcount and more activity in emerging markets. Marketing related activities increased primarily as a result of specific activities designed to expand and improve our brand recognition, support of our distribution channels, introduction of new products, targeted solution value propositions and increase awareness of our existing products to a broader range of customers. Equipment related expenses increased in 2006 due to the introduction of new products. The increase in stock compensation expenses in sales and marketing from 2005 to 2006 of $24.5 million was primarily due to the impact of adopting FAS 123R in 2006.
 
We plan to continue our investment in sales and marketing activities in both direct and channel sales as well as our service provider and enterprise focus. We anticipate our sales and marketing expenses to increase in absolute dollars but decrease as a percentage of net revenues in 2008.
 
General and Administrative Expenses
 
General and administrative expenses include professional fees, bad debt provisions and other corporate expenses. Professional fees include legal, audit, tax, accounting and certain corporate strategic services.
 
General and administrative expenses increased $19.3 million, or 20%, and represented 4.1% of total net revenues in 2007, compared to 4.2% in 2006. As a percentage of net revenue, general and administrative expenses slightly decreased in 2007 due to our focus on increasing our operating margin. The increases in absolute dollars were primarily due to increases in personnel related expenses and outside professional services. Employee related expenses, including salaries, bonuses, stock-based compensation, and fringe benefits expenses, increased in 2007 over 2006, as headcount increased by 56 employees, or 24%, in 2007 to 291 employees as of December 31, 2007. The headcount increases were primarily in the finance and human resources organizations as we expanded our organization infrastructure in lower cost regions, improved internal processes and continued our initiatives to update our information systems. Outside services increased $4.5 million in 2007, compared to 2006, as we invested in designing a more efficient organizational structure and improving our internal systems. Such increases were offset by the decreases in accounting and legal fees of $1.5 million for 2007, compared to 2006. Consistent with other areas of our organization, facilities and information technology allocations increased in order to support these initiatives and the growth of our business.
 
General and administrative expenses increased $22.1 million, or 29%, in 2006 compared to 2005. As a percentage of net revenues, general and administrative expenses increased slightly from 3.6% in 2005 to 4.2% in 2006. The increases were driven by increases in personnel related expenses and other related expenses. General and administrative world-wide headcount increased 11%, or 24 individuals, during 2006, to support the overall growth in the business. Bad debt expense increased in 2006 primarily due to a bad debt expense benefit in 2005. Facility and IT related allocation expense increased as a result of our personnel growth and development of our systems infrastructure. The increase of general and administrative related stock compensation expense from 2005 to 2006 of $11.8 million was primarily due to the impact of adopting FAS 123R in 2006.
 
We anticipate our general and administrative expenses to increase in absolute dollars but decrease as a percentage of net revenues in 2008.
 
Amortization of Purchased Intangible Assets
 
Amortization of purchased intangible assets decreased $5.9 million due to purchased intangible assets reaching the end of the amortization period during 2007 as compared to 2006. Amortization of purchased intangible assets increased $6.6 million in 2006, compared to 2005, as a result of recognizing a full year of amortization associated with the five acquisitions completed in 2005. See Note 3 in Item 8 for more information on our purchased intangible assets.


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Impairment of Goodwill and Purchased Intangible Assets
 
We had no impairment against our goodwill or intangible assets in 2007. Impairment charges increased by $1,277.5 million in 2006, compared to 2005, as a result of the impairment of both goodwill and purchased intangible assets during 2006. Due primarily to the decline in the Company’s market capitalization that occurred over a period of approximately six months prior to the impairment review and, to a lesser extent, to a decrease in the forecasted future cash flows used in the income approach, we evaluated the carrying value of our goodwill and reduced the goodwill within the SLT segment by $1,280.0 million. In addition, we recorded a $3.4 million impairment expense pertaining to a write-down of intangible assets as a result of a decrease in forecasted revenue for the SBC stand-alone products during the second quarter of 2006. In 2005, we wrote down $5.9 million of purchased intangible assets acquired from Kagoor Networks, Inc. (“Kagoor”). See Note 3 in Item 8 for more information on our impairment of goodwill and purchased intangible assets.
 
In-Process Research and Development
 
We had no in-process research and development (“IPR&D”) charges in 2007 and 2006. In 2005, a total of $11.0 million was charged to IPR&D expense in connection with three of our five acquisitions during the year. Of the total Funk purchase price, $5.3 million was allocated to IPR&D. Of the total Peribit purchase price, $3.8 million was allocated to IPR&D. Of the total Kagoor purchase price, $1.9 million was allocated to IPR&D. None of the Acorn Packet Solutions, Inc. (“Acorn”) or Redline Networks, Inc. (“Redline”) purchase prices were allocated to IPR&D.
 
Projects that qualify as IPR&D represent those that have not yet reached technological feasibility and which have no alternative future use. Technological feasibility is defined as being equivalent to a beta-phase working prototype in which there is no remaining risk relating to the development. At the time of acquisition, Funk, Peribit, and Kagoor had multiple IPR&D efforts under way for certain current and future product lines.
 
  •  For Funk, these efforts included development of new versions for the Steel-Belted Radius (“SBR”), SBR High Availability (“HA”), and Mobile IP Module (“MIM”) II products — all related to the Radius product offering. IPR&D as of the acquisition date also included development of new versions for Endpoint Assurance, Proxy (Remote Control), and Odyssey product families. At the time of the Funk acquisition, it was estimated that these development efforts would be completed over the next four months at an estimated cost of approximately $0.9 million. These development efforts had been completed as of December 31, 2007.
 
  •  For Peribit, these efforts included the development of next versions of software for the Sequence Reducer (“SR”) family, Sequence Mirror (“SM”) family, the Central Management System (“CMS”) products, as well as a hardware program for both the SR and SM families. At the time of the Peribit acquisition, it was estimated that these development efforts would be completed over the next twelve months at an estimated cost of approximately $2.3 million. These development efforts had been completed as of December 31, 2007.
 
  •  For Kagoor, these efforts included a variety of signaling protocols and next generation products and operating systems. At the time of the Kagoor acquisition, it was estimated that these development efforts would be completed over the next eight months at an estimated cost of approximately $0.8 million. These development efforts had been completed as of December 31, 2007.
 
Other Charges, Net
 
Other charges are summarized as follows:
 
  •  Restructuring and Acquisition Related Reserves.  In 2007, we recorded net restructuring and acquisition related charges of $0.7 million, of which $1.1 million pertained to bonus accruals associated with past acquisitions, partially offset by a benefit of $0.4 million pertaining to net restructuring adjustments. We recorded net restructuring and acquisition related bonus expenses of $5.9 million in 2006, of which $5.6 million was due to bonus accruals associated with the Funk and Acorn acquisitions and $0.3 million was due to net restructuring related charges, including $0.7 million in restructuring charges associated with


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  the initiation of a restructuring plan which focused on some product development costs reductions and the discontinuation of our SBC product. The $6.5 million restructuring and acquisition related benefit in 2005 primarily consisted of $6.9 million in adjustments related to our restructuring accrual when we re-occupied a portion of the former NetScreen facility that was previously included in this acquisition related restructuring reserve, partially offset by a $0.3 million bonus and earn-out accrual related to the Funk and Acorn acquisitions.
 
  •  Stock Option Investigation Costs.  We recorded expenses of $6.0 million and $20.5 million in 2007 and 2006, respectively, relating to professional fees and other costs in connection with our stock option investigation. There were no such charges in 2005.
 
  •  Stock Option Amendment and Tax Related Charges.  We recorded $8.0 million and $10.1 million in operating expense during 2007 and 2006, respectively, in relation to the amendment of stock options and to the payment of certain taxes and penalties associated with stock option exercises by employees. There were no such charges in 2005.
 
  •  Net Settlement Gain.  We recognized a net legal settlement gain of $5.3 million in 2007 in connection with cash settlement proceeds of $6.2 million, net of the $0.9 million legal expense related to direct transaction costs incurred in the third quarter of 2007.
 
Other Income and Expenses
 
Interest and Other Income, Interest and Other Expense, Gain on Minority Equity Investment, and Income Tax Provision
 
The following table highlights other income, other expenses and income tax provision for the indicated periods (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Interest and other income, net
  $ 96.8     $ 100.7     $ (3.9 )     (4 )%   $ 100.7     $ 55.2     $ 45.5       82 %
Percentage of net revenues
    3.4 %     4.4 %                     4.4 %     2.7 %                
Gain on and (write-down of) investments, net
    6.7             6.7       100 %           1.3       (1.3 )     (100 )%
Percentage of net revenues
    0.2 %                                 0.1 %                
Income tax provision
    149.8       104.4       45.4       43 %     104.4       146.8       (42.4 )     (29 )%
Percentage of net revenues
    5.3 %     4.5 %                     4.5 %     7.1 %                
 
Interest and Other Income, Net
 
Net interest and other income decreased $3.9 million, or 4%, in 2007 compared to 2006. This decrease was due to decreases in interest income resulting from a lower cash, cash equivalents and investment balance attributable to our funding of our repurchase of approximately $1.6 billion of our common stock during the first and second quarters of 2007. Partially offsetting the decreases was the higher interest yield combined with a higher average cash, cash equivalents and investment balances particularly in the beginning of 2007, primarily due to higher positive cash flows from operations compared to 2006. Interest and other expenses slightly increased in 2007 compared to 2006, primarily due to costs associated with our distributor financing program. Other interest and expenses include short-term debt expenses, debt issuance cost amortization, foreign exchange losses and other expenses such as bank fees.
 
Net interest and other income increased $45.5 million in 2006 compared to 2005 primarily due to a $45.8 million increase in interest income from 2005 to 2006 as a result of higher cash, cash equivalents and investment balances and an increase in rates of return realized from our investments throughout 2006. Also, interest and other expense decreased $0.3 million from 2005 and 2006 primarily due to lower portfolio management fees.


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Gain on and (Write-Down of) Investments, Net
 
In June 2007, one of the companies in which we had a minority equity investment completed an initial public offering (“IPO”). As a result, we realized a gain of $6.7 million during 2007 based upon the difference between the market value of our investment at the time of the IPO and our cost basis. During 2006, none of our investments had any gain or loss. In 2005, we recorded a gain of $1.7 million in connection with a business combination transaction of a privately held company in our investment portfolio. Our cost basis of this equity investment was $1.0 million. We have certain minority equity investments in privately held companies that are carried at cost, adjusted for any impairment, as we do not have a controlling interest and do not have the ability to exercise significant influence over these companies. In addition, during 2005, we wrote-down these investments by $0.4 million for changes in market value that we believed were other-than-temporary.
 
Income Tax Provision
 
Provision for income taxes increased to $149.8 million in 2007 from $104.4 million in 2006. The 2007 effective rate was 29.3% and differs from the federal statutory rate of 35.0% primarily due to the benefit of income in foreign jurisdictions which is subject to lower rates and research and development credits in the United States.
 
Provision for income taxes decreased to $104.4 million in 2006 from $146.8 million in 2005. The 2006 effective rate was (11.6%) and differs from the federal statutory rate of 35.0% primarily due to the inability to benefit from a substantial portion of the goodwill impairment charge recorded in 2006. The 2005 effective rate was 29.5% and differs from the federal statutory rate of 35.0% due primarily to the benefit of tax credits, income in foreign jurisdictions taxed at lower rates and a reduction in deferred tax liabilities related to the repatriation in 2005 of $225.0 million under the American Jobs Creation Act of 2004.
 
The gross unrecognized tax benefits increased by approximately $9.5 million for 2007, of which $8.4 million, if recognized, would affect the effective tax rate. Interest and penalties accrued for the same period were approximately $1.7 million.
 
It is reasonably possible that the amount of the liability for unrecognized tax benefits may change within the next 12 months due to audit examinations. However, an estimate of the range of possible change cannot be made at this time due to the high uncertainty of the resolution of and/or closure on open audits.
 
We are currently under examination by the IRS for the 2004 tax year and by the German tax authorities for the 2005 tax year. Additionally, we have not reached a final resolution with the IRS on an adjustment it proposed for the 1999 and 2000 tax years. We are not under examination by any other major jurisdictions in which the Company files its income tax returns as of December 31, 2007. It is possible that the amount of the liability for unrecognized tax benefits may change within the next 12 months. However, an estimate of the range of possible change cannot be made at this time. We have provided for uncertain tax positions that require a FIN 48 liability.
 
Additional details related to our income tax provision can be found in Note 13 of Notes to the Consolidated Financial Statements.
 
Segment Information
 
A description of the products and services for each segment can be found in Note 11 to the Consolidated Financial Statements. We began to track financial information by our three segments in 2005 as our management structure and responsibilities began to measure the business based on management operating income (loss). A description of the measures included in management operating income (loss) can also be found in Note 11 to the Consolidated Financial Statements. We have included segment financial data for each of the three years in the period ended December 31, 2007 for comparative purposes.


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Financial information for each segment used by management to make financial decisions and allocate resources is as follows (in millions, except percentages):
 
                                                                 
    Years Ended December 31,     Years Ended December 31,  
    2007     2006     $ Change     % Change     2006     2005     $ Change     % Change  
 
Net revenues:
                                                               
Infrastructure
  $ 1,753.2     $ 1,413.4     $ 339.8       24 %   $ 1,413.4     $ 1,371.6     $ 41.8       3 %
Service Layer Technologies
    573.8       479.9       93.9       20 %     479.9       399.4       80.5       20 %
Service
    509.1       410.3       98.8       24 %     410.3       293.0       117.3       40 %
                                                                 
Total net revenues
  $ 2,836.1     $ 2,303.6     $ 532.5       23 %   $ 2,303.6     $ 2,064.0     $ 239.6       12 %
Management operating income (loss)(1):
                                                               
Infrastructure
  $ 495.5     $ 420.9     $ 74.6       18 %   $ 420.9     $ 489.2     $ (68.3 )     (14 )%
Service Layer Technologies
    (18.3 )     (11.3 )     (7.0 )     (62 )%     (11.3 )     10.4       (21.7 )     (209 )%
Service
    126.4       101.5       24.9       25 %     101.5       72.2       29.3       41 %
                                                                 
Total management operating income
    603.6       511.1       92.5       18 %     511.1       571.8       (60.7 )     (11 )%
Amortization of purchased intangible assets
    (91.4 )     (97.3 )     5.9       (6 )%     (97.3 )     (85.2 )     (12.1 )     14 %
Stock based compensation expense
    (88.0 )     (87.6 )     (0.4 )           (87.6 )     (22.3 )     (65.3 )     N/M  
Stock based compensation related payroll tax
    (7.7 )     (2.7 )     (5.0 )     185 %     (2.7 )     (2.9 )     0.2       (10 )%
Impairment of goodwill and intangible assets
          (1,283.4 )     1,283.4       (100 )%     (1,283.4 )     (5.9 )     (1,277.5 )     N/M  
In-process research and development
                                  (11.0 )     11.0       (100 )%
Other expense, net(2)
    (9.4 )     (37.9 )     28.5       (75 )%     (37.9 )     (3.5 )     (34.4 )     N/M  
                                                                 
Total operating income (loss)
    407.1       (997.8 )     1,404.9       141 %     (997.8 )     441.0       (1,438.8 )     N/M  
Interest and other income, net
    96.8       100.7       (3.9 )     (4 )%     100.7       55.2       45.5       82 %
Gain on (write-down of) investments, net
    6.7             6.7       100 %           1.3       (1.3 )     (100 )%
                                                                 
Income (loss) before income taxes
  $ 510.6     $ (897.1 )   $ 1,407.7       157 %   $ (897.1 )   $ 497.5     $ (1,394.6 )     N/M  
                                                                 
 
 
(1) Prior year information has been reclassified to conform to our current year presentation.
 
(2) Other expense, net, for 2007 included charges such as restructuring, acquisition related charges, stock option investigation costs, as well as stock amendment and tax related charges. Other expense, net, for 2006 included charges such as restructuring, acquisition related charges, stock option investigation costs and tax related charges, as well as certain restructuring charges in cost of product revenues. Other expense, net, for 2005 included charges such as restructuring, acquisition related charges and patent related charges.


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The following table shows financial information for each segment as a percentage of total net revenues:
 
                         
    Years Ended December 31,  
    2007     2006     2005  
 
Net revenues:
                       
Infrastructure
    61.8 %     61.4 %     66.5 %
Service Layer Technologies
    20.2 %     20.8 %     19.3 %
Service
    18.0 %     17.8 %     14.2 %
                         
Total net revenues
    100.0 %     100.0 %     100.0 %
Management operating income (loss):
                       
Infrastructure
    17.4 %     18.3 %     23.7 %
Service Layer Technologies
    (0.6 )%     (0.5 )%     0.5 %
Service
    4.5 %     4.4 %     3.5 %
                         
Total management operating income
    21.3 %     22.2 %     27.7 %
Amortization of purchased intangible assets
    (3.2 )%     (4.2 )%     (4.1 )%
Stock-based compensation expense
    (3.1 )%     (3.8 )%     (1.1 )%
Stock-based compensation related payroll expense
    (0.3 )%     (0.1 )%     (0.1 )%
Impairment of goodwill and intangible assets
          (55.7 )%     (0.3 )%
In-process research and development
                (0.6 )%
Other expense, net
    (0.3 )%     (1.7 )%     (0.1 )%
                         
Total operating income (loss)
    14.4 %     (43.3 )%     21.4 %
Interest and other income, net
    3.4 %     4.4 %     2.7 %
Gain on minority equity investment
    0.2 %            
                         
Income (loss) before income taxes
    18.0 %     (38.9 )%     24.1 %
                         
 
Infrastructure Operating Segment
 
An analysis of the change in revenue for the Infrastructure segment, and the change in units, can be found above in the section titled “Net Revenues.”
 
Infrastructure management operating income increased $74.6 million, or 18%, from 2006 to $495.5 million in 2007 due to revenue growth outpacing expense growth. Our increase in revenue was partially offset by our continued investments in research and development efforts as we seek to continue our innovation of products and expand our Infrastructure product portfolio. We also allocate sales and marketing, general and administrative, as well as facility and information technology expenses to the Infrastructure segment generally based on headcount and revenue. In 2007, our sales and marketing expenses decreased slightly as a percentage of net revenues but increased in absolute dollars as we increased our efforts to reach enterprise and service provider customers. We will continue to make these investments to expand our product features and functionality based upon the trends in the market place.
 
Infrastructure management operating income decreased $68.3 million, or 14%, from 2005 to $420.9 million in 2006 primarily due to higher personnel related costs associated with our investments in product innovation for next generation core and edge infrastructure products as well as increased operating expenses associated with marketing related efforts and improvements to our internal infrastructure, partially offset by savings in sales expense during 2006 as we increasingly leveraged our existing distribution channel.
 
SLT Operating Segment
 
An analysis of the change in revenue for the SLT segment, and the change in units, can be found in the section titled “Net Revenues.”


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SLT management operating loss increased $7.0 million, or 62%, from 2006 to $18.3 million in 2007 due to product mix and increases in manufacturing related costs. The loss was primarily due to our effort to build a foundation to help enable future SLT revenue growth and due to slight decreases in the SLT product gross margins. The increase in SLT operating expenses was due in large part to our increased allocated expenses to the SLT segment from both information technology investments and the higher variable compensation expenses associated with company-wide revenue growth. Additionally, we strategically invested in our research and development efforts to develop technologies and products for the JUNOS platform. In an effort to control costs, we have moved a significant portion of the SLT development organization to lower cost regions while expanding our product portfolio. SLT management operating loss was also impacted by continued investments in our sales and distribution channels. We allocate sales and marketing, general and administrative, as well as facility and information technology expenses to the SLT segment generally based on revenue and headcount. In the third quarter of 2007, we increased our allocation of such expenses to the SLT segment, compared to the same period in 2006, primarily due to information technology investments and the higher variable compensation expenses associated with company-wide revenue increases. SLT gross margin decreased slightly in 2007, as compared to 2006, due to higher manufacturing costs associated with newer and more complex products. Such higher manufacturing costs were partially offset as we realized the benefit of our cost-reduction efforts of moving more manufacturing to lower cost regions. The increases in SLT operating expenses were partially offset by our revenue growth especially in the fourth quarter of 2007 due to customers’ demands for security products, particularly Firewall, and due to typical quarterly seasonality. We generally experienced quarterly seasonality and fluctuations in the demand for our SLT products, particularly in the fourth quarter, which may result in greater variations in our quarterly operating results.
 
The SLT segment incurred a management operating loss of $11.3 million in 2006, compared to the management operating income of $10.4 million in 2005, due primarily to higher product and personnel related costs, partially offset by higher SLT net revenues and gross margin. Increases in personnel related costs were primarily related to headcount growth in order to support product innovation, new products sales and a larger customer base. We made a strategic decision to invest more into the enterprise and SLT markets to drive increased revenues and SLT productivity in the future.
 
Service Operating Segment
 
An analysis of the change in revenue for the Service segment can be found above in the section titled “Net Revenue.”
 
Service management operating income increased $24.9 million, or 25%, from 2006 to $126.4 million in 2007 by achieving economies of scale and cost control initiatives. Revenue growth surpassed cost of service expense growth in 2007 primarily due to our growth in installed base of equipment being serviced. We also increased our service offerings and customer service infrastructure. Our Service gross margin slightly decreased from 2006 to 2007 as we increased our headcount to build our global customer service and professional service organizations. We expanded our customer service center in both North America and India as well as increased our resources for supporting network build-outs and deployments by our customers. Service management operating income was also impacted by sales and marketing, general and administrative expenses as well as facilities and information systems management allocations to the service segment.
 
Service gross margin percentages as well as Service management operating income increased from 2005 to 2006 due primarily to improved economies of scale achieved by faster revenue growth through the Infrastructure products and the SLT products relative to the increases in operating costs. In absolute dollars, employee related expenses increased in 2006 as a result of increased service related headcount from 476 to 611 individuals. Expenses associated with spare components also increased in 2006 to support increased demands driven by additional service contracts as a result of our growing installed base.
 
Stock-Based Compensation and Related Payroll Taxes
 
Stock-based compensation expense increased by $0.4 million in 2007 as compared to 2006. The increase was primarily attributable to new stock options and RSU grants, partially offset by the lower stock option expense in 2007 as a result of the acceleration of the vesting of certain unvested and “out-of-the-money” stock options


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completed in December 2005 (“2005 stock option vesting acceleration”). Stock-based compensation related payroll tax expense increased $5.0 million in 2007. These expenses represent employment taxes we incurred in connection with our employee stock programs. Changes in such expenses are primarily attributable to the timing of the stock options exercises by our employees. We experienced a considerable increase in these expenses due to the increase in our share price occurring in 2007. In contrast, we had restrictions on stock option exercises during 2006.
 
Stock-based compensation expense increased by $65.3 million in 2006 as compared to 2005 primarily due to the adoption of FAS 123R. Stock-based compensation related payroll tax expense decreased $0.2 million in 2006, compared to 2005 primarily due to restrictions on stock option exercises in 2006 as a result of our delayed periodic filings with the SEC.
 
In-Process Research and Development
 
There were no IPR&D charges in 2007 and 2006. We recognized IPR&D charges of $11.0 million 2005 in connection with the acquisitions completed during the year.
 
Restructuring Charges in Cost of Product Revenues
 
There was no restructuring charges included in cost of product revenues during 2007 and 2005. We recognized restructuring charges in cost of product revenues of $1.4 million for 2006 in connection with the restructuring plan implemented during the year.
 
Amortization of Purchased Intangible Assets, Impairment of Goodwill and Intangible Assets, Other Expense, Gain on Investments, and Net Interest and Other Income
 
See “Results of Operations” section for further information.
 
Key Performance Measures
 
In addition to the financial metrics included in the consolidated financial statements, we use the following key performance measures to assess operating results:
 
                         
    Years Ended December 31,  
    2007     2006     2005  
 
Days sales outstanding (DSO)(a)
    42       38       42  
Book-to-bill ratio(b)
    >1       >1       <1  
 
 
(a) Days sales outstanding, or DSO, is calculated as the ratio of ending accounts receivable, net of allowances, divided by average daily net sales for the preceding 90 days.
 
(b) Book-to-bill ratio represents the ratio of customer orders divided by the sum of product shipments and service invoicing during the respective period.


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Liquidity and Capital Resources
 
  Overview
 
We have funded our business by issuing securities and through our operating activities. The following table shows our capital resources (in millions):
 
                                 
    December 31,
    December 31,
             
    2007     2006     $ Change     % Change  
 
Working capital
  $ 1,175.3     $ 1,759.2     $ (583.9 )     (33 )%
                                 
Cash and cash equivalents
    1,716.1       1,596.3       119.8       8 %
Short-term investments
    240.4       443.9       (203.5 )     (46 )%
Long-term investments
    59.3       574.1       (514.8 )     (90 )%
                                 
Total cash, cash equivalents and available-for-sale investments
  $ 2,015.8     $ 2,614.3     $ (598.5 )     (23 )%
                                 
 
The significant components of our working capital are cash and cash equivalents, short-term investments and accounts receivable, reduced by accounts payable, accrued liabilities, debt and deferred revenue.
 
Working capital decreased $583.9 million from December 31, 2006 to December 31, 2007 primarily due to the decrease in cash, cash equivalents, and available-for-sale investments balance in the first and second quarters of 2007. Our total cash, cash equivalents, and available-for-sale investments decreased by $598.5 million during 2007 primarily due to stock repurchases under the 2006 Stock Repurchase Program discussed below. Additionally, because the debt related to our outstanding zero-coupon convertible notes is due within one year, we reclassified $399.5 million of debt underlying such notes from long-term to short-term liabilities and, as a result, further reduced our working capital. In 2007, we generated $786.5 million of cash from operations and $571.8 million from our investing activities. In addition, we received financing cash flows of $355.0 million from common stock issued to our employees through stock option exercises and employee stock purchase plan purchases. In 2007, we repurchased 69.4 million shares of our common stock for $1,623.2 million at an average purchase price of $23.37 per share. As of December 31, 2007, our 2006 Stock Repurchase Program had remaining authorized funds of $376.8 million. We may repurchase additional shares opportunistically under this program, subject to a review of circumstances at the time. See Note 15 in Item 8 for discussion of our stock repurchase activity in 2008.
 
In June 2007, we entered into a senior secured margin lending agreement with a third-party financial institution for a maximum credit facility of $400.0 million, or 90% of the fair market value of the underlying collateral, to establish a flexible draw down facility to fund additional stock repurchases, as necessary. This credit facility bore a floating interest rate equal to the three-month USD LIBOR plus 40 basis points per annum and, if utilized, would be secured by our publicly traded fixed income securities portfolio equivalent to 111% of any outstanding balance. This credit facility was terminated on September 26, 2007. We did not utilize this credit facility at any time.
 
Net accounts receivable increased $130.3 million, or 52%, to $379.8 million from December 31, 2006 to December 31, 2007 primarily due to an increase in revenue and shipment linearity. DSO was 42 days as of December 31, 2007 as compared to 38 days as of December 31, 2006. The increase in DSO was primarily a result of shipment linearity and the mix of customers we shipped to in the fourth quarter of 2007. Shipment linearity represents the rate at which products are shipped during a period. Our distributor financing program had minimal impact on DSO during 2007. Approximately $10.0 million of receivables sold under the distributor financing program had not been recognized in net revenues as of December 31, 2007 and therefore such amounts were recorded as debt financing in other accrued liabilities.
 
Deferred revenue increased $127.7 million or 33% to $513.3 million as of December 31, 2007 as compared to December 31, 2006. Product and service deferred revenue increased $43.2 million and $84.5 million, respectively, in 2007. Our product deferred revenue increased due to increases in the amount of product shipments not having met revenue recognition criteria and service deferred revenue increased due to an increase in the installed base of equipment under service contract.


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Liquidity and capital resources may also be impacted by acquisitions and investments in strategic relationships we may make in the networking equipment and information security markets. If we were to repurchase additional shares of our common stock under our 2006 Stock Repurchase Program, our liquidity may be impacted. Additionally, a portion of our cash and investment balance is held overseas and may be subject to U.S. taxes if repatriated.
 
Based on past performance and current expectations, we believe that our existing cash and cash equivalents, short-term and long-term investments, together with cash generated from operations as well as cash generated from the exercise of employee stock options and purchases under our employee stock purchase plan will be sufficient to fund our operations, repayment of outstanding debt, and growth. We believe our working capital is sufficient to meet our liquidity requirements for capital expenditures, commitments, repurchases of our common stock, and other liquidity requirements associated with our existing operations through at least the next 12 months.
 
However, our future capital requirements may vary materially from those now planned depending on many factors, including:
 
  •  the overall levels of sales of our products and gross profit margins;
 
  •  our business, product, capital expenditure and research and development plans;
 
  •  the market acceptance of our products;
 
  •  repurchases of our common stock;
 
  •  issuance and repayment of debt;
 
  •  litigation expenses, settlements and judgments;
 
  •  volume price discounts and customer rebates;
 
  •  the levels of accounts receivable that we maintain;
 
  •  acquisitions of other businesses, assets, products or technologies;
 
  •  changes in our compensation policies;
 
  •  capital improvements for new and existing facilities;
 
  •  technological advances;
 
  •  our competitors’ responses to our products;
 
  •  our relationships with suppliers and customers;
 
  •  expenses related to our future restructuring plans, if any;
 
  •  tax expense associated with stock-based awards;
 
  •  issuance of stock-based awards and the related payment in cash for withholding taxes in the current year and possibly during future years;
 
  •  the level of exercises of stock options and stock purchases under our equity incentive plans; and
 
  •  general economic conditions and specific conditions in our industry and markets, including the effects of international conflicts and related uncertainties.
 
Cash Requirements and Contractual Obligations
 
Our principal commitments primarily consist of obligations outstanding under the Zero Coupon Convertible Senior Notes due June 15, 2008 (“Senior Notes”), operating leases, purchase commitments, tax liabilities and other contractual obligations. The following table summarizes our principal contractual obligations as of December 31,


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2007 and the effect such obligations are expected to have on our liquidity and cash flow in future periods (in millions):
 
                                                 
          Less than
                More than
       
    Total     1 Year     1-3 Years     3-5 Years     5 Years     Other  
 
Operating leases, net of committed subleases(a)
  $ 221.3     $ 49.0     $ 117.2     $ 43.6     $ 11.5     $  
Senior Notes(b)
    399.5       399.5                          
Purchase commitments(c)
    102.8       102.8                          
Tax liabilities(d)
    41.5                                     41.5  
Other contractual obligations(e)
    44.4       21.9       22.5                    
                                                 
Total
  $ 809.5     $ 573.2     $ 139.7     $ 43.6     $ 11.5     $ 41.5  
                                                 
 
 
(a) Our contractual obligations under operating leases primarily relate to our leased facilities under our non-cancelable operating leases. Rent payments are allocated to costs and operating expenses in our consolidated statements of operations. We occupy approximately 1.8 million square feet world wide under operating leases. The majority of our office space is in North America, including our corporate headquarters in Sunnyvale, California. Our longest lease expires in May 2016.
 
(b) Our principal commitment as of December 31, 2007 was our outstanding Senior Notes due June 15, 2008. The Senior Notes were issued in June 2003 and are senior unsecured obligations, rank on parity in right of payment with all of our existing and future senior unsecured debt, and rank senior to all of our existing and future debt that expressly provides that it is subordinated to the notes. The Senior Notes bear no interest, but are convertible into shares of our common stock, subject to certain conditions, at any time prior to maturity or their prior repurchase by Juniper Networks. The conversion rate is 49.6512 shares per each $1,000 principal amount of convertible notes, subject to adjustment in certain circumstances. This is equivalent to a conversion price of approximately $20.14 per share. The carrying value of the Senior Notes as of December 31, 2007 was $399.5 million, which was included in current liabilities as the debt is due in less than one year.
 
(c) In order to reduce manufacturing lead times and ensure adequate component supply, our contract manufacturers place non-cancelable, non-returnable (“NCNR”) orders for components based on our build forecasts. As of December 31, 2007, there were NCNR component orders placed by our contract manufacturers with a value of $102.8 million. The contract manufacturers use the components to build products based on our forecasts and on purchase orders we have received from our customers. Generally, we do not own the components and title to the products transfers from the contract manufacturers to us and immediately to our customers upon delivery at a designated shipment location. If the components go unused or the products go unsold for specified periods of time, we may incur carrying charges or obsolete materials charges for components that our contract manufacturers purchased to build products to meet our forecast or customer orders. As of December 31, 2007, we had accrued $22.2 million based on our estimate of such charges.
 
(d) Tax liabilities include the long-term liabilities in the consolidated balance sheet for unrecognized tax positions. At this time, we are unable to make a reasonably reliable estimate of the timing of payments in individual years beyond 12 months due to uncertainties in the timing of tax audit outcomes.
 
(e) Other contractual obligations consist of the escrow amount of $2.2 million and bonus accrual of $0.7 million in connection with past acquisitions, a software subscription requiring payments of $5.0 million in both January 2008 and January 2009 and a joint development agreement requiring quarterly payments of $3.5 million through January 2010.


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Summary of Cash Flows
 
Operating Activities
 
Net cash provided by operating activities was $786.5 million, $755.6 million, and $642.9 million for 2007, 2006 and 2005, respectively. The cash provided by operating activities for each period was due to our net income (loss) adjusted by:
 
  •  Non-cash charges of $257.5 million, $1,536.4 million, and $307.4 million for 2007, 2006 and 2005, respectively, primarily related to depreciation and amortization expenses, stock-based compensation, tax benefit of employee stock option plans, in-process research and development from acquisitions, debt issuance costs, restructuring expense, and impairment charges. Non-cash charges in 2007 and 2006 were reduced by the excess tax benefit from stock-based compensation of $19.7 million and $9.7 million, respectively, and a gain on a minority equity investment of $6.7 million.
 
Non-cash charges in 2006 also included charges of $1,283.4 million related to the impairment of goodwill and intangible assets. In 2005 non-cash charges included $128.1 million of tax benefit from employee stock options. Beginning in 2006, tax benefit from employee stock options, in accordance with FAS 123R, are no longer included in cash flows from operations but rather are included in financing activities. Non-cash charges in 2005 also included an in-process research and development charge, a benefit from the reversal of NetScreen’s acquisition related liabilities and a loss due to the impairment of an equity investment, partially offset by gains associated with available-for-sale investments.
 
  •  Net changes in operating assets and liabilities of $168.2 million, $220.6 million, and $(15.1) million for 2007, 2006 and 2005, respectively, were generally generated in the normal course of business. These changes are highlighted as follows:
 
  •  Net cash increases in 2007 were primarily attributable to increases in accounts payable of $34.9 million, an increase in accrued compensation of $48.3 million, an increase in taxes payable of $71.4 million and an increase in deferred revenue of $127.7 million. The increase in accounts payable was due to the timing of payments to contract manufacturers and the growth of our business. The increase in accrued compensation was due to an increase in headcount, an increase in stock option exercises and the removal of the suspension on employee purchases of shares under ESPP. The increase in taxes payable was due to the increase in the tax provision, movement of deferred tax assets, and timing of payments. The increase in deferred revenue was due to the growing installed base and customer payments in advance of product acceptance. In addition, these increases in cash flows from operations were partially offset by a negative cash flow of $120.9 million primarily due to an increase in net accounts receivable in 2007, which was primarily due to the timing of shipments and the mix of customers who purchased our products, as we shipped a larger amount of products late in the fourth quarter of 2007 and such invoices would not come due until after December 31, 2007.
 
  •  Net cash increases in 2006 were primarily attributable to increases in deferred revenue of $132.8 million due to the growing installed base and customer payments in advance of product acceptance. The increase in operating cash flows was also due to the decreases in accounts receivable of $20.7 million and aggregate decreases in prepaid expenses, other current assets and other long-term assets of $23.0 million. Accounts payable increased $13.6 million and accrued compensation increased $12.7 million primarily due to the costs of headcount increases and related employee bonuses. Changes in taxes payable and other accrued liabilities contributed $18.3 million to cash flows from operations in 2006.
 
  •  Net cash used in 2005 from changes was primarily attributable to increases in net accounts receivable of $68.1 million and decreases in other accrued liabilities of $100.7 million and accrued warranty of $3.7 million, partially offset by decreases in the prepaid expenses, other current assets and other long-term assets accounts of $5.3 million, increases in income taxes payable of $26.6 million, increases in deferred revenue of $64.3 million, increases in accounts payable of $50.3 million and increases in accrued compensation of $10.9 million.


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Investing Activities
 
Net cash provided by investing activities was $571.8 million and $11.9 million for 2007 and 2006, respectively. Net cash used in investing activities was $583.7 million for 2005. Investing activities primarily included the purchases and sale or maturities of available-for-sale securities, the purchase and sale of equity investments, net cash used in acquisitions and capital expenditures.
 
Net sales and maturities of investments in available-for-sale securities were $1,029.1 million in 2007, compared to net sales and maturities of $632.1 million for 2006, as we used cash to fund our stock repurchase program described under the financing activities section below. Purchases of available-for-sale securities used $298.6 million in 2007 compared to $516.1 million in 2006 primarily due to the funding of our stock repurchase program and our investment strategy during 2007. Positive net cash flows of $115.9 million generated from the sales, maturities and purchases of available-for-sale securities in 2006 was primarily due to the increased cash and cash equivalent holdings as a result of higher short-term interest rates. Purchases and sales or maturities of available-for-sale securities used net cash of $131.0 million in 2005.
 
Capital expenditures increased $44.8 million to $146.9 million in 2007 and $3.9 million to $102.1 million in 2006 mainly to support new product developments and overseas expansions. Capital expenditures of $98.2 million in 2005 mainly used in support of new product developments, overseas expansions and business acquisitions. Cash flows related to restricted cash decreased by $27.9 million, from a cash inflow of $20.5 million in 2006 to a cash outflow of $7.4 million in 2007, primarily due to the funding to the D&O insurance trust to increase coverage due to the growth of our company. In 2005, we used cash of $309.9 million for the 2005 acquisitions, $34.8 million for restricted cash funding to escrow accounts in relation to the 2005 acquisitions, and $9.8 million for minority equity investment.
 
Financing Activities
 
Net cash used in financing activities was $1,238.5 million and $89.6 million for 2007 and 2006 respectively. In 2007 we repurchased 69.4 million shares of our common stock at an average price of $23.37 per share, or a total of $1,623.2 million. In 2006, we repurchased 10.1 million shares of our common stock at an average price of $18.51 per share, or a total of $186.4 million. In addition, cash was provided during both periods from the issuance of common stock related to employee option exercises and stock purchase plans for a total of $355.0 million and $87.1 million during 2007 and 2006, respectively. In 2007 and 2006, tax benefits of $19.7 million and $9.7 million, respectively, from tax deductions in excess of the expense recognized for employee stock options was presented as financing cash flows due to the adoption of FAS 123R, beginning on January 1, 2006. Tax deductions in excess of the expense recognized for employee stock options were included in operating cash flows in 2005 before the adoption of FAS 123R. Approximately $10.0 million of receivables sold under our distributor financing program had not been recognized as revenue as of December 31, 2007 and therefore such amounts were recorded as net borrowings under cash flows from financing activities.
 
Net cash provided by financing activities was $146.0 million in 2005 primarily due to common stock issued in relation to employee option exercises and purchases under our Employee Stock Purchase Plan.
 
Recent Accounting Pronouncements
 
See Note 1 to the Consolidated Financial Statements in Item 8 of Part II for a full description of recent accounting pronouncements, including the expected dates of adoption and estimated effects on results of operations and financial condition, which is incorporated herein by reference.
 
ITEM 7A.   Quantitative and Qualitative Disclosure about Market Risk
 
Interest Rate Risk
 
We maintain an investment portfolio of various holdings, types and maturities. In addition, a portion of our cash and marketable securities are held in non-U.S. domiciled countries. These securities are generally classified as available-for-sale and, consequently, are recorded on our consolidated balance sheet at fair value with unrealized gains or losses reported as a separate component of accumulated other comprehensive income (loss).


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At any time, a rise in interest rates could have a material adverse impact on the fair value of our investment portfolio. Conversely, declines in interest rates could have a material impact on interest earnings of our investment portfolio. We do not currently hedge these interest rate exposures.
 
The following tables present hypothetical changes in fair value of the financial instruments held at December 31, 2007 and 2006 that are sensitive to changes in interest rates (in millions):
 
                                                         
    Valuation of Securities Given an Interest
    Fair Value as of
    Valuation of Securities Given an Interest
 
    Rate Decrease of X Basis Points (BPS)     December 31,
    Rate Increase of X BPS  
    (150 BPS)     (100 BPS)     (50 BPS)     2007     50 BPS     100 BPS     150 BPS  
 
Government treasury and agencies
  $ 68.4     $ 68.1     $ 67.7     $ 67.4     $ 67.0     $ 66.7     $ 66.3  
Corporate bonds and notes
    108.3       107.5       106.7       105.9       105.1       104.3       103.5  
Other
    370.3       370.1       370.0       369.9       369.7       369.6       369.5  
                                                         
Total
  $ 547.0     $ 545.7     $ 544.4     $ 543.2     $ 541.8     $ 540.6     $ 539.3  
                                                         
 
                                                         
    Valuation of Securities Given an
                         
    Interest
    Fair Value as of
    Valuation of Securities Given an Interest
 
    Rate Decrease of X Basis Points (BPS)     December 31,
    Rate Increase of X BPS  
    (150 BPS)     (100 BPS)     (50 BPS)     2006     50 BPS     100 BPS     150 BPS  
 
Government treasury and agencies
  $ 297.5     $ 296.0     $ 294.5     $ 293.0     $ 291.6     $ 290.1     $ 288.6  
Corporate bonds and notes
    520.4       517.7       515.0       512.3       509.6       506.8       504.1  
Asset backed securities and other
    333.9       333.4       332.9       332.4       331.9       331.4       331.0  
                                                         
Total
  $ 1,151.8     $ 1,147.1     $ 1,142.4     $ 1,137.7     $ 1,133.1     $ 1,128.3     $ 1,123.7  
                                                         
 
These instruments are not leveraged and are held for purposes other than trading. The modeling technique used measures the changes in fair value arising from selected potential changes in interest rates. Market changes reflect immediate hypothetical parallel shifts in the yield curve of plus or minus 50 basis points (BPS), 100 BPS and 150 BPS, which are representative of the historical movements in the Federal Funds Rate.
 
Foreign Currency Risk and Foreign Exchange Forward Contracts
 
Periodically, we use derivatives to hedge against fluctuations in foreign exchange rates. We do not enter into derivatives for speculative or trading purposes.
 
We use foreign currency forward contracts to mitigate transaction gains and losses generated by certain foreign currency denominated monetary assets and liabilities. These derivatives are carried at fair value with changes recorded in other income (expense) in the same period as the changes in the fair value from the re-measurement of the underlying assets and liabilities. These foreign exchange contracts have maturities between one and two months.
 
Our sales and costs of revenues are primarily denominated in U.S. dollars. Our operating expenses are denominated in U.S. dollars as well as other foreign currencies including the British Pound, the Euro, Indian Rupee, and Japanese Yen. Periodically, we use foreign currency forward and/or option contracts to hedge certain forecasted foreign currency transactions relating to operating expenses. These derivatives are designated as cash flow hedges and have maturities of less than one year. The effective portion of the derivative’s gain or loss is initially reported as a component of accumulated other comprehensive income and, upon occurrence of the forecasted transaction, is subsequently reclassified into the consolidated statements of operations line item to which the hedged transaction relates. We record any ineffectiveness of the hedging instruments, which was immaterial during the years ended December 31, 2007, 2006 and 2005, respectively, in other income (expense) on our consolidated statements of operations. The increase in operating expenses including research and development, sales and marketing, as well as general and administrative expenses, due to foreign currency fluctuations, net of hedging, was approximately 2% in 2007.


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Equity Price Risk
 
Our portfolio of publicly-traded equity securities is inherently exposed to equity price risk as the stock market fluctuates. We monitor our equity investments for impairment on a periodic basis. In the event that the carrying value of the equity investments exceeds its fair value, and we determine the decline in value to be other than temporary, we reduce the carrying value to its current fair value. We do not purchase our equity securities with the intent to use them for trading or speculative purposes. The aggregate fair value of our marketable equity securities was $8.6 million and $0.8 million as of December 31, 2007 and 2006, respectively. A hypothetical 30% adverse change in the stock prices of our portfolio of publicly-traded equity securities would result in an immaterial loss.
 
In addition to publicly-traded securities, we have also invested in privately-held companies. These investments are carried at cost. The aggregate cost of our investments in privately-held companies was $23.3 million and $20.4 million as of December 31, 2007 and 2006, respectively.


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ITEM 8.   Consolidated Financial Statements and Supplementary Data
 
Management’s Annual Report on Internal Control Over Financial Reporting
 
Juniper Networks Inc.’s management is responsible for establishing and maintaining adequate internal control over the company’s financial reporting. We assessed the effectiveness of the company’s internal control over financial reporting as of December 31, 2007. In making this assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control — Integrated Framework.
 
Based on our assessment using those criteria, we concluded that, as of December 31, 2007, Juniper Networks Inc.’s internal control over financial reporting was effective.
 
Our independent registered public accounting firm, Ernst & Young LLP, independently assessed the effectiveness of the company’s internal control over financial reporting. Ernst & Young has issued an attestation report concurring with management’s assessment, which is included on page 65 of this Form 10-K.
 
Please note that there are inherent limitations in the effectiveness of any system of internal control, including the possibility of human error and the circumvention or overriding of controls. Accordingly, even effective internal controls can provide only reasonable assurances with respect to financial statement preparation. Further, because of changes in conditions, the effectiveness of internal control may vary over time.
 


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Report of Independent Registered Public Accounting Firm
 
The Board of Directors and Stockholders of Juniper Networks, Inc.
 
We have audited the accompanying consolidated balance sheets of Juniper Networks, Inc. as of December 31, 2007 and 2006, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2007. Our audits also included the financial statement schedule listed in the Index at Item 15(a). These financial statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.
 
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
 
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Juniper Networks, Inc. at December 31, 2007 and 2006, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2007, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, present fairly in all material respects, the information set forth therein.
 
As discussed in Note 1 to the Consolidated Financial Statements, Juniper Networks, Inc. changed its method of accounting for stock-based compensation as of January 1, 2006, and its method of accounting for uncertain tax positions as of January 1, 2007.
 
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of Juniper Networks, Inc.’s internal control over financial reporting as of December 31, 2007, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2008 expressed an unqualified opinion thereon.
 
/s/  Ernst & Young LLP
 
San Jose, California
February 28, 2008


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Report of Independent Registered Public Accounting Firm
 
The Board of Directors and Stockholders of Juniper Networks, Inc.
 
We have audited Juniper Network, Inc.’s internal control over financial reporting as of December 31, 2007, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Juniper Networks, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.
 
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
 
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
 
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
 
In our opinion, Juniper Networks, Inc. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2007, based on the COSO criteria.
 
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the accompanying consolidated balance sheets as of December 31, 2007 and 2006, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2007 of Juniper Networks, Inc. and our report dated February 28, 2008 expressed an unqualified opinion thereon.
 
/s/  Ernst & Young LLP
 
San Jose, California
February 28, 2008


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Juniper Networks, Inc.
 
Consolidated Statements of Operations
 
                         
    Years Ended December 31,  
    2007     2006     2005  
    (In thousands, except per share amounts)  
 
Net revenues:
                       
Product
  $ 2,326,983     $ 1,893,328     $ 1,770,988  
Service
    509,105       410,252       292,969  
                         
Total net revenues
    2,836,088       2,303,580       2,063,957  
Cost of revenues:
                       
Product
    676,258       555,077       506,296  
Service
    251,380       199,213       147,161  
                         
Total cost of revenues
    927,638       754,290       653,457  
                         
Gross margin
    1,908,450       1,549,290       1,410,500  
Operating expenses:
                       
Research and development
    622,961       480,247       357,284  
Sales and marketing
    666,688       557,990       441,596  
General and administrative
    116,489       97,077       74,982  
Amortization of purchased intangibles
    85,896       91,823       85,174  
Impairment of goodwill and intangibles
          1,283,421       5,944  
In-process research and development
                11,000  
Other charges, net
    9,354       36,514       (6,526 )
                         
Total operating expenses
    1,501,388       2,547,072       969,454  
                         
Operating income (loss)
    407,062       (997,782 )     441,046  
Interest and other income, net
    96,776       100,733       55,220  
Gain on investments, net
    6,745             1,250  
                         
Income (loss) before income taxes
    510,583       (897,049 )     497,516  
Provision for income taxes
    149,753       104,388       146,815  
                         
Net income (loss)
  $ 360,830     $ (1,001,437 )   $ 350,701  
                         
Net income (loss) per share:
                       
Basic
  $ 0.67     $ (1.76 )   $ 0.63  
                         
Diluted
  $ 0.62     $ (1.76 )   $ 0.58  
                         
Shares used in computing net income (loss) per share:
                       
Basic
    537,767       567,454       554,223  
                         
Diluted
    579,145       567,454       600,189  
                         
 
See accompanying Notes Consolidated Financial Statements


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Juniper Networks, Inc.
 
Consolidated Balance Sheets
 
                 
    December 31,  
    2007     2006  
    (In thousands, except par values)  
 
ASSETS
Current assets:
               
Cash and cash equivalents
  $ 1,716,110     $ 1,596,333  
Short-term investments
    240,355       443,910  
Accounts receivable, net of allowance for doubtful accounts of $8,323 for 2007 and $7,255 for 2006
    379,759       249,445  
Deferred tax assets, net
    171,598       179,989  
Prepaid expenses and other current assets
    47,293       52,129  
                 
Total current assets
    2,555,115       2,521,806  
Property and equipment, net
    401,818       349,930  
Long-term investments
    59,329       574,061  
Restricted cash
    35,515       45,610  
Goodwill
    3,658,602       3,624,652  
Purchased intangible assets, net
    77,844       169,202  
Long-term deferred tax assets, net
    59,025       51,499  
Other long-term assets
    38,158       31,635  
                 
Total assets
  $ 6,885,406     $ 7,368,395  
                 
 
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
               
Accounts payable
  $ 219,101     $ 179,553  
Accrued compensation
    158,710       110,451  
Accrued warranty
    37,450       34,828  
Deferred revenue
    425,579       312,253  
Income taxes payable
    52,324       38,499  
Convertible debt
    399,496        
Other accrued liabilities
    87,183       87,033  
                 
Total current liabilities
    1,379,843       762,617  
Long-term deferred revenue
    87,690       73,326  
Long-term income tax payable
    41,482        
Other long-term liabilities
    22,531       17,424  
Long-term convertible debt
          399,944  
Commitments and contingencies
               
Stockholders’ equity:
               
Convertible preferred stock, $0.00001 par value; 10,000 shares authorized; none issued and outstanding
           
Common stock, $0.00001 par value, 1,000,000 shares authorized; 522,815 and 569,234 shares issued and outstanding at December 31, 2007 and 2006, respectively
    5       6  
Additional paid-in capital
    8,154,932       7,646,047  
Accumulated other comprehensive income
    12,251       1,266  
Accumulated deficit
    (2,813,328 )     (1,532,235 )
                 
Total stockholders’ equity
    5,353,860       6,115,084  
                 
Total liabilities and stockholders’ equity
  $ 6,885,406     $ 7,368,395  
                 
 
See accompanying Notes Consolidated Financial Statements


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Juniper Networks, Inc.
 
Consolidated Statements of Cash Flows
 
                         
    Years Ended December 31,  
    2007     2006     2005  
          (In thousands)        
 
OPERATING ACTIVITIES:
                       
Net income (loss)
  $ 360,830     $ (1,001,437 )   $ 350,701  
Adjustments to reconcile net income (loss) to net cash from operating activities:
                       
Depreciation and amortization
    193,166       173,490       138,904  
Stock-based compensation
    87,990       87,645       22,320  
Non-cash portion of debt issuance costs and disposal of property and equipment
    2,765       1,512       1,735  
Restructuring, impairments, and special charges
          1,283,421       5,620  
In-process research and development
                11,000  
Gain on and write-down of investments
    (6,745 )           (364 )
Tax benefit of employee stock option plans
                128,140  
Excess tax benefit from employee stock option plans
    (19,686 )     (9,650 )      
Changes in operating assets and liabilities:
                       
Accounts receivable, net
    (120,904 )     20,745       (68,053 )
Prepaid expenses, other current assets and other long-term assets
    10,719       22,969       5,308  
Accounts payable
    34,938       13,644       50,310  
Accrued compensation
    48,259       12,712       10,901  
Accrued warranty
    2,622       (514 )     (3,723 )
Income taxes payable
    71,403       8,934       26,566  
Other accrued liabilities
    (6,524 )     9,367       (100,702 )
Deferred revenue
    127,690       132,766       64,280  
                         
Net cash provided by operating activities
    786,523       755,604       642,943  
INVESTING ACTIVITIES:
                       
Purchases of property and equipment
    (146,858 )     (102,093 )     (98,192 )
Purchases of available-for-sale investments
    (298,615 )     (516,144 )     (936,031 )
Maturities and sales of available-for-sale investments
    1,029,081       632,075       805,047  
(Decrease) increase in restricted cash
    (7,407 )     20,464       (34,848 )
Minority equity investments
    (4,075 )     (7,274 )     (9,823 )
Payments made in connection with business acquisitions, net
    (375 )     (15,102 )     (309,889 )
                         
Net cash provided by (used in) investing activities
    571,751       11,926       (583,736 )
FINANCING ACTIVITIES:
                       
Proceeds from issuance of common stock
    355,007       87,140       146,029  
Retirement of common stock
    (1,623,190 )     (186,388 )     (17 )
Excess tax benefit from employee stock option plans
    19,686       9,650        
Net proceeds from distributor financing arrangement
    10,000              
                         
Net cash (used in) provided by financing activities
    (1,238,497 )     (89,598 )     146,012  
                         
Net increase in cash and cash equivalents
    119,777       677,932       205,219  
Cash and cash equivalents at beginning of period
    1,596,333       918,401       713,182  
                         
Cash and cash equivalents at end of period
  $ 1,716,110     $ 1,596,333     $ 918,401  
                         
Supplemental Disclosures of Cash Flow Information:
                       
Cash paid for interest
  $ 1,495     $     $  
Cash paid for taxes
    57,856       64,005       27,764  
Supplemental Schedule of Non-Cash Investing and Financing Activities:
                       
Common stock issued in connection with business combinations
  $     $     $ 221,221  
Stock options assumed in connection with business combinations
                65,185  
Deferred stock compensation in connection with business combinations
                19,035  
Common stock issued in connection with conversion of the Senior Notes
    448       15       41  
 
See accompanying Notes Consolidated Financial Statements


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Juniper Networks, Inc.
 
Consolidated Statements of Stockholders’ Equity
 
                                                         
                            Accumulated
             
                            Other
          Total
 
    Common Stock     Additional
    Deferred Stock
    Comprehensive
    Accumulated
    Stockholders’
 
    Shares     Amount     Paid-In Capital     Compensation     Income (loss)     Deficit     Equity  
    (In thousands)  
 
Balance at December 31, 2004
    540,526     $ 5     $ 6,710,325     $ (40,171 )   $ (716 )   $ (695,111 )   $ 5,974,332  
Issuance of shares in connection with Employee Stock Purchase Plan
    912             18,262                         18,262  
Exercise of stock options by employees, net of repurchases
    15,466       1       127,766                         127,767  
Issuance of shares in connection with acquisitions
    11,345             286,406       (19,035 )                 267,371  
Issuance of shares in connection with conversion of the Zero Coupon Convertible Senior Notes
    2             41                         41  
Retirement of common stock
    (8 )           (17 )                       (17 )
Stock-based compensation
                (19,186 )     41,506                   22,320  
Tax benefit from employee stock option plans
                128,140                         128,140  
Tax benefit from options assumed in acquisitions and reversal of deferred tax assets valuation allowance
                212,885                         212,885  
Tax benefit from options assumed in acquisitions
                (5,960 )                       (5,960 )
Other comprehensive income:
                                                       
Change in unrealized loss on investments, net
                            (3,983 )           (3,983 )
Foreign currency translation losses, net
                            (3,625 )           (3,625 )
Net income
                                  350,701       350,701  
                                                         
Comprehensive income
                                                    343,093  
                                                         
Balance at December 31, 2005
    568,243       6       7,458,662       (17,700 )     (8,324 )     (344,410 )     7,088,234  
Elimination of unearned deferred compensation upon adoption of FAS 123R
                (17,700 )     17,700                    
Issuance of shares in connection with Employee Stock Purchase Plan
    1,748             22,831                         22,831  
Exercise of stock options by employees, net of repurchases
    9,313             64,309                         64,309  
Release of escrow
                10,343                         10,343  
Elimination of additional paid-in capital in connection with modification of stock options
                (6,114 )                       (6,114 )
Issuance of shares in connection with conversion of the convertible senior notes
    1             15                         15  
Repurchase and retirement of common stock
    (10,071 )                             (186,388 )     (186,388 )
Stock-based compensation expense
                87,645                         87,645  
Tax benefit from employee stock option plans
                19,890                         19,890  
Adjustment to deferred tax liabilities in connection with elimination of unearned deferred compensation balance and other
                6,166                         6,166  
Other comprehensive income (loss):
                                                       
Change in unrealized gain on investments, net
                            5,199             5,199  
Foreign currency translation gains, net
                            4,391             4,391  
Net loss
                                  (1,001,437 )     (1,001,437 )
                                                         
Comprehensive loss
                                                    (991,847 )
                                                         
Balance at December 31, 2006
    569,234       6       7,646,047             1,266       (1,532,235 )     6,115,084  
Cumulative effect from the adoption of FIN 48
                                  (19,195 )     (19,195 )
Issuance of shares in connection with Employee Stock Purchase Plan
    615             10,502                         10,502  
Exercise of stock options by employees, net of repurchases
    22,399             345,585                         345,585  
Release of escrow related to an acquisitions, net of cancelled escrow shares
    (15 )           14,840                         14,840  
Issuance of shares in connection with vesting of restricted share units
    3                                      
Issuance of shares in connection with conversion of the convertible senior notes
    22             448                         448  
Repurchase and retirement of common stock
    (69,443 )     (1 )     (461 )                 (1,622,728 )     (1,623,190 )
Stock-based compensation expense
                94,453                         94,453  
Tax benefit from employee stock option plans
                43,518                         43,518  
Other comprehensive income:
                                                       
Change in unrealized gain on investments, net
                            3,169             3,169  
Foreign currency translation gains, net
                            7,816             7,816  
Net income
                                  360,830       360,830  
                                                         
Comprehensive income
                                                    371,815  
                                                         
Balance at December 31, 2007
    522,815     $ 5     $ 8,154,932     $     $ 12,251     $ (2,813,328 )   $ 5,353,860  
                                                         
 
See accompanying Notes Consolidated Financial Statements


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements
 
Note 1.   Description of Business
 
Juniper Networks, Inc. (“Juniper Networks” or the “Company”) designs, develops and sells products and services that together provide its customers with high-performance network infrastructure that creates responsive and trusted environments for accelerating the deployment of services and applications over a single Internet Protocol (“IP”)-based network. The Company organizes its business groups into the following three reportable segments: Infrastructure, Service Layer Technologies (“SLT”), and Service. The Company’s Infrastructure segment primarily offers scalable router products that are used to control and direct network traffic. The Company’s SLT segment offers networking solutions that meet a broad array of its customers’ priorities, from securing the network and the data on the network, to maximizing existing bandwidth and acceleration of applications across a distributed network. Together, these elements provide secure networking solutions to enable customers to convert legacy networks that provide commoditized, best efforts services into more valuable assets that provide differentiation, value and increased reliability, performance and security to end users. The Company’s Service segment delivers world-wide services, including technical support and professional services, as well as a number of education and training programs, to customers of the Infrastructure and SLT segments.
 
Basis of Presentation
 
The Consolidated Financial Statements include the Company and its wholly-owned subsidiaries. All inter-company balances and transactions have been eliminated.
 
Use of Estimates
 
The preparation of the financial statements and related disclosures in conformity with accounting principles generally accepted in the United States requires management to make estimates and judgments that affect the amounts reported in the Consolidated Financial Statements and accompanying notes. Estimates are used for revenue recognition, allowance for sales returns, allowance for doubtful accounts, allowance for contract manufacturer obligations, allowance for warranty costs, stock-based compensation, goodwill and other impairments, income taxes, litigation and settlement costs, and other loss contingencies. The Company bases its estimates on historical experience and also on assumptions that it believes are reasonable. Actual results experienced by the Company may differ materially from management’s estimates.
 
Cash and Cash Equivalents
 
All highly liquid investments purchased with an original maturity of three months or less are classified as cash and cash equivalents. Cash and cash equivalents consist of cash on hand, balances with banks, and highly liquid investments in money market funds, commercial paper, government securities, certificates of deposit, and corporate debt securities.
 
Investments
 
Management determines the appropriate classification of securities at the time of purchase and reevaluates such classification as of each balance sheet date. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in the Consolidated Statements of Operations. The Company’s investments in publicly traded equity securities are classified as available-for-sale. Available-for-sale investments are initially recorded at cost and periodically adjusted to fair value through comprehensive income (loss).
 
Equity Investments
 
Juniper Networks has investments in privately held companies. These investments are included in other long-term assets in the Consolidated Balance Sheets and are carried at cost, adjusted for any impairment, as the Company


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
does not have a controlling interest and does not have the ability to exercise significant influence over these companies. These investments are inherently high risk as the market for technologies or products manufactured by these companies are usually early stage at the time of the investment by Juniper Networks and such markets may never be significant. The Company monitors these investments for impairment by considering financial, operational and economic data and makes appropriate reductions in carrying values when necessary.
 
Fair Value of Financial Instruments
 
The carrying value of the Company’s financial instruments including cash and cash equivalents, accounts receivable, accrued compensation, and other accrued liabilities, approximates fair market value due to the relatively short period of time to maturity. The fair value of investments is determined using quoted market prices for those securities or similar financial instruments.
 
Concentrations
 
Financial instruments that subject Juniper Networks to concentrations of credit risk consist primarily of cash and cash equivalents, investments and accounts receivable. Juniper Networks maintains its cash and cash equivalents and investments in fixed income securities with high-quality institutions and only invests in high quality credit instruments. Deposits held with banks, including those held in foreign branches of global banks, may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand and therefore bear minimal risk.
 
Generally, credit risk with respect to accounts receivable is diversified due to the number of entities comprising the Company’s customer base and their dispersion across different geographic locations throughout the world. Juniper Networks performs ongoing credit evaluations of its customers and generally does not require collateral on accounts receivable. Juniper Networks maintains reserves for potential credit losses and historically such losses have been within management’s expectations. One customer accounted for 12.8%, 14.3% and 13.7% of total net revenues during 2007, 2006 and 2005, respectively.
 
The Company relies on sole suppliers for certain of its components such as application-specific integrated circuits (“ASICs”) and custom sheet metal. Additionally, Juniper Networks relies primarily on a limited number of significant independent contract manufacturers for the production of all of its products. The inability of any supplier or manufacturer to fulfill supply requirements of Juniper Networks could negatively impact future operating results.
 
Property and Equipment
 
Property and equipment are recorded at cost less accumulated depreciation. Depreciation is calculated using the straight-line method over the lesser of the estimated useful life, generally three to five years, or the lease term of the respective assets. The Company depreciates leasehold improvements over the life of the lease or the respective assets, whichever is shorter. Land is not subject to depreciation.
 
Goodwill and Purchased Intangible Assets
 
Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. Identifiable intangible assets are comprised of purchased trademarks, developed technologies, customer and maintenance contracts, and other intangible assets. Goodwill is not subject to amortization but is subject to annual assessment, at a minimum, for impairment by applying a fair-value based test. Future goodwill impairment tests could result in a charge to earnings. Purchased intangible assets with finite lives are amortized on a straight-line basis over their respective estimated useful lives ranging from two to nineteen years.


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
Impairment
 
The Company evaluates long-lived assets held-for-use for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An asset is considered impaired if its carrying amount exceeds the future net cash flow the asset is expected to generate. If an asset is considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair market value. The Company assesses the recoverability of its long-lived and intangible assets by determining whether the unamortized balances can be recovered through undiscounted future net cash flows of the related assets. The amount of impairment, if any, is measured based on projected discounted future net cash flows.
 
The Company evaluates goodwill, at a minimum, on an annual basis and whenever events and changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Impairment of goodwill is tested at the reporting unit level by comparing the reporting unit’s carrying value, including goodwill, to the fair value of the reporting unit. The fair values of the reporting units are estimated using a combination of the income, or discounted cash flows, approach and the market approach, which utilizes comparable companies’ data. If the carrying value of the reporting unit exceeds the fair value, goodwill is considered impaired and a second step is performed to measure the amount of the impairment loss, if any. As discussed in Note 3, in the second quarter of 2006 the Company concluded that the carrying value of goodwill was impaired and recorded an impairment charge. After recording the impairment charge, Juniper Networks conducted its annual impairment test as of November 1, 2006 and November 1, 2007 and determined that the carrying value of the remaining goodwill was not impaired. There were no events or circumstances from November 1, 2007 through December 31, 2007 that would impact this assessment. Future impairment indicators, including declines in the Company’s market capitalization or a decrease in revenue or profitability levels, could require additional impairment charges to be recorded.
 
Revenue Recognition
 
Juniper Networks sells products and services through its direct sales force and through its strategic distribution relationships and value-added resellers. The Company’s products are integrated with software that is essential to the functionality of the equipment. Additionally, the Company provides unspecified upgrades and enhancements related to the integrated software through maintenance contracts for most of its products. Accordingly, the Company accounts for revenue in accordance with Statement of Position No. 97-2, Software Revenue Recognition, and all related interpretations. The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery or performance has occurred, the sales price is fixed or determinable and collectibility is reasonably assured. Evidence of an arrangement generally consists of customer purchase orders and, in certain instances, sales contracts or agreements. Shipping terms and related documents, or written evidence of customer acceptance, when applicable, are used to verify delivery or performance. In instances where the Company has outstanding obligations related to product delivery or the final acceptance of the product, revenue is deferred until all the delivery and acceptance criteria have been met. The Company assesses whether the sales price is fixed or determinable based on payment terms and whether the sales price is subject to refund or adjustment. Collectibility is assessed based on the creditworthiness of the customer as determined by credit checks and the customer’s payment history to the Company. Accounts receivable are recorded net of allowance for doubtful accounts, estimated customer returns and pricing credits.
 
For arrangements with multiple elements, such as sales of products that include services, the Company allocates revenue to each element using the residual method based on vendor specific objective evidence of fair value of the undelivered items. Under the residual method, the amount of revenue allocated to delivered elements equals the total arrangement consideration less the aggregate fair value of any undelivered elements. Vendor specific objective evidence of fair value is based on the price charged when the element is sold separately. If vendor specific objective evidence of fair value of one or more undelivered items does not exist, revenue is deferred and recognized at the earlier of (i) delivery of those elements or (ii) when fair value can be established unless


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
maintenance is the only undelivered element, in which case, the entire arrangement fee is recognized ratably over the contractual support period. For multiple agreements with a single customer, the Company accounts for them as either one arrangement or separate arrangements depending on their interdependency.
 
For sales to direct end-users and value-added resellers, the Company recognizes product revenue upon transfer of title and risk of loss, which is generally upon shipment. It is the Company’s practice to identify an end-user prior to shipment to a value-added reseller. For end-users and value-added resellers, the Company has no significant obligations for future performance such as rights of return or pricing credits. A portion of the Company’s sales are made through distributors under agreements allowing for pricing credits and/or rights of return. Product revenue on sales made through these distributors is recognized upon sell-through as reported by the distributors to the Company. The Company sells certain interests in accounts receivables on a non-recourse basis as part of a distributor accounts receivable financing arrangement which was established by the Company with a major financing company. Accounts receivables sold under this arrangement in advance of revenue recognition are accounted for as debt and had a balance of $10.0 million and nil as of December 31, 2007 and 2006, respectively. Deferred revenue on shipments to distributors reflects the effects of distributor pricing credits and the amount of gross margin expected to be realized upon sell — through. Deferred revenue is recorded net of the related product costs of revenue.
 
The Company records reductions to revenue for estimated product returns and pricing adjustments, such as rebates and price protection, in the same period that the related revenue is recorded. The amount of these reductions is based on historical sales returns and price protection credits, specific criteria included in rebate agreements, and other factors known at the time. In addition, the Company reports revenue net of sales taxes.
 
Shipping charges billed to customers are included in product revenue and the related shipping costs are included in cost of product revenues. Costs associated with cooperative advertising programs are estimated and recorded as a reduction of revenue at the time the related sales are recognized.
 
Services include maintenance, training and professional services. In addition to providing unspecified upgrades and enhancements on a when and if available basis, the Company’s maintenance contracts include 24-hour technical support, and hardware repair and replacement parts. Maintenance is offered under renewable contracts. Revenue from maintenance contracts is deferred and is generally recognized ratably over the contractual support period, which is generally one to three years. Revenue from training and professional services is recognized as the services are completed or ratably over the contractual period, which is generally one year or less.
 
Allowance for Doubtful Accounts
 
The allowance for doubtful accounts is based on the Company’s assessment of the collectibility of customer accounts. Juniper Networks regularly reviews its receivables that remain outstanding past their applicable payment terms and establishes allowance and potential write-offs by considering factors such as historical experience, credit quality, age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay.
 
Warranties
 
Juniper Networks generally offers a one-year warranty on all of its hardware products and a 90-day warranty on the media that contains the software embedded in the products. The warranty generally includes parts and labor obtained through the Company’s 24-hour service center. On occasion, the specific terms and conditions of those warranties vary. The Company accrues for warranty costs based on estimates of the costs that may be incurred under its warranty obligations, including material costs, technical support labor costs and associated overhead. The warranty accrual is included in the Company’s cost of revenues and is recorded at the time revenue is recognized. Factors that affect the Company’s warranty liability include the number of installed units, its estimates of anticipated rates of warranty claims, costs per claim and estimated support labor costs and the associated overhead.


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.
 
Contract Manufacturer Liabilities and Inventories
 
The Company outsources most of its manufacturing, repair and supply chain management operations to its independent contract manufacturers and a significant portion of its cost of revenues consists of payments to them. Its independent contract manufacturers procure components and manufacture the Company’s products based on the Company’s demand forecasts. These forecasts are based on the Company’s estimates of future demand for the Company products, which are in turn based on historical trends and an analysis from the Company’s sales and marketing organizations, adjusted for overall market conditions. The Company establishes accrued liabilities, included in other current accrued liabilities on the accompanying consolidated balance sheets, for carrying charges and obsolete material charges for excess components purchased based on historical trends.
 
In addition, the Company purchases a small amount of strategic component inventory, which is included in other assets, and stated at the lower of cost or market. The costs of distributor inventory not yet recognized as revenue is recorded net of the related product revenue. Service related spares and demonstration equipment are expensed to costs of service revenue and sales and marketing expense, respectively, when purchased.
 
Research and Development
 
Costs to research, design, and develop the Company’s products are expensed as incurred. Software development costs are capitalized beginning when a product’s technological feasibility has been established and ending when a product is available for general release to customers. Generally, Juniper Networks’ products are released soon after technological feasibility has been established. As a result, costs subsequent to achieving technological feasibility have not been significant and all software development costs have been expensed as incurred.
 
Advertising
 
Advertising costs are charged to sales and marketing expense as incurred. Advertising expense was $4.8 million, $6.8 million, and $6.6 million, for 2007, 2006 and 2005, respectively.
 
Loss Contingencies
 
The Company is subject to the possibility of various loss contingencies arising in the ordinary course of business. It considers the likelihood of loss or impairment of an asset or the incurrence of a liability, as well as its ability to reasonably estimate the amount of loss, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that an asset has been impaired or a liability has been incurred and the amount of loss can be reasonably estimated. The Company regularly evaluates current information available to its management to determine whether such accruals should be adjusted and whether new accruals are required.
 
In addition, from time to time, the Company is involved in disputes, litigation and other legal actions. The Company records a charge equal to at least the minimum estimated liability for a loss contingency only when both of the following conditions are met: (i) information available prior to issuance of the financial statements indicates that it is probable that an asset had been impaired or a liability had been incurred at the date of the financial statements and (ii) the range of loss can be reasonably estimated. However the actual liability in any such litigation may be materially different from the Company’s estimates, which could result in the need to record additional expenses.
 
Stock-Based Compensation
 
On January 1, 2006, the Company adopted Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment, (“FAS 123R”) which requires the measurement and recognition of compensation expense for all


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
stock-based awards made to employees and directors including employee stock options, restricted stock units (“RSUs”) and purchases under the Company’s Employee Stock Purchase Plan based on estimated fair values. FAS 123R supersedes the previous accounting under Accounting Principles Board Opinion No. 25, Accounting for Stock Issued to Employees (“APB 25”), as allowed under Statement of Financial Accounting Standards No. 123, Accounting for Stock-Based Compensation (“FAS 123”), for periods beginning in 2006. In March 2005, the Securities and Exchange Commission (“SEC”) issued Staff Accounting Bulletin No. 107 (“SAB 107”) relating to FAS 123R. The Company has applied the provisions of SAB 107 in conjunction with its adoption of FAS 123R.
 
The Company adopted FAS 123R using the modified prospective transition method, which requires the application of the accounting standard as of January 1, 2006, the first day of the Company’s fiscal 2006. FAS 123R requires companies to estimate the fair value of stock-based awards on the date of grant using an option-pricing model. The Company uses the Black-Scholes-Merton option pricing model to determine the fair value of stock options under FAS 123R, consistent with that used for pro forma disclosures under FAS 123. The fair value of an RSU is equivalent to the market price of the Company’s common stock on the grant date. The value of the portion of the stock-based award that is ultimately expected to vest is recognized as expense over the requisite service periods, or in the period of grant if the requisite service period has been provided, in the Company’s Consolidated Statement of Operations.
 
The Company’s Consolidated Financial Statements as of and for the years ended December 31, 2007 and 2006 reflect the impact of FAS 123R. In accordance with the modified prospective transition method, the Company’s consolidated financial statements for 2005 have not been restated to reflect, and do not include, the impact of FAS 123R.
 
Stock-based compensation expense recognized in the Company’s consolidated statement of operations for the years ended December 31, 2007 and 2006 included (i) compensation expense for stock-based awards granted prior to, but not yet vested as of, December 31, 2005 based on the grant date fair value estimated in accordance with the provisions of FAS 123 and (ii) compensation expense for the stock-based awards granted subsequent to December 31, 2005 based on the grant date fair value estimated in accordance with the provisions of FAS 123R. In conjunction with the adoption of FAS 123R, the Company changed its accounting policy of attributing the fair value of stock-based compensation to expense from the accelerated multiple-option approach provided by APB 25, as allowed under FAS 123, to the straight-line single-option approach, as allowed under FAS 123R. Compensation expense for all expected-to-vest stock-based awards that were granted on or prior to December 31, 2005 will continue to be recognized using the accelerated attribution method. Compensation expense for all expected-to-vest stock-based awards that were granted or modified subsequent to December 31, 2005 is recognized on a straight-line basis provided that the amount of compensation cost recognized at any date is no less than the portion of the grant-date value of the award that is vested at that date. FAS 123R requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. In the Company’s stock-based compensation expense required under APB 25 and the pro forma information required under FAS 123 for 2005, the Company accounted for forfeitures as they occurred.
 
Prior to the adoption of FAS 123R, stock-based compensation expense was recognized in the Company’s consolidated statement of operations under the provisions of APB 25. In accordance with APB 25, no compensation expense was required for the employee stock purchases under the Company’s Employee Stock Purchase Plan. Stock-based compensation expense of $22.3 million for 2005 was related to employee stock-based awards and stock options assumed from acquisitions. As a result of adopting FAS 123R, stock-based compensation expense recorded for 2007 and 2006 was $88.0 million and $87.6 million, respectively. Stock-based compensation under FAS 123R for 2006, the year of adoption, was approximately $74.4 million higher than that which would have been reported had the Company continued to account for stock-based compensation under APB 25. Net income for 2006 was approximately $51.4 million lower than that which would have been reported had the Company continued to account for stock-based compensation under APB 25. Unamortized deferred compensation associated with stock options assumed from past acquisitions and employee stock-based awards of $17.7 million has been reclassified to additional paid-in capital in the Company’s consolidated balance sheet upon the adoption of FAS 123R on January 1, 2006. Additional information is discussed in Note 9, “Stockholders’ Equity.”


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
In accordance with FAS 123R, the Company has presented as financing cash flows the tax benefits resulting from tax deductions in excess of the compensation cost recognized for those options beginning in 2006. Tax benefits from employee stock plans of $19.7 million and $9.7 million, which related to tax deductions in excess of the compensation cost recognized, were presented as financing cash flows for 2007 and 2006, respectively. Prior to the adoption of FAS 123R, tax benefits from employee stock plans were presented as operating cash flows. Additionally, in accordance with FAS 123R, FAS No. 109, Accounting for Income Taxes (“FAS 109”), and EITF Topic D-32, Intra-period Tax Allocation of the Effect of Pretax Income from Continuing Operations, the Company has elected to recognize excess income tax benefits from stock option exercises in additional paid-in capital only if an incremental income tax benefit would be realized after considering all other tax attributes presently available to the Company.
 
The following table summarizes the pro forma net income and earnings per share, net of related tax effect, had the Company applied the fair value recognition provisions of FAS 123 to employee stock benefits in 2005 (in millions, except per share amounts):
 
                 
    Year Ended
       
    December 31,
       
    2005        
 
Net income as reported
  $ 350.7          
Add: amortization of deferred stock compensation included in reported net income, net of tax
    14.2          
Deduct: total stock-based employee compensation expense determined under fair value based method, net of tax
    (229.6 )        
                 
Pro forma net income
  $ 135.3          
                 
Basic net income per share:
               
As reported
  $ 0.63          
Pro forma
  $ 0.24          
Diluted net income per share:
               
As reported
  $ 0.58          
Pro forma
  $ 0.22          
 
Derivatives
 
Periodically, the Company uses derivatives to partially offset its market exposure to fluctuations in foreign currencies. The Company does not enter into derivatives for speculative or trading purposes. Juniper Networks uses foreign currency forward contracts to mitigate transaction gains and losses generated by certain foreign currency denominated monetary assets and liabilities. These derivatives are carried at fair value with changes recorded in other income (expense) in the same period as changes in the fair value from re-measurement of the underlying assets and liabilities. Cash flows from such hedges are classified as operating activities. These foreign exchange forward contracts have maturities between one and two months.
 
The Company also uses foreign currency forward and/or option contracts to hedge certain forecasted foreign currency transactions relating to operating expenses. These derivatives are designated as cash flow hedges and have maturities of less than one year. The effective portion of the derivative’s gain or loss is initially reported as a component of accumulated other comprehensive income, and upon occurrence of the forecasted transaction, is subsequently reclassified into the consolidated statements of operations line item to which the hedged transaction relates. The Company records any ineffectiveness of the hedging instruments, which was immaterial during 2007, 2006 and 2005 in other income (expense) on its Consolidated Statements of Operations. Cash flows from such hedges are classified as operating activities.


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Juniper Networks, Inc.
 
Notes to Consolidated Financial Statements — (Continued)
 
Provision for Income Taxes
 
Estimates and judgments occur in the calculation of certain tax liabilities and in the determination of the recoverability of certain deferred tax assets, which arise from temporary differences and carryforwards. Deferred tax assets and liabilities are measured using the currently enacted tax rates that apply to taxable income in effect for the years in which those tax assets are expected to be realized or settled. The Company regularly assesses the likelihood that its deferred tax assets will be realized from recoverable income taxes or recovered from future taxable income based on the realization criteria set forth under FAS 109, Accounting for Income Taxes, and records a valuation allowance to reduce its deferred tax assets to the amount that it believes to be more likely than not realizable. The Company believes it is more likely than not that forecasted income together with the tax effects of the deferred tax liabilities, will be sufficient to fully recover the remaining deferred tax assets. In the event that all or part of the net deferred tax assets are determined not to be realizable in the future, an adjustment to the valuation allowance would be charged to earnings in the period such determination is made. Similarly, if the Company subsequently realizes deferred tax assets that were previously determined to be unrealizable, the respective valuation allowance would be reversed, resulting in a positive adjustment to earnings or a decrease in goodwill in the period such determination is made. In addition, the calculation of tax liabilities involves dealing with uncertainties in the application of complex tax regulations. The Company recognizes potential liabilities based on its estimate of whether, and the extent to which, additional taxes will be due.
 
On January 1, 2007, the Company adopted the Financial Accounting Standards Board (“FASB”) Interpretation No. 48, Accounting for Uncertainty in Income Taxes, (“FIN 48”). FIN 48 is an interpretation of FASB Statement 109, Accounting for Income Taxes, and it seeks to reduce the diversity in practice associated with certain aspects of measurement and recognition in accounting for income taxes. FIN 48 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position that an entity takes or expects to take in a tax return. Additionally, FIN 48 provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosures and transition. Under FIN 48, an entity may only recognize or continue to recognize tax positions that meet a “more likely than not” threshold. In addition, the application of FIN 48 may increase an entity’s future effective tax rates and its future intra-period effective tax rate volatility. The Company’s cumulative effect of applying FIN 48 was a $19.2 million increase to the opening balance of accumulated deficit as of January 1, 2007 and a $1.0 million increase to goodwill.