Operating Segment Information

9 Months Ended

Sep. 30, 2011

Operating Segment Information [Abstract]

Operating Segment Information

Note 12 — Operating Segment Information

We currently consider ourselves to be in a single reportable segment under the authoritative guidance for segment reporting, specifically the development and sale of signaling telecommunications solutions and related value added applications and services.

Enterprise-Wide Disclosures

The following tables set forth, for the periods indicated, revenues from external customers by type (product, warranty and support, and services), as well as revenues by domestic versus international regions (in thousands):

	For the Three Months Ended September 30,
	2011		2010
Product revenues	$	72,550	$	67,709
Warranty and support revenues		22,487		23,020
Professional and other services revenues		11,142		17,576
Total revenues	$	106,179	$	108,305

	For the Nine Months  Ended September 30,
	2011		2010
Product revenues	$	207,202	$	219,137
Warranty and support revenues		67,907		63,713
Professional and other services revenues		35,629		50,953
Total revenues	$	310,738	$	333,803

	Revenues from External Customers
	By Geographic Region
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
United States	$	47,463	$	44,638	$	121,827	$	125,261
International		58,716		63,667		188,911		208,542
Total revenues from external customers	$	106,179	$	108,305	$	310,738	$	333,803

For the three months ended September 30, 2011, revenues from AT&T, Carso Global Telecom, and Verizon represented 16%, 12%, and 11% of our total revenues, respectively. For the nine months ended September 30, 2011, revenues from AT&T and Verizon represented 15% and 13% of our total revenues, respectively. For the three months ended September 30, 2010, revenues from AT&T and Verizon represented 22% and 10% of our total revenues, respectively. For the nine months ended September 30, 2010, revenues from AT&T represented 17% of our total revenues.

For the three months ended September 30, 2011, revenues from Brazil accounted for 15% of our total revenues, and for the nine months ended September 30, 2011, revenues from Brazil and India accounted for 12% and 10% of our total revenues, respectively. For the three and nine months ended September 30, 2010, revenues from India accounted for 14% and 12% of our total revenues, respectively.

The following table sets forth, for the periods indicated, our long-lived assets including net property and equipment, and other assets by geographic region (in thousands):

	Long-Lived Assets
	By Geographic Region
	September 30,		December 31,
	2011		2010
United States	$	29,987	$	30,836
Other		7,254		7,840
Total long-lived assets	$	37,241	$	38,676