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Operating Segments and Geographic Information (Tables)
 6 Months Ended
Dec. 28, 2024
Segment Reporting [Abstract]  
Schedule of Information on Reportable Segments
The following tables present information on the Company’s reportable segments for the three months ended December 28, 2024 and December 30, 2023 (in millions):
Three Months Ended December 28, 2024
Network and Service Enablement
 Network EnablementService EnablementNetwork and Service EnablementOptical Security and Performance Products
Other Items (1)
Consolidated GAAP Measures
Product revenue$146.9 $7.9 $154.8 $70.9 $— $225.7 
Service revenue32.1 13.0 45.1 — — 45.1 
Net revenue$179.0 $20.9 $199.9 $70.9 $— $270.8 
Gross profit$115.4 $14.1 $129.5 $35.9 $(4.6)$160.8 
Gross margin64.5 %67.5 %64.8 %50.6 %59.4 %
Operating income$17.4 $23.0 $(18.2)$22.2 
Operating margin8.7 %32.4 %8.2 %
Three Months Ended December 30, 2023
Network and Service Enablement
 Network Enablement Service Enablement Network and Service EnablementOptical Security and Performance Products
Other Items (1)
Consolidated GAAP Measures
Product revenue
$125.2 $10.8 $136.0 $74.9 $— $210.9 
Service revenue
30.3 13.3 43.6 — — 43.6 
Net revenue$155.5 $24.1 $179.6 $74.9 $— $254.5 
Gross profit$97.2 $16.6 $113.8 $39.0 $(4.8)$148.0 
Gross margin62.5 %68.9 %63.4 %52.1 %58.2 %
Operating income$6.4 $27.3 $(11.3)$22.4 
Operating margin3.6 %36.4 %8.8 %
(1)See below table for details of reconciling items impacting gross profit and operating income.
Three Months Ended
 December 28, 2024December 30, 2023
Corporate reconciling items impacting gross profit:
Total segment gross profit$165.4 $152.8 
Stock-based compensation(1.3)(1.2)
Amortization of intangibles(3.3)(3.4)
Other charges unrelated to core operating performance (1)
— (0.2)
Total reconciling items(4.6)(4.8)
GAAP gross profit$160.8 $148.0 
Corporate reconciling items impacting operating income:
Total segment operating income$40.4 $33.7 
Stock-based compensation(13.7)(12.5)
Amortization of intangibles(4.3)(4.8)
Change in fair value of contingent liability3.9 7.0 
Acquisition and integration related charges(2.8)(0.6)
Other charges unrelated to core operating performance (1)
(0.1)(0.5)
Restructuring and related (charges) benefits(1.2)0.1 
Total reconciling items(18.2)(11.3)
GAAP operating income from continuing operations$22.2 $22.4 
(1)Other items include charges unrelated to core operating performance primarily consisting of transformational initiatives such as site consolidations, intangible impairment and gain or loss on disposal of long-lived assets.

The following tables present information on the Company’s reportable segments for the six months ended December 28, 2024 and December 30, 2023 (in millions):
Six Months Ended December 28, 2024
Network and Service Enablement
 Network EnablementService EnablementNetwork and Service EnablementOptical Security and Performance Products
Other Items (1)
Consolidated GAAP Measures
Product revenue$259.5 $14.0 $273.5 $149.7 $— $423.2 
Service revenue61.1 24.7 85.8 — — 85.8 
Net revenue$320.6 $38.7 $359.3 $149.7 $— $509.0 
Gross profit$201.7 $24.9 $226.6 $79.5 $(9.2)$296.9 
Gross margin62.9 %64.3 %63.1 %53.1 %58.3 %
Operating income$10.1 $54.2 $(30.6)$33.7 
Operating margin2.8 %36.2 %6.6 %
Six Months Ended December 30, 2023
Network and Service Enablement
 Network Enablement Service Enablement Network and Service EnablementOptical Security and Performance Products
Other Items (1)
Consolidated GAAP Measures
Product revenue$245.6 $18.5 $264.1 $152.4 $— $416.5 
Service revenue59.9 26.0 85.9 — — 85.9 
Net revenue$305.5 $44.5 $350.0 $152.4 $— $502.4 
Gross profit$191.8 $30.3 $222.1 $79.7 $(9.4)$292.4 
Gross margin62.8 %68.1 %63.5 %52.3 %58.2 %
Operating income$7.9 $56.6 $(26.1)$38.4 
Operating margin2.3 %37.1 %7.6 %
(1)See below table for details of reconciling items impacting gross profit and operating income.

Six Months Ended
 December 28, 2024December 30, 2023
Corporate reconciling items impacting gross profit:
Total segment gross profit$306.1 $301.8 
Stock-based compensation(2.5)(2.4)
Amortization of intangibles(6.6)(6.9)
Other charges unrelated to core operating performance (1)
(0.1)(0.1)
Total reconciling items(9.2)(9.4)
GAAP gross profit$296.9 $292.4 
Corporate reconciling items impacting operating income:
Total segment operating income$64.3 $64.5 
Stock-based compensation(26.4)(23.7)
Amortization of intangibles(8.7)(10.4)
Change in fair value of contingent liability7.4 8.4 
Acquisition and integration related charges(3.4)(0.6)
Other benefits (charges) unrelated to core operating performance (1)(2)
0.4 (0.7)
Litigation settlement1.3 — 
Restructuring and related (charges) benefits(1.2)0.9 
Total reconciling items(30.6)(26.1)
GAAP operating income from continuing operations$33.7 $38.4 
(1)Other items include (charges) benefits unrelated to core operating performance primarily consisting of transformational initiatives such as site consolidations, intangible impairment and gain or loss on disposal of long-lived assets.
(2)Included in the six months ended December 28, 2024 is a gain of $0.9 million on the sale of assets previously classified as held for sale.
The following table presents net revenue by the three geographic regions in which the Company operates and net revenue from countries that exceeded 10% of the Company’s total net revenue for the three and six months ended December 28, 2024 and December 30, 2023 (in millions):
 Three Months Ended
 December 28, 2024December 30, 2023
Product RevenueService RevenueTotalProduct RevenueService RevenueTotal
Americas:
United States$83.6 $14.9 $98.5 $68.6 $16.1 $84.7 
Other Americas13.7 3.9 17.6 14.6 3.8 18.4 
Total Americas$97.3 $18.8 $116.1 $83.2 $19.9 $103.1 
Asia-Pacific:
Greater China$47.7 $2.7 $50.4 $45.9 $1.5 $47.4 
Other Asia-Pacific34.8 8.4 43.2 24.9 7.2 32.1 
Total Asia-Pacific$82.5 $11.1 $93.6 $70.8 $8.7 $79.5 
EMEA:$45.9 $15.2 $61.1 $56.9 $15.0 $71.9 
Total net revenue$225.7 $45.1 $270.8 $210.9 $43.6 $254.5 
 Six Months Ended
 December 28, 2024December 30, 2023
Product RevenueService RevenueTotalProduct RevenueService RevenueTotal
Americas:
United States$142.0 $29.5 $171.5 $136.2 $31.3 $167.5 
Other Americas25.4 7.9 33.3 28.3 7.8 36.1 
Total Americas$167.4 $37.4 $204.8 $164.5 $39.1 $203.6 
Asia-Pacific:
Greater China$100.3 $3.9 $104.2 $95.3 $3.2 $98.5 
Other Asia-Pacific61.0 14.3 75.3 53.2 13.7 66.9 
Total Asia-Pacific$161.3 $18.2 $179.5 $148.5 $16.9 $165.4 
EMEA:$94.5 $30.2 $124.7 $103.5 $29.9 $133.4 
Total net revenue$423.2 $85.8 $509.0 $416.5 $85.9 $502.4