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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Jun. 28, 2025 | Jun. 29, 2024 | Jul. 01, 2023 | Jul. 02, 2022 | Jul. 03, 2021
Pay vs Performance Disclosure |  |  |  |  |
Pay vs Performance Disclosure, Table |
Year(1) (a) | Summary Compensation Table Total for PEO (b) | Compensation Actually Paid to PEO(2)(3) (c) | Average Summary Compensation Table Total for Non-PEO Named Executive Officers (d) | Average Compensation Actually Paid to Non-PEO Named Executive Officers(2)(4) (e) | Value of Initial Fixed $100 Investment Based On:(5) | Net Income (in millions) (h) | Consolidated Non-GAAP Operating Income (in millions)(6) (i)
Total Shareholder Return (f) | Peer Group Total Shareholder Return (g)
2025 | $10,595,839 | $16,382,196 | $2,307,135 | $3,597,518 | $80 | $119 | $34.8 | $153.9
2024 | $8,327,769 | $(1,523,950) | $2,066,364 | $687,143 | $55 | $93 | $(25.8) | $115.0
2023 | $8,978,665 | $5,273,915 | $1,779,833 | $1,142,474 | $91 | $95 | $25.5 | $172.5
2022 | $9,340,416 | $2,475,672 | $1,807,445 | $812,945 | $105 | $93 | $15.5 | $286.8
2021 | $16,868,008 | $20,204,757 | $2,690,648 | $1,913,339 | $140 | $127 | $67.5 | $253.5
Company Selected Measure Name | Consolidated Non-GAAP Operating Income |  |  |  |
Named Executive Officers, Footnote | The following table lists the PEO and Non-PEO NEOs for each of fiscal years 2021, 2022, 2023, 2024 and 2025.
| PEO | Non-PEO NEOs
2025 | Oleg Khaykin | Ilan Daskal, Paul McNab, Luke Scrivanich, Gary Staley
2024 | Oleg Khaykin | Ilan Daskal, Paul McNab, Luke Scrivanich, Gary Staley, Henk Derksen, and Pam Avent
2023 | Oleg Khaykin | Henk Derksen, Paul McNab, Luke Scrivanich and Gary Staley
2022 | Oleg Khaykin | Henk Derksen, Paul McNab, Luke Scrivanich and Gary Staley
2021 | Oleg Khaykin | Amar Maletira, Paul McNab, Luke Scrivanich, Gary Staley, and Pam Avent
Peer Group Issuers, Footnote | In accordance with the Pay Versus Performance Rules, the Company and the Company’s peer group total shareholder return (the “Peer Group TSR”) is determined based on the value of an initial fixed investment of $100 on June 27, 2020, through the end of the listed fiscal year. The Peer Group TSR set forth in this table was determined using the Nasdaq Telecommunication Index, which we also use in preparing the stock performance graph required by Item 201(e) of Regulation S-K for our Annual Report for the fiscal year ended June 28, 2025. |  |  |  |
PEO Total Compensation Amount | $ 10,595,839 | $ 8,327,769 | $ 8,978,665 | $ 9,340,416 | $ 16,868,008
PEO Actually Paid Compensation Amount | $ 16,382,196 | (1,523,950) | 5,273,915 | 2,475,672 | 20,204,757
Adjustment To PEO Compensation, Footnote | The following table shows the amounts deducted from and added to the Summary Compensation Table total to calculate “compensation actually paid” to Mr. Khaykin in accordance with the Pay Versus Performance Rules:
| Pension Plan Adjustments | Equity Award Adjustments |
| Summary Compensation Table Total for PEO | Change in Pension Value | Pension Service Cost | Stock Awards | Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End | Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Years | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year | Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year | Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year | Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value | Compensation Actually Paid to PEO
2025 | $10,595,839 | N/A | N/A | $9,114,277 | $10,885,703 | $1,754,210 | - | $2,260,720 | - | - | $16,382,196
Non-PEO NEO Average Total Compensation Amount | $ 2,307,135 | 2,066,364 | 1,779,833 | 1,807,445 | 2,690,648
Non-PEO NEO Average Compensation Actually Paid Amount | $ 3,597,518 | 687,143 | 1,142,474 | 812,945 | 1,913,339
Adjustment to Non-PEO NEO Compensation Footnote | The following table shows the amounts deducted from and added to the average Summary Compensation Table total compensation to calculate the average “compensation actually paid” to our Non-PEO NEOs in accordance with the Pay Versus Performance Rules.
| Pension Plan Adjustments | Equity Award Adjustments |
| Average Summary Compensation Table Total for Non-PEO NEOs ($) | Change in Pension Value ($) | Pension Service Cost ($) | Stock Awards ($) | Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End ($) | Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Granted in Prior Years ($) | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year ($) | Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year ($) | Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year ($) | Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value ($) | Average Compensation Actually Paid to Non-PEO Named Executive Officers ($)
2025 | $2,307,135 | N/A | N/A | $1,630,193 | $1,942,980 | $649,823 | - | $327,774 | - | - | $3,597,518
Compensation Actually Paid vs. Total Shareholder Return | Compensation Actually Paid, Cumulative TSR of the Company and Cumulative TSR of the Peer Group |  |  |  |
Compensation Actually Paid vs. Net Income | Compensation Actually Paid and Net Income |  |  |  |
Compensation Actually Paid vs. Company Selected Measure | Compensation Actually Paid and Non-GAAP Operating Income |  |  |  |
Total Shareholder Return Vs Peer Group | Compensation Actually Paid, Cumulative TSR of the Company and Cumulative TSR of the Peer Group |  |  |  |
Tabular List, Table |
Seven Most Important Performance Measures
Consolidated Non-GAAP Operating Income
Consolidated Revenue
OSP Revenue
OSP Non-GAAP Operating Income
NSE Revenue
NSE Non-GAAP Operating Income
Relative TSR
Total Shareholder Return Amount | $ 80 | 55 | 91 | 105 | 140
Peer Group Total Shareholder Return Amount | 119 | 93 | 95 | 93 | 127
Net Income (Loss) | $ 34,800,000 | $ (25,800,000) | $ 25,500,000 | $ 15,500,000 | $ 67,500,000
Company Selected Measure Amount | 153,900,000 | 115,000,000.0 | 172,500,000 | 286,800,000 | 253,500,000
PEO Name | Oleg Khaykin |  |  |  |
Additional 402(v) Disclosure | The dollar amounts reported represent the amount of “compensation actually paid,” as calculated in accordance with the Pay Versus Performance Rules. These dollar amounts do not reflect the actual amounts of compensation earned by or paid to our NEOs during the applicable year. For purposes of calculating “compensation actually paid,” the fair value of equity awards is calculated in accordance with ASC Topic 718 using the same assumption methodologies used to calculate the grant date fair value of awards for purposes of the Summary Compensation Table (refer to “Executive Compensation and Other Information – Summary Compensation Table” for additional information). |  |  |  |
Measure:: 1 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Consolidated Non-GAAP Operating Income |  |  |  |
Non-GAAP Measure Description | We have determined that Consolidated Non-GAAP Operating Income (also referred to in our Compensation Discussion and Analysis as “Non-GAAP Operating Profit”) is the financial performance measure that, in the Company’s assessment, represents the most important financial performance measure used to link “compensation actually paid” to our NEOs, for FY25, to company performance (the “Company Selected Measure” as defined in the Pay Versus Performance Rules). Please refer to the section titled “Elements of FY25 Executive Compensation – Financial Metrics for FY25” for the definition of Non-GAAP Operating Income and to Annex A for a reconciliation of Non-GAAP Operating Income to GAAP Operating Income. |  |  |  |
Measure:: 2 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Consolidated Revenue |  |  |  |
Measure:: 3 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | OSP Revenue |  |  |  |
Measure:: 4 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | OSP Non-GAAP Operating Income |  |  |  |
Measure:: 5 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | NSE Revenue |  |  |  |
Measure:: 6 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | NSE Non-GAAP Operating Income |  |  |  |
Measure:: 7 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Relative TSR |  |  |  |
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ (9,114,277) |  |  |  |
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 10,885,703 |  |  |  |
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 1,754,210 |  |  |  |
PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 0 |  |  |  |
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 2,260,720 |  |  |  |
PEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 0 |  |  |  |
PEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 0 |  |  |  |
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (1,630,193) |  |  |  |
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 1,942,980 |  |  |  |
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 649,823 |  |  |  |
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 0 |  |  |  |
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 327,774 |  |  |  |
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 0 |  |  |  |
Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ 0 |  |  |  |

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