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Harmonic Sets DOCSIS 4.0 Record with 14 Gbps Downstream Speed at CableLabs Interoperability Event

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Harmonic (NASDAQ: HLIT) has achieved a significant technical milestone at the CableLabs® Interop event by demonstrating 14 Gbps downstream throughput using its cOS™ virtualized broadband platform and Pebble-2 DOCSIS 4.0 Remote PHY Device (RPD). This performance exceeds the 10 Gbps DOCSIS 4.0 benchmark target.

The company's cOS platform stands out as the industry's first solution to unify both Full Duplex (FDX) and Frequency Division Duplex (FDD) modes of DOCSIS 4.0 technology. According to Dell'Oro Group, Harmonic leads the market in cable broadband equipment, virtual CMTS, and DAA, with its platform powering services through over 33 million customer premises equipment devices globally.

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Positive

  • Achieved record-breaking 14 Gbps downstream throughput, surpassing 10 Gbps benchmark
  • First platform to unify both DOCSIS 4.0 technology modes (FDX and FDD)
  • Market leadership position in cable broadband equipment confirmed by Dell'Oro Group
  • Platform powers over 33 million CPE devices worldwide

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News Market Reaction 1 Alert

-9.64% News Effect

On the day this news was published, HLIT declined 9.64%, reflecting a notable negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

SAN JOSE, Calif., July 8, 2025 /PRNewswire/ -- Harmonic (NASDAQ: HLIT) today announced a record-breaking demonstration at the recent CableLabs® Interop event, setting a new industry benchmark for DOCSIS® 4.0 performance. Harmonic's market-leading cOS™ virtualized broadband platform delivered an impressive 14 Gbps of downstream throughput across a multi-vendor network. This milestone achievement underscores Harmonic's continued broadband innovation and leadership, empowering operators to meet multigigabit connectivity demands with outstanding reliability.

"Interoperability testing at CableLabs plays a critical role in accelerating the deployment of DOCSIS technologies by enabling vendors to validate functionality in a collaborative, multi-vendor environment," said Doug Jones, principal architect at CableLabs. "These intensive sessions — which involve numerous upgrade cycles — are instrumental to advancing modem, RPD and Core interoperability and ensuring readiness for certification. The recent achievement of 14 Gbps downstream DOCSIS throughput across a multi-vendor cable network is a testament to their impact. Continued participation from companies like Harmonic, who have been consistently engaged throughout our DOCSIS 4.0 interop events, supports the broader industry's ability to deliver reliable, high-speed broadband solutions."

The interoperability event featured Harmonic's cOS broadband platform and Pebble-2 DOCSIS 4.0 Remote PHY Device (RPD) delivering 14 Gbps downstream, far surpassing the 10 Gbps DOCSIS 4.0 benchmark target. Harmonic's cOS platform is the industry's first solution to unify both modes of DOCSIS 4.0 technology — Full Duplex (FDX) and Frequency Division Duplex (FDD), giving operators the flexibility to choose the deployment strategy that best matches their business and network needs.

"This major milestone demonstrates that our cOS platform is primed to support DOCSIS 4.0 rollouts, enabling the standard's full set of downstream and upstream speed options with fiber-like symmetric multigigabit speeds," said Asaf Matatyaou, senior vice president, product, at Harmonic. "Harmonic continues to push the boundaries of what's possible through innovation and collaboration to lead the broadband industry's transformation and shape the future of connectivity."

Harmonic is the market share leader in cable broadband equipment, virtual CMTS and DAA, according to Dell'Oro Group, the trusted source for market information about the telecommunications, networks and data center IT industries. The company's market-leading cOS platform powers next-gen broadband services through more than 33 million customer premises equipment (CPE) devices worldwide for leading operators in North America, Europe, Latin America and Asia. 

To learn more about Harmonic's broadband solutions, visit www.harmonicinc.com/broadband.

About Harmonic
Harmonic (NASDAQ: HLIT), the worldwide leader in virtualized broadband and video delivery solutions, enables media companies and service providers to deliver ultra-high-quality video streaming and broadcast services to consumers globally. The company revolutionized broadband networking via the industry's first virtualized broadband solution, enabling operators to more flexibly deploy gigabit internet services to consumers' homes and mobile devices. Whether simplifying OTT video delivery via innovative cloud and software platforms, or powering the delivery of gigabit internet services, Harmonic is changing the way media companies and service providers monetize live and on-demand content on every screen. More information is available at www.harmonicinc.com

Legal Notice Regarding Forward-Looking Statements
This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Statements concerning Harmonic's business and the anticipated capabilities, advantages, reliability, efficiency, market acceptance, market growth, specifications and benefits of Harmonic products, services and technology are forward-looking statements. These statements are based on our current expectations and beliefs and are subject to risks and uncertainties, including the risks and uncertainties more fully described in Harmonic's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended Dec. 31, 2024, its Quarterly Reports on Form 10-Q and its Current Reports on Form 8-K. The forward-looking statements in this press release are based on information available to Harmonic as of the date hereof, and Harmonic disclaims any obligation to update any forward-looking statements.

Harmonic, the Harmonic logo and other Harmonic marks are owned by Harmonic Inc. or its affiliates. All other trademarks referenced herein are the property of their respective owners.

Cision View original content to download multimedia:https://www.prnewswire.com/news-releases/harmonic-sets-docsis-4-0-record-with-14-gbps-downstream-speed-at-cablelabs-interoperability-event-302499744.html

SOURCE Harmonic Inc.

FAQ

What speed record did Harmonic (HLIT) achieve with DOCSIS 4.0?

Harmonic achieved 14 Gbps downstream throughput at the CableLabs Interop event, exceeding the 10 Gbps DOCSIS 4.0 benchmark target.

What makes Harmonic's cOS platform unique for DOCSIS 4.0?

Harmonic's cOS platform is the industry's first solution to unify both Full Duplex (FDX) and Frequency Division Duplex (FDD) modes of DOCSIS 4.0 technology, offering operators flexible deployment options.

How many devices globally are powered by Harmonic's cOS platform?

Harmonic's cOS platform powers services through more than 33 million customer premises equipment (CPE) devices worldwide for operators in North America, Europe, Latin America and Asia.

What is Harmonic's market position in cable broadband equipment?

According to Dell'Oro Group, Harmonic is the market share leader in cable broadband equipment, virtual CMTS and DAA.
Harmonic Inc

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