Harmonic's cOS powers GCI's multi-gigabit broadband network in Alaska.

Harmonic has partnered with GCI to modernize its DOCSIS network and deliver high-speed broadband services across Alaska. Harmonic's cOS virtualized broadband platform enables DOCSIS 4.0 services with faster speeds, greater reliability, and enhanced scalability. The platform transforms GCI's existing infrastructure to support both current multi-gig speeds and future scalability.

Harmonic Inc. (NASDAQ: HLIT) has partnered with GCI, Alaska's largest telecommunications company, to modernize its DOCSIS network and deliver high-speed broadband services across the state. The collaboration leverages Harmonic's cOS virtualized broadband platform, which enables DOCSIS 4.0 services with faster speeds, greater reliability, and enhanced scalability. The platform transforms GCI's existing infrastructure to support both current multi-gig speeds and future scalability, positioning the network for long-term success [2].

The partnership involves a turnkey solution from Harmonic, encompassing high-level and low-level design, outside plant construction, and critical enhancements to cables and passive components. The solution features Harmonic's cOS broadband platform in a distributed access architecture (DAA) with Pebble Unified DOCSIS 4.0 Remote PHY Devices (RPDs) inside the Ripple modular DAA nodes. This setup extends the operational life of GCI's existing DOCSIS infrastructure while supporting future service innovations [2].

The cOS Central services elevate GCI's network operations by providing real-time insights and proactive maintenance, ensuring consistently high-quality broadband experiences for subscribers. The advanced solution allows GCI to offer customers significantly enhanced broadband services characterized by faster speeds and robust connectivity [2].

Harmonic's market-leading solutions and deep expertise in Unified DOCSIS 4.0 are integral to GCI's modernization efforts. The company is committed to ensuring GCI's success and delivering high-quality, high-bandwidth broadband services to communities across Alaska [2].

References:
[1] Harmonic Inc. (2025). Harmonic Unwraps the Game Plan for Next-Gen Broadband Delivery at SCTE TechExpo25. Retrieved from https://investor.harmonicinc.com/news-releases/news-release-details/harmonic-unwraps-game-plan-next-gen-broadband-delivery-scte
[2] Marketscreener. (2025). GCI Set to Transform Alaska's Broadband Landscape with DOCSIS 4.0 Rollout Powered by Harmonic. Retrieved from https://www.marketscreener.com/news/gci-set-to-transform-alaska-s-broadband-landscape-with-docsis-4-0-rollout-powered-by-harmonic-ce7c50d3df8ff72d