Harmonic’s SeaStar Optical Node is a compact, fiber‑forward RPD solution that delivers multigigabit broadband to low-density MDUs without rewiring.
\nEngineered for rapid deployments and integrated into the Harmonic cOS platform, SeaStar enables operators to grow broadband services efficiently, reliably, and cost-effectively—up to 16 buildings and 32 subscriber units per node.
\nKeys for Providers
\nBrownfield MDU upgrade campaigns: Provide fiber-level speeds where retrofitting wiring or permits are cost‑ and time‑prohibitive.
\nExtend broadband into underserved mid‑density MDUs: Tap into new revenue with minimal infrastructure changes.
\nUnified DOCSIS & Fiber migrations: Transition to DOCSIS 4.0, FDD or FDX, or mix DOCSIS + PON on a unified edge architecture.
\nSeaStar is designed to deliver fiber speeds to up to 16 low-density apartment buildings within a radius of ~5 km. It can serve up to 32 units per MDU via existing in‑building coax infrastructure—a perfect fit where running new cabling is not practical.
\nHarnesses a Harmonic Pebble Remote PHY Device (RPD) to convert optical transport into RF at the subscriber premises. This allows existing coax cabling to deliver DOCSIS broadband without major rewiring.
\nBuilt for both indoor and outdoor deployment—mounted on walls, poles, strands, or pedestals—SeaStar thrives in rugged environments while keeping power consumption minimal.
\nSeaStar supports coexistence with PON (Passive Optical Network) solutions. Operators can optionally attach a Fin 10G SFP+-based OLT or external OLT to deploy PON services alongside DOCSIS data.
\nFully integrated into Harmonic’s cOS™ broadband platform, SeaStar enables unified management of DOCSIS, fiber, and DAA devices from a single interface—streamlining operations significantly.
\nProvides up to 8.5 Gbps downstream and 1.5 Gbps upstream, delivering near fiber-like speeds to end users using traditional inside‑coax infrastructure.
\nBy leveraging existing coax wiring, SeaStar avoids status-quo disruptions, cutting both capital and operational expenses. Deployments are faster and less intrusive, maximizing return on infrastructure assets.
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\n![\"Full%20Provisioning%20with%20Subscriber%20CPE\"](\"https://eti-software.imgix.net//DOCSIS-FULL-SUBS-CPE.png\")
\n\n![\"SeaStar%20DHCP%20Strategy%20Adaptive%20Perspective\"](\"https://eti-software.imgix.net//SeaStar-DHCP-Strategy-Adaptive.png\")
\n\n![\"SeaStar%20DHCP%20Strategy%20Hierarchical%20Perspective\"](\"https://eti-software.imgix.net//SeaStar-DHCP-Hierarchical.png\")
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