This article discusses the urgent need for cable operators to virtualize their CMTS (vCMTS) infrastructure due to end-of-life iCMTS solutions, rising competition from telcos, and growing consumer demand for broadband. Harmonic highlights its cOS Platform as a leading vCMTS solution, supporting over 90 operators and offering advantages in deployment, capacity, operations, monitoring, maintenance, and cost over traditional iCMTS.
The shift from 'big iron' hardware to cloud-native software represents a critical pivot for cable MSOs facing aggressive fiber-to-the-home competition from telcos. By decoupling network functions from proprietary hardware, operators can achieve the scaling agility of web-scale companies while sweating existing HFC assets through DOCSIS 3.1 and 4.0 upgrades. This move reduces CapEx on 'regrettable' legacy gear and addresses urgent sustainability mandates through significant power and space reclamation. Watch for Harmonic’s ability to maintain its market lead as major incumbents like CommScope and Cisco pivot their own portfolios toward virtualized Distributed Access Architecture (DAA) to retain Tier-1 accounts.
Harmonic's cOS Platform has become the dominant vCMTS solution in the cable industry, with the company ending 2022 with 91 CableOS customers and growing that base to 94 by mid-2023. Harmonic announced in March 2023 that Charter Communications selected it as a strategic technology partner for vCMTS deployment, joining Comcast, Vodafone, Rogers Communications, and GCI among major operators using the platform. Raymond James analyst Simon Leopold estimated the Charter opportunity could rival the $450 million Comcast had spent with Harmonic on CableOS and remote PHY nodes since 2019. The deal cemented Harmonic's leadership in a market where competitors were still in early development stages.
The competitive landscape for vCMTS has shifted as CommScope reenergized its efforts to challenge Harmonic's dominance. CommScope confirmed in October 2023 that it had secured its first customer commitment for a vCMTS alongside several field trials, with the company's access network solutions head Guy Sucharczuk noting that CommScope's existing E6000 chassis-based CMTS work could be ported to the virtualized platform for rapid scale. Casa Systems also announced a vCMTS deal with an unnamed major European cable operator around the same period, while Cisco put its vCMTS product on hold and Vecima Networks considered entering the market.
Harmonic's relationship with Charter expanded significantly in late 2025, reinforcing the company's position as cable's leading vCMTS vendor. Charter signed an expanded partnership in November 2025 to deploy Harmonic's cOS platform across its entire broadband customer base, along with Pebble-2 remote PHY devices featuring unified DOCSIS 4.0 silicon. Under Charter's HFC upgrade plan, 50% of the network is being pushed to 1.2 GHz with a vCMTS and distributed access architecture, while 35% will receive a full DOCSIS 4.0 upgrade including 1.8 GHz technology. Harmonic also announced that Comcast would use its virtual broadband network gateway and remote optical line terminal products for fiber expansion projects targeting approximately 1.2 million new locations.
Add StreamingMeme as a preferred source on Google to see more of our streaming news at the top of your Search results.
Add as preferred source