Comcast installs its first commercial modem with DOCSIS 3.1 technology for a customer in Philadelphia, providing speeds of up to 1 Gbps
Comcast now offering 1Gbps speeds across DOCSIS 3.1 — Comcast has connected the first commercial DOCSIS 3.1 service to a customer in Philadelphia, providing speeds of up to 1Gbps.
Context & Ripple Effects
This install is the commercial debut of a plan Comcast laid out in August, when it committed to upgrading its whole cable network to 10-Gbps-capable DOCSIS 3.1 within two to three years, starting at 1 Gbps. A single Philadelphia modem matters because it proves the upgrade works on existing cable plant rather than new construction.
The move also fits Comcast's broader gigabit posture through 2015: it launched a 2 Gbps fiber service in Atlanta pitched at twice Google Fiber's speed in April, and began offering 2 Gbps in Chattanooga after losing its suit to block municipal fiber expansion there. DOCSIS 3.1 is how that same speed tier scales beyond showcase fiber markets.
First-order effects
- A Philadelphia customer now receives up to 1 Gbps over ordinary cable infrastructure, making this the first revenue DOCSIS 3.1 service and validating Comcast's network-upgrade timeline with hardware in the field.
Second-order effects
- With the follow-on rollout targeting Atlanta, Nashville, then Chicago, Detroit, and Miami per the related coverage, cable rivals and Google Fiber face gigabit-speed competition delivered without fiber trenching, pressuring their own pricing and deployment schedules.
Third-order effects
- If DOCSIS 3.1 holds up commercially, the structural gap between cable and fiber narrows from a construction question to a modem-and-software question — weakening the case for both municipal fiber builds of the Chattanooga type and fiber-only entrants' speed differentiation.
The trend: Gigabit broadband is shifting from a fiber-exclusive capability to a cable-delivered one, as DOCSIS 3.1 lets incumbent operators match fiber speeds on existing plant.