Overview
In January 2025, Comcast began deploying next-generation FDX Smart Amplifiers, supporting DOCSIS® 4.0 FDX networks today. Unified DOCSIS 4.0 amplifiers support FDX, but also extending the Downstream to 1.8 GHz, among other features, will reach the field later this year. These deployments prove that FDX is not limited to N+0, despite that being the reference architecture in the DOCSIS 4.0 FDX standard. We will describe the experience and lessons learned deploying this first-of-its-kind technology at scale.