ANSI/SCTE 25-1 2008

The Hybrid Fiber Coax (HFC) Outside Plant (OSP) Physical (PHY) Layer Specification is partof the suite of specifications developed by the Hybrid Management Sub-Layer (HMS)subcommittee under the SCTE. The purpose of the HMS specifications is to support the designand implementation of interoperable management systems for evolving HFC cable networks.The HMS Physical (PHY) Layer Specification describes the physical layer portion of theprotocol stack used for communication between HMS-compliant transponders interfacing tomanaged outside plant network elements (NE) and a centralized headend element (HE).

This product replaces:ANSI/SCTE 25-1 2002 - Hybrid Fiber/Coax Outside Plant Status Monitoring - PHY Layer, (formerly HMS 005)