EN 60728-7-3:2009

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Reference architecture forward and return channel
  specifications
5 Power supply to transponder interface bus specification
  overview
6 Power supply to transponder interface bus - Physical
  layer specification
7 Alternative power supply to transponder interface bus -
  Physical layer specification
8 Power supply to transponder interface bus - Data link
  layer specification
Annex A (informative) - HMS specification documents
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

IEC 60728-7-3:2009(E) specifies requirements for the Hybrid Fibre Coax (HFC) Outside Plant (OSP) Power Supplies (PS). This standard is part of a series developed to support the design and implementation of interoperable management systems for evolving HFC cable networks. The purpose of the standards is to support the design and implementation of interoperable management systems for evolving HFC cable networks. The Power Supply to Transponder Interface Bus (PSTIB) specification describes the physical (PHY) interface and related messaging and protocols implemented at the Data Link Layer (DLL), layers 1 and 2 respectively in the 7-layer ISO-OSI reference model, that support communications between compliant transponders and the managed OSP power supplies and other related power equipment to which they interface. It constitutes a technical revision and includes the following significant technical changes with respect to the previous edition: All changes from standard ANSI/SCTE 25-3 v1.0 to standard ANSI/SCTE 25-3 v1.1 (2005) have been taken into account in this second edition. Clause 7 is based on standard ANSI/SCTE 110 (2005). Addition of informative Annex A concerning hybrid management sub-layer.