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Homepage>BS Standards>33 TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING>33.040 Telecommunication systems>33.040.01 Telecommunication systems in general>BS EN 60728-7-1:2005+A1:2015 Cable networks for television signals, sound signals and interactive services Hybrid Fibre Coax Outside Plant Status Monitoring. Physical (PHY) Layer Specification
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BS EN 60728-7-1:2005+A1:2015 Cable networks for television signals, sound signals and interactive services Hybrid Fibre Coax Outside Plant Status Monitoring. Physical (PHY) Layer Specification

BS EN 60728-7-1:2005+A1:2015

Cable networks for television signals, sound signals and interactive services Hybrid Fibre Coax Outside Plant Status Monitoring. Physical (PHY) Layer Specification

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Standard number:BS EN 60728-7-1:2005+A1:2015
Pages:22
Released:2015-07-31
ISBN:978 0 580 79846 7
Status:Standard
DESCRIPTION

BS EN 60728-7-1:2005+A1:2015


This standard BS EN 60728-7-1:2005+A1:2015 Cable networks for television signals, sound signals and interactive services is classified in these ICS categories:
  • 33.040.40 Data communication networks
  • 35.100.10 Physical layer
  • 33.160.01 Audio, video and audiovisual systems in general
  • 33.040.01 Telecommunication systems in general

This part of IEC 60728 specifies requirements for The Hybrid Fibre Coax (HFC) Outside Plant (OSP) Physical (PHY) Layer Specification and is part of the series of specifications developed by the Hybrid Management Sub-Layer (HMS) subcommittee under the SCTE. The purpose of the HMS specification is to support the design and implementation of interoperable management systems for evolving HFC cable networks. The HMS Physical (PHY) Layer Specification describes the physical layer portion of the protocol stack used for communication between HMS-compliant transponders interfacing to managed outside plant network elements (NE) and a centralized head-end element (HE).

This standard describes the PHY layer requirements that must be implemented by all Type 2 and Type 3 compliant OSP HMS transponders on the HFC plant and the controlling equipment in the head-end. Any exceptions to compliance with this standard will be specifically noted herein as necessary. Refer to Table 1 for a full definition of the type classifications.

Electromagnetic Compatibility (EMC) is not specified in this standard and is left to the vendor to ensure compliance with local EMC regulatory requirements. Other than operating temperature, physical parameters such as shock, vibration, humidity, etc., are also not specified and left to the vendor’s discretion.

Transponder type classifications referenced within the HMS series of standards are defined in Table 1.

Table 1
Transponder type classifications
Type Description Application
Type 0 Refers to legacy transponder equipment, which is incapable of supporting the HMS specifications This transponder interfaces with legacy network equipment through proprietary means.
This transponder could be managed through the same management applications as the other types through proxies or other means at the head-end
Type 1 Refers to stand-alone transponder equipment (legacy or new) which can be upgraded to support the HMS specifications This transponder interfaces with legacy network equipment through proprietary means.
Type 1 is a standards-compliant transponder (either manufactured to the standard or upgraded) that connects to legacy network equipment via a proprietary interface
Type 2 Refers to a stand-alone, HMS-compliant transponder This transponder interfaces with network equipment designed to support the electrical and physical specifications defined in the HMS standards.
It can be factory or field-installed.
Its RF connection is independent of the monitored NE
Type 3 Refers to a stand-alone or embedded, HMS-compliant transponder This transponder interfaces with network equipment designed to support the electrical specifications defined in the HMS standards.
It may or may not support the physical specifications defined in the HMS standards.
It can be factory-installed. It may or may not be field-installed.
Its RF connection is through the monitored NE