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  • BSI
    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
    Edition: 2015
    $316.70
    / user per year

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

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


Standard NumberBS EN 60728-7-1:2005+A1:2015
TitleCable networks for television signals, sound signals and interactive services - Hybrid Fibre Coax Outside Plant Status Monitoring. Physical (PHY) Layer Specification
StatusDefinitive
Publication Date2015-07-31
ReplacesBS EN 60728-7-1:2005
Identical National Standard OfEN 60728-7-1:2005/A1:2015, IEC 60728-7-1:2003/AMD1:2015
AmendsBS EN 60728-7-1:2005
DescriptorsPhysical layer (OSI), Fibre optic connectors, Telecommunication systems, Communication networks, Communication equipment, Broadcasting networks, Telecommunication, Television systems, Management, Cable television, Acoustic signals, Optoelectronic devices, Television networks, Optical fibres, Amplifiers, Receivers, Video signals, Open systems interconnection, Wire transmission (telecommunication), Coaxial cables, Visual signals, Transmitters
ICS33.040.40 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
CommitteeEPL/100
ISBN978 0 580 79846 7
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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