IEC 60728-7-1:2003

Cable networks for television signals, sound signals and interactive services - Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring - Physical (PHY) layer specification

IEC 60728-7-1:2003 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. It 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. This bilingual version (2012-08) corresponds to the monolingual English version, published in 2003-10.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 7-1: Surveillance de l'etat des installations extérieures des réseaux hybrides à fibre optique et câble coaxial - Spécification de la couche physique

La CEI 60728-7-1:2003 spécifie les exigences pour la spécification de la couche physique (PHY) des installations extérieures (OSP) des réseaux hybrides à fibres optiques et câble coaxial (HFC) et fait partie de la série de spécifications élaborées par le sous-comité. Sous-couche de gestion des réseaux hybrides (HMS) du SCTE. Elle décrit les exigences de la couche PHY qui doivent être mises en oeuvre par tous les répéteurs de la HMS des OSP conformes de Type 2 et de Type 3 sur l'installation HFC et les matériels de contrôle situés dans les têtes de station. Toute exception à la conformité avec la présente norme sera ici mentionnée explicitement si nécessaire. Se référer au Tableau 1 pour une définition complète des classifications de types. La présente version bilingue (2012-08) correspond à la version anglaise monolingue publiée en 2003-10.

General Information

• Status: Published
• Publication Date: 02-Oct-2003
• ICS: 33.040.40 - Data communication networks
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 35.100.10 - Physical layer
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Drafting Committee: WG 7 - TC 100/TA 5/WG 7
• Current Stage: PPUB - Publication issued
• Start Date: 30-Nov-2003
• Completion Date: 03-Oct-2003

Relations

• Amended By: IEC 60728-7-1:2003/AMD1:2015 - Amendment 1 - Cable networks for television signals, sound signals and interactive services - Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring - Physical (PHY) Layer Specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60728-7-1
First edition
2003-10
Cable networks for television signals,
sound signals and interactive services –
Part 7-1:
Hybrid Fibre Coax Outside Plant
Status Monitoring –
Physical (PHY) Layer Specification
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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thus ensuring that the content reflects current technology. Information relating to
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INTERNATIONAL IEC
STANDARD
60728-7-1
First edition
2003-10
Cable networks for television signals,
sound signals and interactive services –
Part 7-1:
Hybrid Fibre Coax Outside Plant
Status Monitoring –
Physical (PHY) Layer Specification
 IEC 2003  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
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Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60728-7-1  IEC:2003(E)
CONTENTS
FOREWORD . 3
INTRODUCTION .5
1 Scope . 6
2 Normative references. 7
3 Terms, definitions and abbreviations. 7
3.10 Abbreviated terms . 8
4 HMS reference architecture forward and return channel specifications. 9
4.1 HMS specification documents . 9
4.2 Functional assumptions .10
5 Physical layer specification.10
5.1 Separate forward and return channels .10
5.2 Single forward and return path channels.11
5.3 Byte-based transmission.11
5.4 Byte formats and transmission order.11
5.5 Packet-based transmission .11
5.6 Duplex operation .11
5.7 Forward and return channel specifications .11
5.8 Media access control layer interface .18
5.9 RF cut-off .18
Bibliography.19
Figure 1 – HMS Reference architecture diagram . 9
Figure 2 – Bit transmission order.11
Table 1 – Transponder type classifications. 6
Table 2 – HMS document family. 9
Table 3 – Spectral limits by geographical area .10
Table 4 – HMS PHY channel RF and modulation specifications.12

60728-7-1 © IEC:2003(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring –
Physical (PHY) layer specification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60728-7-1 has been prepared by technical area 5: Cable networks
for television signals, sound signals and interactive services, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This standard was submitted to the national committees for voting under the Fast Track
Procedure as the following documents:
CDV Report on voting
100/576/CDV 100/683/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 60728-7-1  IEC:2003(E)
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The following differences exist in some countries:
The Japanese de facto standard (NCTEA S-006) concerning requirements for the HFC
outside plant management, which was published in 1995, has already been available in
Japan. The purpose of this standard is to support the design and implementation of
interoperable management systems for HFC cable networks used in Japan. (see Table 4)

60728-7-1 © IEC:2003(E) – 5 –
INTRODUCTION
Standards of the IEC 60728 series deal with cable networks for television signals, sound
signals and interactive services including equipment, systems and installations for
• head-end reception, processing and distribution of television and sound signals and their
associated data signals, and
• processing, interfacing and transmitting all kinds of signals for interactive services
using all applicable transmission media.
All kinds of networks like
• CATV-networks,
• MATV-networks and SMATV-networks,
• individual receiving networks
and all kinds of equipment, systems and installations installed in such networks, are within
this scope.
The extent of this standardization work is from the antennas, special signal source inputs to
the head-end or other interface points to the network up to the system outlet or the terminal
input, where no system outlet exists.
The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia
terminals, etc.) as well as of any coaxial and optical cables and accessories therefore is
excluded.
– 6 – 60728-7-1  IEC:2003(E)
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring –
Physical (PHY) layer specification
1 Scope
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
This transponder interfaces with legacy network equipment
through proprietary means.
Refers to legacy transponder
Type 0 equipment, which is incapable of
This transponder could be managed through the same
supporting the HMS specifications
management applications as the other types through proxies
or other means at the head-end
This transponder interfaces with legacy network equipment
Refers to stand-alone transponder
through proprietary means.
equipment (legacy or new) which can
Type 1
Type 1 is a standards-compliant transponder (either
be upgraded to support the HMS
manufactured to the standard or upgraded) that connects to
specifications
legacy network equipment via a proprietary interface
This transponder interfaces with network equipment designed
to support the electrical and physical specifications defined in
the HMS standards.
Refers to a stand-alone, HMS-
Type 2
compliant transponder
It can be factory or field-installed.
Its RF connection is independent of the mo
...

IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)
Layer Specification
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Cable networks for television signals, sound signals and interactive services –

Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)

Layer Specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.040; 33.160; 35.100.10 ISBN 978-2-8322-2659-9

IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)
Layer Specification
– 2 – IEC 60728-7-1:2003
+AMD1:2015 CSV  IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.10 Abbreviated terms . 8
4 HMS reference architecture forward and return channel specifications . 8
4.1 HMS specification documents . 9
4.2 Functional assumptions . 9
5 Physical layer specification . 10
5.1 Separate forward and return channels . 10
5.2 Single forward and return path channels . 10
5.3 Byte-based transmission . 10
5.4 Byte formats and transmission order . 10
5.5 Packet-based transmission . 11
5.6 Duplex operation . 11
5.7 Forward and return channel specifications . 11
5.8 Media access control layer interface . 18
5.9 RF cut-off . 18
Bibliography . 19

Figure 1 – HMS reference architecture diagram . 8
Figure 2 – Bit transmission order . 11

Table 1 – Transponder type classifications . 6
Table 2 – HMS document family . 9
Table 3 – Spectral limits by geographical area (North America and Europe) . 10
Table 4 – HMS PHY channel RF and modulation specifications . 12

+AMD1:2015 CSV  IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring –
Physical (PHY) layer specification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60728-7-1 edition 1.1 contains the first edition (2003-10) [documents 100/576/CDV and
100/683/RVC] and its amendment 1 (2015-04) [documents 100/2417/FDIS and 100/2481/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions and deletions are displayed in red, with deletions being
struck through. A separate Final version with all changes accepted is available in this
publication.
– 4 – IEC 60728-7-1:2003
+AMD1:2015 CSV  IEC 2015
International Standard IEC 60728-7-1 has been prepared by technical area 5: Cable networks
for television signals, sound signals and interactive services, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The following differences exist in some countries:
The Japanese de facto standard (NCTEA S-006) concerning requirements for the HFC
outside plant management, which was published in 1995, has already been available in
Japan. The purpose of this standard is to support the design and implementation of
interoperable management systems for HFC cable networks used in Japan. (see Table 4)
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
+AMD1:2015 CSV  IEC 2015
INTRODUCTION
Standards of the IEC 60728 series deal with cable networks for television signals, sound
signals and interactive services including equipment, systems and installations for
 head-end reception, processing and distribution of television and sound signals and their
associated data signals, and
 processing, interfacing and transmitting all kinds of signals for interactive services
using all applicable transmission media.
All kinds of networks like
 CATV-networks,
 MATV-networks and SMATV-networks,
 individual receiving networks
and all kinds of equipment, systems and installations installed in such networks, are within
this scope.
Standards and other deliverables of the IEC 60728 series deal with cable networks including
equipment and associated methods of measurement for headend reception, processing and
distribution of television and sound signals and for processing, interfacing and transmitting all
kinds of data signals for interactive services using all applicable transmission media. These
signals are typically transmitted in networks by frequency-multiplexing techniques.
This includes for instance
 regional and local broadband cable networks,
 extended satellite and terrestrial television distribution systems,
 individual satellite and terrestrial television receiving systems,
and all kinds of equipment, systems and installations used in such cable networks, distribution
and receiving systems.
The extent of this standardization work is from the antennas, and/or special signal source
inputs to the headend or other interface points to the network up to the system outlet or the
terminal input, where no system outlet exists of the customer premises equipment.
The standardization work will consider coex
...

IEC 60728-7-1 ®
Edition 1.0 2003-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)
layer specification
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 7-1: Surveillance de l'état des installations extérieures des réseaux
hybrides à fibre optique et câble coaxial – Spécification de la couche physique
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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IEC 60728-7-1 ®
Edition 1.0 2003-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –

Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)

layer specification
Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –

Partie 7-1: Surveillance de l'état des installations extérieures des réseaux

hybrides à fibre optique et câble coaxial – Spécification de la couche physique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 35.100.10; 33.160; 33.040 ISBN 978-2-83220-238-8

– 2 – 60728-7-1  IEC:2003
CONTENTS
FOREWORD . 3
INTRODUCTION . 5

1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.10 Abbreviated terms . 8
4 HMS reference architecture forward and return channel specifications . 9
4.1 HMS specification documents . 9
4.2 Functional assumptions . 10
5 Physical layer specification . 10
5.1 Separate forward and return channels . 10
5.2 Single forward and return path channels . 11
5.3 Byte-based transmission . 11
5.4 Byte formats and transmission order . 11
5.5 Packet-based transmission . 11
5.6 Duplex operation . 11
5.7 Forward and return channel specifications . 11
5.8 Media access control layer interface . 18
5.9 RF cut-off . 18

Bibliography . 19

Figure 1 – HMS Reference architecture diagram . 9
Figure 2 – Bit transmission order . 11

Table 1 – Transponder type classifications . 6
Table 2 – HMS document family . 9
Table 3 – Spectral limits by geographical area . 10
Table 4 – HMS PHY channel RF and modulation specifications . 12

60728-7-1  IEC:2003 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –

Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring –
Physical (PHY) layer specification

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60728-7-1 has been prepared by technical area 5: Cable networks
for television signals, sound signals and interactive services, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This bilingual version (2012-08) corresponds to the monolingual English version, published in
2003-10.
This standard was submitted to the national committees for voting under the Fast Track
Procedure as the following documents:
CDV Report on voting
100/576/CDV 100/683/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

– 4 – 60728-7-1  IEC:2003
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The following differences exist in some countries:
The Japanese de facto standard (NCTEA S-006) concerning requirements for the HFC
outside plant management, which was published in 1995, has already been available in
Japan. The purpose of this standard is to support the design and implementation of
interoperable management systems for HFC cable networks used in Japan. (see Table 4)

60728-7-1  IEC:2003 – 5 –
INTRODUCTION
Standards of the IEC 60728 series deal with cable networks for television signals, sound
signals and interactive services including equipment, systems and installations for
• head-end reception, processing and distribution of television and sound signals and their
associated data signals, and
• processing, interfacing and transmitting all kinds of signals fo
...

IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)
layer specification
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 7-1: Surveillance de l'état des installations extérieures des réseaux
hybrides à fibre optique et câble coaxial – Spécification de la couche
physique (PHY)
IEC 60728-7-1:2013-10+AMD1:2015-04 CSV(en-fr)

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IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable networks for television signals, sound signals and interactive services –

Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)

layer specification
Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –

Partie 7-1: Surveillance de l'état des installations extérieures des réseaux

hybrides à fibre optique et câble coaxial – Spécification de la couche

physique (PHY)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.040.40; 33.160.01; 35.100.10 ISBN 978-2-8322-7593-1

IEC 60728-7-1 ®
Edition 1.1 2015-04
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Cable networks for television signals, sound signals and interactive services –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring – Physical (PHY)
layer specification
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 7-1: Surveillance de l'état des installations extérieures des réseaux
hybrides à fibre optique et câble coaxial – Spécification de la couche
physique (PHY)
IEC 60728-7-1:2013-10+AMD1:2015-04 CSV(en-fr)

– 2 – IEC 60728-7-1:2003+AMD1:2015 CSV
 IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.10 Abbreviated terms . 8
4 HMS reference architecture forward and return channel specifications . 8
4.1 HMS specification documents . 9
4.2 Functional assumptions . 9
5 Physical layer specification . 10
5.1 Separate forward and return channels . 10
5.2 Single forward and return path channels . 10
5.3 Byte-based transmission . 11
5.4 Byte formats and transmission order . 11
5.5 Packet-based transmission . 11
5.6 Duplex operation . 11
5.7 Forward and return channel specifications . 11
5.8 Media access control layer interface . 18
5.9 RF cut-off . 18
Bibliography . 19

Figure 1 – HMS reference architecture diagram . 9
Figure 2 – Bit transmission order . 11

Table 1 – Transponder type classifications . 6
Table 2 – HMS document family . 9
Table 3 – Spectral limits by geographical area (North America and Europe) . 10
Table 4 – HMS PHY channel RF and modulation specifications . 12

 IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –
Part 7-1: Hybrid Fibre Coax Outside Plant status monitoring –
Physical (PHY) layer specification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60728-7-1 edition 1.1 contains the first edition (2003-10) [documents 100/576/CDV and
100/683/RVC] and its amendment 1 (2015-04) [documents 100/2417/FDIS and 100/2481/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red text. A
separate Final version with all changes accepted is available in this publication.

– 4 – IEC 60728-7-1:2003+AMD1:2015 CSV
 IEC 2015
International Standard IEC 60728-7-1 h
...