IEC_60728-7-2-2003.pdf

INTERNATIONALSTANDARDIEC60728-7-2First edition2003-10Cable networks for television signals,sound signals and interactive services Part 7-2:Hybrid Fibre Coax Outside PlantStatus Monitoring Media access Control(MAC)Layer SpecificationReference numberIEC 60728-7-2:2003(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.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.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC60728-7-2First edition2003-10Cable networks for television signals,sound signals and interactive services Part 7-2:Hybrid Fibre Coax Outside PlantStatus Monitoring Media access Control(MAC)Layer Specification IEC 2003 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chXFor price,see current cataloguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60728-7-2 IEC:2003(E)CONTENTSFOREWORD.4INTRODUCTION.61Scope.72Normative references.73Terms,definitions and abbreviations.84Reference architecture forward and return channel specifications.105Media access control layer specification.105.1Overview.105.2MAC packet transport.115.3MAC packet structure.135.4MAC packet delimiters.185.5MAC protocol data units(PDUs).186MAC protocol operation.296.1Non-volatile parameters.296.2Duplex capabilities.296.3Packet priorities.296.4Packet reception.296.5NE responses.306.6Message sequence numbers and transaction synchronization.306.7Solicited messages.316.8Autonomous(unsolicited)messages.316.9Return channel transmissions.356.10 MAC state machines.35Annex A(informative)Operational details.38A.1 Introduction.38A.2 Time of day.38A.3 Firmware downloads.38A.4 NE addressing.38A.5 Alarm processing HMS MAC protocol.39A.6 Automatic channel discovery.43A.7 Auto-registration.44A.8 Configuration changes and SNMP trap generation.45Figure 1 Reference architecture diagram.10Figure 2 Bit transmission order.12Figure 3 MAC packet structure.13Figure 4 MAC header control byte Bit definition.13Figure 5 MAC header sequence byte Bit definition.16Figure 6 MAC PDU structure.18Figure 7 STATRESP STATUS byte Bit definition.20Figure 8 Return channel transmission permitted.35LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60728-7-2 IEC:2003(E)3 Figure 9 Contention state diagram.36Figure 10 Backoff state diagram.37Figure A.1 Property MIB usage.39Table 1 Transponder type classifications.7Table 2 Generic MAC packet structure.13Table 3 Protocol field values.14Table 4 MAC PDUs.19Table 5 Possible MAC protocol transactions.19Table 6 NAK PDU format.20Table 7 ACK PDU format.20Table 8 STATRQST PDU format.20Table 9 STATRES