1、 Reference numberISO/IEC 13239:2002(E)ISO/IEC 2002Information technology Telecommunications and information exchange between systems High-level data link control (HDLC) procedures Technologies de linformation Tlcommunications et change dinformation entre systmes Procdures de commande de liaison de d
2、onnes haut niveau (HDLC) National Standard of CanadaCAN/CSA-ISO/IEC 13239:04(ISO/IEC 13239:2002)International Standard ISO/IEC 13239:2002 (third edition, 2002-07-15), has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 13239:04, which has been approved as a NationalStandard of
3、 Canada by the Standards Council of Canada.ISBN 1-55397-248-1 January 2004The Canadian Standards Association, which The Standards Council of Canada is theoperates under the name CSA International coordinating body of the National Standards system, (CSA), under whose auspices this National Standard h
4、as a federation of independent, autonomousbeen produced, was chartered in 1919 and accredited organizations working towards the furtherby the Standards Council of Canada to the National development and improvement of voluntaryStandards system in 1973. It is a not-for-profit, standardization in the n
5、ational interest.nonstatutory, voluntary membership association The principal objects of the Council are to foster engaged in standards development and certification and promote voluntary standardization as a means activities. of advancing the national economy, benefiting theCSA standards reflect a
6、national consensus of producers health, safety, and welfare of the public, assisting and users including manufacturers, consumers, and protecting the consumer, facilitating domestic retailers, unions and professional organizations, and and international trade, and furthering internationalgovernmenta
7、l agencies. The standards are used widely cooperation in the field of standards.by industry and commerce and often adopted by A National Standard of Canada is a standard whichmunicipal, provincial, and federal governments in their has been approved by the Standards Council ofregulations, particularl
8、y in the fields of health, safety, Canada and one which reflects a reasonablebuilding and construction, and the environment. agreement among the views of a number of capableIndividuals, companies, and associations across Canada individuals whose collective interests provide to theindicate their supp
9、ort for CSAs standards development greatest practicable extent a balance ofby volunteering their time and skills to CSA Committee representation of producers, users, consumers, andwork and supporting the Associations objectives others with relevant interests, as may be appropriatethrough sustaining
10、memberships. The more than 7000 to the subject in hand. It normally is a standardcommittee volunteers and the 2000 sustaining which is capable of making a significant and timelymemberships together form CSAs total membership contribution to the national interest.from which its Directors are chosen.
11、Sustaining Approval of a standard as a National Standard ofmemberships represent a major source of income for Canada indicates that a standard conforms to theCSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing se
12、rvices Council of Canada. Approval does not refer to thein support of and as an extension to its standards technical content of the standard; this remains thedevelopment activities. To ensure the integrity of its continuing responsibility of the accreditedcertification process, the Association regul
13、arly and standards-development organization.continually audits and inspects products that bear the Those who have a need to apply standards areCSA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex in whenever practicable. These standards are su
14、bject Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres across Canada and inspection and testing to obtain the latest edition from the organizationagencies in eight countries. Since 1919, the Association preparing the standard.has developed
15、the necessary expertise to meet its The responsibility for approving National Standards corporate mission: CSA is an independent service of Canada rests with theorganization whose mission is to provide an open and Standards Council of Canadaeffective forum for activities facilitating the exchange of
16、 270 Albert Street, Suite 200goods and services through the use of standards, Ottawa, Ontario, K1P 6N7certification and related services to meet national and Canadainternational needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississau
17、ga, Ontario, L4W 5N6CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationInformation
18、 technology Telecommunications and information exchangeCAN/CSA-ISO/IEC 13239:04 between systems High-level data link control (HDLC) proceduresJanuary 2004 CSA/1CAN/CSA-ISO/IEC 13239:04Information technology Telecommunications andinformation exchange betweensystems High-level data linkcontrol (HDLC)
19、proceduresCSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committe
20、e 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph and
21、Telephone Consultative Committee (ITU-T).This Standard supersedes CAN/CSA-ISO/IEC 13239-01 (adoption of ISO/IEC 13239:2000).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Ca
22、nada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Up
23、date orcontact a CSA Sales representative. This Standard has been formally approved, without modification, by the Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of CanadaJanuary 2004 Canadian Standards Association 2004All rights reserved. No part o
24、f this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regard
25、ing this National Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 13239:2002(E)ISO/IEC 2002INTERNATIONAL STANDARD ISO/IEC13239Third edition2002-07-
26、15Information technology Telecommunications and information exchange between systems High-level data link control (HDLC) procedures Technologies de linformation Tlcommunications et change dinformation entre systmes Procdures de commande de liaison de donnes haut niveau (HDLC) ISO/IEC 13239:2002(E) P
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30、 2002 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 ISO at the address below or ISOs member body in the
31、country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch ii ISO/IEC 2002 All rights reservedISO/IEC 13239:2002(E) ISO/IEC 2002 All rights reserved iiiContents Page Foreword.v Introduction .vi 1
32、 Scope1 2 Normative references .2 3 Definitions, acronyms and abbreviations.3 3.1 Definitions.3 3.2 Acronyms and abbreviations.8 4 HDLC frame structure 10 4.1 Frame formats 11 4.2 Elements of the frame 12 4.3 Transparency15 4.4 Transmission considerations .17 4.5 Inter-frame time fill .17 4.6 Invali
33、d frame 17 4.7 Extensions .18 4.8 Addressing conventions .18 4.9 Frame format field .19 5 HDLC elements of procedures 21 5.1 Data link channel states .21 5.2 Modes 22 5.3 Control field formats25 5.4 Control field parameters .27 5.5 Commands and responses .31 5.6 Exception condition reporting and rec
34、overy .53 6 HDLC classes of procedures58 6.1 Types of data station 59 6.2 Configurations60 6.3 Operational modes .60 6.4 Addressing scheme.60 6.5 Send and receive state variables .60 6.6 Fundamental classes of procedures 60 6.7 Optional functions62 6.8 Consistency of classes of procedures 62 6.9 Con
35、formance to the HDLC classes of procedures.62 6.10 Method of indicating classes and optional functions.63 6.11 Unbalanced operation (point-to-point and multipoint) 66 6.12 Balanced operation (point-to-point) .69 6.13 Unbalanced connectionless operation (point-to-point and multipoint) .73 6.14 Balanc
36、ed connectionless operation (point-to-point)76 6.15 Uses of the optional functions78 7 General purpose Exchange Identification (XID) frame85 7.1 General purpose XID frame information field structure .85 7.2 General purpose XID frame information field encoding85 7.3 Single-frame exchange negotiation
37、process91 7.4 Frame check sequence negotiation rules 92 7.5 Rules for negotiation use of the frame format field in non-basic frame format mode.93 8 Resolution/negotiation of data link layer address in switched environments .93 8.1 Operational requirements .93 ISO/IEC 13239:2002(E) iv ISO/IEC 2002 Al
38、l rights reserved8.2 Address resolution . 94 Annex A (informative) Explanatory notes on the implementation of the frame checking sequence 95 Annex B (informative) Example of the use of commands and responses 97 Annex C (informative) Time-out function considerations for NRM, ARM and ABM 118 Annex D (
39、informative) Examples of typical HDLC procedural subsets 120 Annex E (informative) Illustrative examples of 16/32-bit FCS negotiation 123 Annex F (informative) Guidelines for communicating with LAPB X.25 DTEs 125 Annex G (informative) Examples of information field encoding in multi-selective reject
40、frames 126 Annex H (normative) Frame format types. 127 ISO/IEC 13239:2002(E) ISO/IEC 2002 All rights reserved vForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National
41、 bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Ot
42、her international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rul
43、es given in the ISO/IEC Directives, Part 3. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires app
44、roval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 13239 was
45、 prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between systems. This third edition cancels and replaces the second edition (ISO/IEC 13239:2000), which has been technically revised. It also cancels and repla
46、ces ISO/IEC 3309:1993, ISO/IEC 4335:1993, ISO/IEC 7809:1993 and ISO/IEC 8885:1993. Annex H forms a normative part of this International Standard. Annexes A to G are for information only. ISO/IEC 13239:2002(E) vi ISO/IEC 2002 All rights reservedIntroduction This third edition adds a new frame format
47、type to Annex H Frame format types. This frame format type is used in those environments where additional error protection, identification of both the source and the destination(s), and/or longer frame sizes are needed. High-level data link control (HDLC) procedures are designed to permit synchronou
48、s or start/stop, code-transparent data transmission. The normal cycle of the code-transparent data communication between two data stations consists of the transfer of frames containing information from the data source to the data sink acknowledged by a frame in the opposite direction. Generally, unt
49、il the data station comprising the data source receives an acknowledgement, it holds the original information in memory in case the need should arise for retransmissions. In those situations that require it, data sequence integrity between the data source and the data sink is effected by means of a numbering scheme, which is cyclic within a specified modulus and measured in terms of frames. An independent numbering scheme is used for each data source/data sink combination on the data link. The acknowled
