1、 Reference numberISO/IEC 21991:2002(E)ISO/IEC 2002Information technology Telecommunications and information exchange between systems Corporate Telecommunication Networks Signalling interworking between QSIG and H.323 Call completion supplementary services Technologies de linformation Tlcommunication
2、s et change dinformation entre systmes Rseaux de tlcommunications de corps Travail de signalisation entre QSIG et H.323 Complments de service dachvement dappel National Standard of CanadaCAN/CSA-ISO/IEC 21991:04(ISO/IEC 21991:2002)International Standard ISO/IEC 21991:2002 (first edition, 2002-06-15)
3、 has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 21991:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-270-8 January 2004The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose
4、auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the National organizations working towards the furtherStandards system in 1973. It
5、is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification The principal objects of the Council are to foster activities. and promote voluntary standardization
6、 as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers, unions and professional and protecting the consumer, facilitating domesti
7、c organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often adopted by municipal, provincial, and A National Standard of Canada is a standard whichfederal gover
8、nments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the environment. agreement among the views of a number of capableIndividuals, companies, and associations a
9、cross individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to representation of producers, users, consumers, andCSA Committee work and supporting the Association
10、s others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships together form CSAs total c
11、ontribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates that a standard conforms to theincome for CSAs standards development activities. criteria and proce
12、dures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content of the standard; this remains thestandards development activities. To ensure the continuing responsi
13、bility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply standards arethat bear the CSA Mark. encouraged to use National Standards of CanadaIn addition to i
14、ts head office and laboratory complex whenever practicable. These standards are subject in 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
15、in eight countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsibility for approving National Standards meet its corporate mission: CSA is an independent of Canada rests with theservice organization whose mission is to provide an Standards
16、Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For further information on CSA
17、services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, 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
18、particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 21991:04 interworking between QSIG and H.323 Call completion supplementary servicesInformation technology Telecommunications and information exchangebetween systems Corporate Telecommunication Networks Signalli
19、ngJanuary 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 21991:04Information technology Telecommunications andinformation exchange betweensystems Corporate Telecommunication Networks Signalling interworking betweenQSIG and H.323 Call completionsupplementary servicesCSA PrefaceStandards dev
20、elopment 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 Committee 1 onInformation Technology (ISO/
21、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 andTelephone Consultative Committee (I
22、TU-T).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 Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may
23、 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 Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythe Techn
24、ical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January 2004 Canadian Standards Association 2004All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC mate
25、rial is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 10
26、0, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 21991:2002(E)ISO/IEC 2002INTERNATIONAL STANDARD ISO/IEC21991First edition2002-06-15Information technology Telecommunications and information exchange between systems Corporate Telecommunication Netwo
27、rks Signalling interworking between QSIG and H.323 Call completion supplementary services Technologies de linformation Tlcommunications et change dinformation entre systmes Rseaux de tlcommunications de corps Travail de signalisation entre QSIG et H.323 Complments de service dachvement dappel ISO/IE
28、C 21991:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloa
29、ding this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the Ge
30、neral Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address giv
31、en below. ISO/IEC 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 me
32、mber body in the 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 21991:2002(E) ISO/IEC 2002 All rights reserved iiiContents Page Foreword v I
33、ntroduction vi 1 Scope 1 2 Conformance 1 3 Normative references 1 4 Definitions 2 4.1 External definitions 2 4.2 Other definitions 2 4.2.1 Entity A 2 4.2.2 Entity B 2 4.2.3 Gateway 2 4.2.4 IP network 2 4.2.5 Leg A 2 4.2.6 Scenario A1 2 4.2.7 Scenario A2 2 5 Acronyms 3 6 Service architecture 3 6.1 Se
34、rvice architecture for invocation and operation 3 6.1.1 ISO/IEC 13870 service architecture 3 6.1.2 H.450.9 service architecture 4 6.1.3 Scenarios for interworking 4 6.1.4 Selection of the same gateway for all phases 4 6.2 Options 4 7 Protocol interworking General requirements 5 8 Protocol interworki
35、ng Messages and APDUs8.1 Signalling phase 1 - invocation of call completion8.1.1 Scenario A1 5 8.1.2 Scenario A2 6 8.2 Signalling phase 2 user B available notification 6 8.2.1 Scenario A1 7 8.2.2 Scenario A2 8 8.3 Signalling phase 3 CC call establishment 9 8.3.1 Scenario A1 9 8.3.2 Scenario A2 9 8.4
36、 Signalling phase 4 cancellation of SS-CC8.4.1 Scenario A1 10 8.4.2 Scenario A2 10 9 Protocol interworking content of APDUs 10 9.1 APDU content mapping from QSIG to H.323 11 ISO/IEC 21991:2002(E) iv ISO/IEC 2002 All rights reserved9.1.1 ccbsRequest/ccnrRequest invoke APDU mapping 11 9.1.2 ccbsReques
37、t/ccnrRequest return result APDU mapping9.1.3 ccCancel/ccExecPossible invoke APDU mapping9.2 APDU content mapping from H.323 to QSIG 12 9.2.1 ccbsRequest/ccnrRequest invoke APDU mapping9.2.2 ccbsRequest/ccnrRequest return result APDU mapping9.2.3 ccCancel/ccExecPossible invoke APDU mappingAnnexes A
38、- Implementation Conformance Statement (ICS) proforma 13 B - Message flow examples 20 ISO/IEC 21991:2002(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 worl
39、dwide standardization. National 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 i
40、n fields of mutual interest. Other 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 dra
41、fted in accordance with the rules 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 Inte
42、rnational Standard requires approval 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 p
43、atent rights. ISO/IEC 21991 was prepared by ECMA (as ECMA-326) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. Annex A forms a normative part of this Internat
44、ional Standard. Annex B is for information only. ISO/IEC 21991:2002(E) vi ISO/IEC 2002 All rights reservedIntroduction This International Standard is one of a series of Standards defining the interworking of services and signalling protocols deployed in Corporate telecommunication Networks (CNs). Th
45、e series uses telecommunication concepts as developed by ITU-T and conforms to the framework of International Standards on Open Systems Interconnection as defined by ISO/IEC. This International Standard defines the signalling protocol interworking for call completion supplementary services between a
46、 Private Integrated Services Network (PISN) and a packet-based private telecommunication network based on the Internet Protocol (IP). It is further assumed that the protocol for the PISN part is that defined for the Q reference point (QSIG) and that the protocols for the IP-based network are based o
47、n ITU-T Recommendation H.323. This International Standard is based upon the practical experience of ECMA member companies and the results of their active and continuous participation in the work of ISO/IEC JTC 1, ITU-T, ETSI and other international and national standardization bodies. It represents
48、a pragmatic and widely based consensus. INTERNATIONAL STANDARD ISO/IEC 21991:2002(E) ISO/IEC 2002 All rights reserved 1Information technology Telecommunications and information exchange between systems Corporate Telecommunication Networks Signalling interworking between QSIG and H.323 Call completio
49、n supplementary services 1 Scope This International Standard specifies signalling interworking between “QSIG” and “H.323” in support of call completion supplementary services within a Corporate telecommunication Network (CN). “QSIG” is a signalling protocol that operates at the Q reference point between Private Integrated services Network eXchanges (PINX) within a Private Integrated Services Network (PISN). The Q reference point is defined in ISO/IEC 11
