1、 Reference numberISO/IEC TR 21890:2001(E)ISO/IEC 2001Information technology Telecommunications and information exchange between systems Interoperation of PISNs with IP networks Technologies de linformation Tlcommunications et change dinformation entre systmes Interopration de PISN avec des rseaux IP
2、 National Standard of CanadaCAN/CSA-ISO/IEC TR 21890:04(ISO/IEC TR 21890:2001)Technical Report ISO/IEC TR 21890:2001 (first edition, 2001-10-01) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC TR 21890:04, which has been approved as aNational Standard of Canada by the Stan
3、dards Council of Canada.ISBN 1-55397-272-4 January 2004The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federati
4、on of independent, autonomousthe Standards Council of Canada to the National organizations working towards the furtherStandards system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.enga
5、ged in standards development and certification The principal objects of the Council are to foster activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, h
6、ealth, safety, and welfare of the public, assisting consumers, retailers, unions and professional and protecting the consumer, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce c
7、ooperation in the field of standards.and often adopted by municipal, provincial, and A National Standard of Canada is a standard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada
8、 and one which reflects a reasonableand the environment. agreement among the views of a number of capableIndividuals, companies, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevel
9、opment by volunteering their time and skills to representation of producers, users, consumers, andCSA Committee work and supporting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a stand
10、ardthan 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships together form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining membershi
11、ps represent a major source of Canada indicates that a standard conforms to theincome for CSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support o
12、f and as an extension to its technical content of the standard; this remains thestandards development activities. To ensure the continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and i
13、nspects products Those who have a need to apply standards arethat bear the CSA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic
14、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 preparing the standard.Association has developed the necessary expertise to The responsibility for approving National
15、 Standards meet its corporate mission: CSA is an independent of Canada rests with theservice organization whose mission is to provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of O
16、ttawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough the intended primary application
17、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 AssociationCAN/CSA-ISO/IEC TR 21890:04Information technology Telecommunications and inform
18、ation exchangebetween systems Interoperation of PISNs with IP networksJanuary 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC TR 21890:04Information technology Telecommunications andinformation exchange betweensystems Interoperation of PISNswith IP networksCSA PrefaceStandards development w
19、ithin 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 on Information Technology (ISO/IEC JTC1)
20、 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 (ITU-T).Thi
21、s Technical Report was reviewed by the CSA TCIT under the jurisdiction of the Strategic SteeringCommittee on Information Technology and deemed acceptable for use in Canada. (A committeemembership list is available on request from the CSA Project Manager.) From time to time, ISO/IEC maypublish addend
22、a, corrigenda, etc. The CSA TCIT will review these documents for approval andpublication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update or contacta CSA Sales representative. This Technical Report has been formally approved, without modification, bythe Technical Co
23、mmittee 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 material is
24、 reprinted with permission. Where the words “this Technical Report” appear in the text,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 100, Mississaug
25、a, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC TR 21890:2001(E)ISO/IEC 2001TECHNICAL REPORT ISO/IECTR21890First edition2001-10-01Information technology Telecommunications and information exchange between systems Interoperation of PISNs with IP networks Techno
26、logies de linformation Tlcommunications et change dinformation entre systmes Interopration de PISN avec des rseaux IP ISO/IEC TR 21890:2001(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
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29、 bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2001 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
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31、.iso.ch Printed in Switzerland ii ISO/IEC 2001 All rights reservedISO/IEC TR 21890:2001(E) ISO/IEC 2001 All rights reserved iiiContents Foreword vi Introduction vii 1 Scope 1 2 Normative references 1 3 Definitions 3 3.1 Corporate telecommunication Network (CN) 3 3.2 Internet 3 3.3 Intranet 3 3.4 Int
32、ernet Protocol (IP) 3 3.5 IP network 3 3.6 Private Integrated Services Network (PISN)3.7 Private Integrated services Network eXchange (PINX) 3 3.8 Switched Circuit Network (SCN) 3 3.9 Tunnelling 3 4 Acronyms 3 5 Introduction 5 5.1 Background 5 5.2 Types of network 6 5.3 Arrangements for interworking
33、 of SCNs and IP networks 7 5.4 Arrangements for interconnection of SCN components over IP networks 8 6 General principles of multimedia communication over an IP network6.1 Architecture 9 6.1.1 Media processing and packetization (MPP) functional entity 9 6.1.2 Resource control (RC) functional entity
34、9 6.1.3 Session control (SC) functional entity 10 6.1.4 SC-redirect (SC-R), SC-proxy (SC-P) and RC-proxy (RC-P) functional entities 10 6.1.5 Admission control (AC) functional entities 11 6.1.6 Identity resolution (IR) functional entity6.1.7 Registrar (RGR) and registrant (RGT) functional entities 11
35、 6.1.8 Generic functional architecture (non-interworking)6.1.9 Physical realizations of generic functional architecture for multimedia communication over an IP network (non-interworking) 12 6.1.10 Generic functional architecture for interworking with an SCN 13 6.1.11 Physical realizations of generic
36、 functional architecture for interworking with an SCN 13 6.1.12 Simple terminals 15 6.2 Naming and addressing 16 6.3 Security 16 6.4 Quality of service (QoS) 17 6.5 Mobility 18 7 Standards for multimedia communication over an IP network 18 7.1 Overview 18 7.2 The ITU-T H.323 family of recommendation
37、s 19 7.2.1 Functional architecture 19 7.2.2 Naming and addressing 20 7.2.3 Supplementary services 20 ISO/IEC TR 21890:2001(E) iv ISO/IEC 2001 All rights reserved7.2.4 Security 21 7.2.5 Quality of service 22 7.2.6 Mobility 22 7.3 Other ITU-T standards 22 7.3.1 H.248 22 7.3.2 BICC 23 7.4 IETF specific
38、ations for IP telephony 23 7.4.1 Functional architecture 23 7.4.2 Main protocols 24 7.4.3 Naming and addressing 24 7.4.4 Supplementary services 25 7.4.5 Security 25 7.4.6 Quality of service 26 7.4.7 Mobility 26 7.5 ETSI TIPHON specifications 26 7.6 Terminal specifications from TIA TR-41.3.4 26 8 Int
39、erworking of PISNs and IP networks via a gateway8.1 Architecture 27 8.2 Signalling 28 8.3 Naming and addressing 28 8.3.1 Naming and addressing in PISNs 28 8.3.2 Naming and addressing in IP networks 28 8.3.3 Naming and addressing interworking when H.323 used in the IP network 28 8.3.4 Naming and addr
40、essing interworking when SIP used in the IP network 29 8.4 Supplementary services 29 8.4.1 H.323 supplementary services 29 8.4.2 SIP supplementary services 29 8.5 Security 29 8.6 Quality of service 29 8.7 Mobility 29 8.8 Network management 29 8.9 Aspects requiring further study or standardization wo
41、rk 30 9 Interconnection of remote PISNs via an IP network9.1 Classification of scenarios for the interconnection of PISNs 30 9.2 Solutions for the interconnection of remote PISNs via an IP network 31 9.3 Solution 1 QSIG tunnelling over IP network transport layer protocol 32 9.3.1 Architecture 32 9.3
42、.2 Aspects requiring further study or standardization work 33 9.4 Solution 2 QSIG tunnelling over IP network session control protocol 33 9.4.1 Architecture 33 9.4.2 Aspects requiring further study or standardization work 34 9.5 Solution 3 enhanced QSIG in the IP network9.5.1 Architecture 34 9.5.2 As
43、pects requiring further study or standardization work 34 10 Connection of telephones to a PINX via an IP network 35 10.1 Architecture 35 ISO/IEC TR 21890:2001(E) ISO/IEC 2001 All rights reserved v10.2 Aspect requiring standardization work 37 11 Summary 37 Annexes A - Overview and status of H.323 39
44、B - Overview and status of SIP 42 C - Overview of H.248 / MEGACO protocol 45 D - Architecture for Signalling Transport over IP-networks (SIGTRAN) 46 ISO/IEC TR 21890:2001(E) vi ISO/IEC 2001 All rights reservedForeword ISO (the International Organization for Standardization) and IEC (the Internationa
45、l Electrotechnical Commission) form the specialized system for worldwide 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
46、 technical activity. ISO and IEC technical committees collaborate in 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
47、technical committee, ISO/IEC JTC 1. The main task of technical committees is to prepare International Standards, but in exceptional circumstances a technical committee may propose the publication of a Technical Report of one of the following types: type 1, when the required support cannot be obtaine
48、d for the publication of an International Standard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; type 3, when a technical committee
49、 has collected data of a different kind from that which is normally published as an International Standard (“state of the art”, for example). Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into International Standards. Technical Reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. Technical Reports are drafted in accordance with the
