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1、Reference number ISO/IEC 21411:2001(E) ISO/IEC 2001 INTERNATIONAL STANDARD ISO/IEC 21411 First edition 2001-08-15 Information technology Telecommunications and information exchange between systems Corporate telecommunication networks Signalling interworking between QSIG and H.323 Call diversion supp
2、lementary services Technologies de linformation Tlcommunications et change dinformation entre systmes Rseaux de tlcommunications corporatifs Signalisation de travail entre QSIG et H.323 Services supplmentaires de diversion dappel Copyright International Organization for Standardization Provided by I
3、HS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21411:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensin
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6、aken 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 given below. ISO/IEC 2001 All rights reserved. Unless otherwise specified, no part of this publication may be repr
7、oduced 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 country of the requester. ISO copyright office Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 2
8、2 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO/IEC 2001 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007
9、 20:56:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21411:2001(E) ISO/IEC 2001 All rights reserved iii Contents Forewordv Introductionvi 1Scope1 2Conformance1 3Normative references1 4Definitions2 4.1External definitions2 4.2Other definitions2 4.2.1Association
10、D2 4.2.2Association E2 4.2.3Association F2 4.2.4Association G2 4.2.5Entity A2 4.2.6Entity B2 4.2.7Entity B2 4.2.8Entity C2 4.2.9Entity D2 4.2.10Entity E3 4.2.11Entity F3 4.2.12Entity G3 4.2.13Entity H3 4.2.14Gateway3 4.2.15Leg A3 4.2.16Leg B3 4.2.17Leg B3 4.2.18Leg C3 4.2.19Rerouting entity3 4.2.20S
11、cenario A13 4.2.21Scenario A23 4.2.22Scenario B13 4.2.23Scenario B23 4.2.24Scenario C13 4.2.25Scenario C23 4.2.26Scenario D13 4.2.27Scenario D23 4.2.28Scenario E13 4.2.29Scenario E23 4.2.30Scenario F13 4.2.31Scenario F23 4.2.32Scenario G13 4.2.33Scenario G23 5Acronyms4 6Service architecture4 6.1Serv
12、ice architecture for invocation and operation4 6.1.1ISO/IEC 13873 service architecture4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo reproduction or networking
13、permitted without license from IHS -,-,- ISO/IEC 21411:2001(E) iv ISO/IEC 2001 All rights reserved 6.1.2H.450.3 service architecture5 6.1.3Scenarios for interworking5 6.1.4Determination of the location of the rerouting entity when interworking6 6.2Service architecture for activation, deactivation an
14、d interrogation6 6.2.1ISO/IEC 13873 service architecture6 6.2.2H.450.3 service architecture7 6.2.3Scenarios for interworking7 7Protocol interworking General requirements8 8Protocol interworking Messages and APDUs8 8.1Scenario A18 8.2Scenario A210 8.3Scenario B111 8.4Scenario B212 8.5Scenario C112 8.
15、6Scenario C213 8.7Scenario D113 8.8Scenario D214 8.9Scenario E114 8.10Scenario E215 8.11Scenario F115 8.12Scenario F216 8.13Scenario G116 8.14Scenario G217 Annexes A - Implementation Conformance Statement (ICS) proforma18 B - Example message sequence diagrams28 Copyright International Organization f
16、or Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21411:2001(E) ISO/IEC 2001 All rights reserved v Foreword ISO (the Internatio
17、nal Organization for Standardization) and IEC (the International 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 b
18、y the respective organization to deal with particular fields of 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. International
19、Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to nation
20、al bodies for voting. Publication as an International 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 r
21、esponsible for identifying any or all such patent rights. International Standard ISO/IEC 21411 was prepared by ECMA (as ECMA-309) 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 bod
22、ies of ISO and IEC. Annex A forms a normative part of this International Standard. Annex B is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo
23、 reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21411:2001(E) vi ISO/IEC 2001 All rights reserved Introduction This International Standard is one of a series of Standards defining the interworking of services and signalling protocols deployed in Corporate telecommunicati
24、on Networks (CNs). The 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 diversion supplementar
25、y services between a Private Integrated Services Network (PISN) and a packet-based private telecommunications 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-base
26、d network are based on 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 b
27、odies. It represents a pragmatic and widely based consensus. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo reproduction or networking permitted without license f
28、rom IHS -,-,- INTERNATIONAL STANDARDISO/IEC 21411:2001(E) Information technology - Telecommunications and information exchange between systems - Corporate telecommunication networks - Signalling interworking between QSIG and H.323 - Call diversion supplementary services ISO/IEC 2001 All rights reser
29、ved 1 1Scope This International Standard specifies signalling interworking between “QSIG” and “H.323” in support of call diversion supplementary services within a Corporate telecommunication Network (CN). “QSIG” is a signalling protocol that operates at the Q reference point between Private Integrat
30、ed Services eXchanges (PINX) within a Private Integrated Services Network (PISN). The Q reference point is defined in ISO/IEC 11579-1. A PISN provides circuit-switched basic services and supplementary services to its users. QSIG is specified in other Standards, in particular ISO/IEC 11572 (call cont
31、rol in support of basic services), ISO/IEC 11582 (generic functional protocol for the support of supplementary services) and a number of standards specifying individual supplementary services. ISO/IEC 13873 specifies the QSIG protocol in support of call diversion services. “H.323” is a set of signal
32、ling protocols for the support of voice or multimedia communication within a packet network, in particular a packet network that uses the Internet Protocol (IP) as its network layer protocol (IP network). H.323 signalling protocols operate between endpoints in an IP network, either indirectly via on
33、e or more gatekeepers, or directly. An endpoint can be a terminal or a gateway to another network. H.323 is an “umbrella” recommendation referring to various ITU-T recommendations,inparticularRecommendationsH.225.0andH.245(basiccommunicationcapabilities)and Recommendation H.450.1 (generic functional
34、 protocol for the support of supplementary services). Recommendation H.450.3 specifies the H.323 protocol in support of call diversion services. NOTE - H.450.3 applies only to the 1998 version of H.323 (also known as H.323 version 2) and to later versions. In both ISO/IEC 13873 (QSIG) and ITU-Recomm
35、endation H.450.3 (H.323), the call diversion supplementary services are Call Forwarding Unconditional (SS-CFU), Call Forwarding Busy (SS-CFB), Call Forwarding No Reply (SS-CFNR) and Call Deflection (SS-CD). These supplementary services apply during call establishment and provide diversion of an inco
36、ming call to another destination. Interworking between QSIG and H.323 permits a call originating at a user of a PISN to terminate at a user of an IP network, or a call originating at a user of an IP network to terminate at a user of a PISN. This International Standard provides the following addition
37、al capabilities: ?a call originating from a PISN and destined for a user of an H.323 network to be diverted by the H.323 network to an alternative destination; ?a call originating from an H.323 network and destined for a user of a PISN to be diverted by the PISN to an alternative destination; ?a cal
38、l destined for a user of a PISN to be diverted to an alternative destination where that alternative destination is in an H.323 network; ?a call destined for a user of an H.323 network to be diverted to an alternative destination where that alternative destination is in a PISN. This International Sta
39、ndard is applicable to any interworking unit that can act as a gateway between a PISN employing QSIG and an IP network employing H.323. 2Conformance In order to conform to this International Standard, a gateway shall satisfy the requirements identified in the Implementation Conformance Statement (IC
40、S) proforma in annex A. 3Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. How
41、ever, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and
42、 IEC maintain registers of currently valid International Standards. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/11/2007 20:56:10 MDTNo reproduction or networking permitted without li
43、cense from IHS -,-,- ISO/IEC 21411:2001(E) 2 ISO/IEC 2001 All rights reserved ISO/IEC 11572:2000, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and proto
44、col ISO/IEC 11579-1:1994, Information technology - Telecommunications and information exchange between systems - Private integrated services network - Part 1: Reference configuration for PISN Exchanges (PINX) ISO/IEC 11582:1995, Information technology - Telecommunications and information exchange be
45、tween systems - Private Integrated Services Network - Generic functional protocol for the support of supplementary services - Inter-exchange signalling procedures and protocol ISO/IEC 13873:1995, Information technology - Telecommunications and information exchange between systems - Private Integrate
46、d Services Network - Inter-exchange signalling protocol - Call diversion supplementary services ISO/IEC 21409:2001, Information technology - Telecommunications and information exchange between systems - Corporate telecommunication networks - Signalling interworking between QSIG and H.323 - Generic f
47、unctional protocol for the support of supplementary services ITU-T Rec. H.225.0:1998 (or later edition), Call signalling protocols and media stream packetization for packet-based multimedia communication systems ITU-T Rec. H.245:1998 (or later edition), Control protocol for multimedia communication
48、ITU-T Rec. H.323:1998 (or later edition), Packet-based multimedia communications systems ITU-T Rec. H.450.1:1998, Generic functional protocol for the support of supplementary services in H.323 ITU-T Rec. H.450.3:1998, Call diversion supplementary service for H.323 4Definitions For the purposes of this International Standard, the following definitions apply. 4.1External definitions This International Standard uses the following terms defined in other documents: Call(ISO/IEC 21409) Corporate telecommunication Network (C