1、 National Standard of CanadaCAN/CSA-ISO/IEC 15056:02(ISO/IEC 15056:1997)International Standard ISO/IEC 15056:1997 (first edition, 1997-05-15), has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 15056:02, which has been approved as a National Standard of Canadaby the Standards
2、 Council of Canada.ISBN 1-55324-671-3 March 2002Reference numberISO/IEC 15056:1997(E)The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose coordinating body of the National Standards system, auspices this National Standard has been produced, a federation of inde
3、pendent, autonomouswas chartered in 1919 and accredited by the Standards organizations working towards the furtherCouncil of Canada to the National Standards system in development and improvement of voluntary1973. It is a not-for-profit, nonstatutory, voluntary standardization in the national intere
4、st.membership association engaged in standards The principal objects of the Council are to foster development and certification activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and us
5、ers including manufacturers, health, 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 wid
6、ely 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 governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, bui
7、lding and construction, Canada 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 practi
8、cable extent a balance ofdevelopment 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 i
9、n 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 contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National S
10、tandard ofSustaining memberships 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 ref
11、er 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 responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularl
12、y 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 its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch
13、 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 preparing the standard.Association has developed the necessary expertise to The respons
14、ibility 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 Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and
15、 services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association178 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaAlthough the intended p
16、rimary 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 AssociationCAN/CSA-ISO/IEC 15056:02 signalling protocol Transit counter
17、 additional network featureInformation technology Telecommunications and information exchangebetween systems Private Integrated Services Network Inter-exchangeMarch 2002 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 15056:02Information technology Telecommunications andinformation exchange betw
18、eensystems Private IntegratedServices Network Inter-exchangesignalling protocol Transitcounter additional network featureCSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information
19、 Technology (TCIT),Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation 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 me
20、mber of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deem
21、ed acceptable for use in Canada. (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 Produc
22、ts catalogue or CSA Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythese Committees and has been approved as a National Standard of Canada by the Standards Council ofCanada.March 2002 Canadian Standards Association 2002All rights r
23、eserved. No part of 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”
24、. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 178 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R31-800-463-6727 416-747-4044www.csa.caISO/IEC 15056: 1997 (E) Contents iv Foreword Introduction V 1 1 Scope 1 2 Conformance 1 3 Normative
25、 references 2 4 Definitions 2 4.1 External definitions 3 5 List of acronyms 3 6 Signalling protocol for the support of ANF-TC 6.1 ANF-TC description 3 6.2 ANF-TC operational requirements 3 6.2.1 Requirements on the Originating PINX 3 6.2.2 Requirements on the Terminating PINX 3 6.2.3 Requirements on
26、 a Transit PINX 3 3 6.3 ANF-TC coding requirements 6.3.1 Transit counter information element 3 6.3.2 Messages 4 4 6.4 ANF-TC signalling procedures 6.4.1 Actions at the Originating PINX 6.4.2 Actions at the Terminating PINX 6.4.3 Actions at a Transit PINX 6.4.4 Actions at an Incoming Gateway PINX 6.4
27、.5 Actions at an Outgoing Gateway PINX 6.5 Protocol interactions between ANF-TC and other supplementary services and ANFs 5 6.5.1 Interaction with Calling Name Identification Presentation (SS-CNIP) 5 6.5.2 Interaction with Connected Name Identification Presentation (SS-CONP) 5 6.5.3 Interaction with
28、 Completion of Calls to Busy Subscribers (SS-CCBS) 5 6.5.4 Interaction with Completion of Calls on No Reply (SS-CCNR) 5 6.5.5 Interaction with Call Transfer (SS-CT) 5 6.5.6 Interaction with Call Forwarding Unconditional (SS-CFU) 5 6.5.7 Interaction with Call Forwarding Busy (SS-CFB) 5 6.5.8 Interact
29、ion with Call Forwarding No Reply (SS-CFNR) 5 6.5.9 Interaction with Call Deflection (SS-CD) 6 6.5.10 Interaction with Path Replacement (ANF-PR) 6 6.5.11 Interaction with Call Offer (SS-CO) 6 6.5.12 Interaction with Do Not Disturb (SS-DND) 6 0 ISO/IEC 1997 All rights reserved. Unless otherwise speci
30、fied, 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 the publisher. ISO/IEC Copyright Office l Case postale 56 l CH-1211 Geneve 20 l Switzerland OISO/IEC 6.5.13
31、Interaction with Do Not Disturb Override (SS-DNDO) 6.5.14 Interaction with Call Intrusion (SS-CI) 6.5.15 Interaction with Call Interception (ANF-CINT) 6.5.16 Interaction with Recall (SS-RE) 6.5.17 Interaction with Advice of Charge (SS-AOC) Annex A - Protocol Implementation Conformance Statement (PIC
32、S) proforma ISO/IECl5056:1997(E) . . . 111 ISO/IEC 15056: 1997 (E) OISO/IEC Foreword IS0 (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of IS0 or
33、IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other international organizations, go
34、vernmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the field of information technology, IS0 and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national
35、 bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. International Standard ISOAEC 15056 was prepared by ECMA (as ECMA-225) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC
36、JTC 1, Information technology, in parallel with its approval by national bodies of IS0 and IEC. Annex A forms an integral part of this International Standard. iv OISO/IEC ISO/IEC 15056: 1997 (E) Introduction This International Standard is one of a series of standards defining services and signalling
37、 protocols applicable to Private Integrated Services Networks. The series uses the ISDN concepts as developed by ITU-T (formerly CCITT) and is also within the framework of standards for open systems interconnection as defined by ISO. This International Standard additional network feature. specifies
38、the signalling protocol for use at the Q reference point in support of the Transit Counter The 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 ISOLIEC JTC 1, ITU-T, ETSI and other inter
39、national and national standardization bodies. It represents a pragmatic and widely based consensus. This page intentionally left blank INTERNATIONAL STANDARD 0 ISO/IEC ISO/IEC 15056:1997 (E) Information technology - Telecommunications and information exchange between systems - Private Integrated Ser
40、vices Network - Inter-exchange signalling protocol - Transit counter additional network feature 1 Scope This International Standard specifies the signalling protocol for the support of the Transit Counter additional network feature (ANF-TC) at the Q reference point between Private Integrated Service
41、s Network Exchanges (PINXs) connected together within a Private Integrated Services Network (PISN). ANF-TC is a feature that limits the number of Transit PINXs that a call setup request may be routed through e.g., to protect the network against indefinite looping. The Q reference point is defined in
42、 ISO/IEC 11579- 1. Service specifications are produced in three stages and according to the method specified in CCITT Recommendation I. 130. This International Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 s
43、pecifications in ISO/IEC 15055. The signalling protocol for ANF-TC operates in association with the signalling protocols for basic circuit switched call control (as specified in ISO/IEC 11572) and call independent (connection oriented) signalling connections (as specified in ISOIIEC 11582). This Int
44、ernational Standard also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between ANF-TC and other supplementary services and ANFs. This International Standard is applicable to PINXs that can interconnect to form a PISN. 2 Conformance In
45、order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Protocol Implementation Conformance Statement (PICS) proforma in annex A. Conformance to this International Standard includes conforming to those clauses that specify protocol interactions betwee
46、n ANF-TC and other supplementary services and ANFs for which signalling protocols at the Q reference point are supported in accordance with the stage 3 standards concerned. 3 Normative references The following standards contain provisions which, through reference in this text, constitute provisions
47、of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards ind
48、icated below. Members of IEC and IS0 maintain registers of currently valid International Standards. ISO/IEC 11572: 1997, ISO/IEC 11574: 1994, ISO/IEC 11579-l: 1994, ISO/IEC 11582: 1995, ISOIIEC 13869: 1995, Information technology - Telecommunications and information exchange between systems - Privat
49、e Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and protocol. Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Circuit-mode 64 kbit/s bearer services - Service description, functional capabilities and information flows. Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Part I: Referen
