1、 Reference number ISO/IEC 15991:2003(E) ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC 15991 Second edition 2003-04-01Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Call Priority
2、 Interruption and Call Priority Interruption Protection supplementary services Technologies de linformation Tlcommunications et change dinformation entre systmes Rseau priv intgration de services Spcification, modle fonctionnel et flux dinformations Services supplmentaires dinterruption de priorit d
3、appel et de protection dinterruption de priorit dappel ISO/IEC 15991:2003(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
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6、und, please inform the Central Secretariat at the address given below. ISO/IEC 2003 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 permissi
7、on 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 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All rights rese
8、rvedISO/IEC 15991:2003(E) ISO/IEC 2003 All rights reserved iii Contents Foreword vi Introduction vii 1 Scope 1 2 Conformance 1 3 Normative references 1 4 Terms and definitions 2 4.1 External definitions 2 4.2 Additional network feature 2 4.3 Call, Basic call 2 4.4 Call Priority Interruption Capabili
9、ty Level (CPICL) 2 4.5 Call Priority Interruption Protection Level (CPIPL) 2 4.6 Established call 3 4.7 Impending priority interruption state 3 4.8 Impending priority interruption warning notification 3 4.9 Non-priority call 3 4.10 Priority call 3 4.11 Protected call 3 4.12 Served user 3 4.13 Time t
10、o priority interruption 3 4.14 Unprotected call 3 5 List of acronyms 3 6 SS-CPI stage 1 specification 4 6.1 Description 4 6.1.1 General description 4 6.1.2 Qualifications on applicability to telecommunication services 4 6.2 Procedure 4 6.2.1 Provision/withdrawal 4 6.2.2 Normal procedures 4 6.2.3 Exc
11、eptional procedures 6 6.3 Interaction with other supplementary services and ANFs 6 6.3.1 Calling Name Identification Presentation (SS-CNIP) 6 6.3.2 Connected Name Identification Presentation (SS-CONP) 6 6.3.3 Completion of Call to Busy Subscriber (SS-CCBS) 6 6.3.4 Completion of Call on No Reply (SS-
12、CCNR) 6 6.3.5 Call Transfer (SS-CT) 6 6.3.6 Call Forwarding Unconditional (SS-CFU) 6 6.3.7 Call Forwarding Busy (SS-CFB) 6 6.3.8 Call Forwarding No Reply (SS-CFNR) 6 6.3.9 Call Deflection (SS-CD) 6 6.3.10 Path Replacement (ANF-PR) 6 6.3.11 Call Offer (SS-CO) 6 6.3.12 Call Intrusion (SS-CI) 6 6.3.13
13、Do not Disturb (SS-DND) 6 6.3.14 Do not Disturb Override (SS-DNDO) 6 6.3.15 Advice of Charge (SS-AOC) 6ISO/IEC 15991:2003(E) iv ISO/IEC 2003 All rights reserved 6.3.16 Recall (SS-RE) 6 6.3.17 Call Interception (ANF-CINT) 7 6.3.18 Transit Counter (ANF-TC) 7 6.3.19 Interaction with Wireless Terminal L
14、ocation Registration (SS-WTLR) 7 6.3.20 Interaction with Wireless Terminal Incoming Call (ANF-WTMI) 7 6.3.21 Interaction with Wireless Terminal Outgoing Call (ANF-WTMO) 7 6.3.22 Interaction with Wireless Terminal Authentication of a WTM user (SS-WTAT) 7 6.3.23 Interaction with Wireless Terminal Auth
15、entication of a PISN (SS-WTAN) 7 6.3.24 Message Waiting Indication (SS-MWI) 7 6.3.25 Common Information (ANF-CMN) 7 6.3.26 Call Priority Interruption Protection (SS-CPIP) 7 6.4 Interworking considerations 7 6.5 Overall SDL 7 7 SS-CPIP stage 1 specification 11 7.1 Description 11 7.1.1 General descrip
16、tion 11 7.1.2 Qualifications on applicability to telecommunication services 11 7.2 Procedure 11 7.2.1 Provision/withdrawal 11 7.2.2 Normal procedures 11 7.2.3 Exceptional procedures 12 7.3 Interaction with other supplementary services and ANFs 12 7.3.1 Calling Name Identification Presentation (SS-CN
17、IP) 12 7.3.2 Connected Name Identification Presentation (SS-CONP) 12 7.3.3 Completion of Call to Busy Subscriber (SS-CCBS) 12 7.3.4 Completion of Call on No Reply (SS-CCNR) 12 7.3.5 Call Transfer (SS-CT) 12 7.3.6 Call Forwarding Unconditional (SS-CFU) 12 7.3.7 Call Forwarding Busy (SS-CFB) 12 7.3.8
18、Call Forwarding No Reply (SS-CFNR) 12 7.3.9 Call Deflection (SS-CD) 12 7.3.10 Path Replacement (ANF-PR) 12 7.3.11 Call Offer (SS-CO) 12 7.3.12 Call Intrusion (SS-CI) 12 7.3.13 Do not Disturb (SS-DND) 12 7.3.14 Do not Disturb Override (SS-DNDO) 12 7.3.15 Advice of Charge (SS-AOC) 12 7.3.16 Recall (SS
19、-RE) 13 7.3.17 Call Interception (ANF-CINT) 13 7.3.18 Transit Counter (ANF-TC) 13 7.3.19 Interaction with Wireless Terminal Location Registration (SS-WTLR) 13 7.3.20 Interaction with Wireless Terminal Incoming Call (ANF-WTMI) 13 7.3.21 Interaction with Wireless Terminal Outgoing Call (ANF-WTMO) 13 7
20、.3.22 Interaction with Wireless Terminal Authentication of a WTM user (SS-WTAT) 13 7.3.23 Interaction with Wireless Terminal Authentication of a PISN (SS-WTAN) 13 7.3.24 Message Waiting Indication (SS-MWI) 13 7.3.25 Common Information (ANF-CMN) 13 7.3.26 Call Priority Interruption (SS-CPI) 13 7.4 In
21、terworking considerations 13 7.5 Overall SDL 13 8 SS-CPI stage 2 specification 15ISO/IEC 15991:2003(E) ISO/IEC 2003 All rights reserved v 8.1 Functional model 15 8.1.1 Functional model description 15 8.1.2 Description of Functional Entities 15 8.1.3 Relationship of functional model to basic call fun
22、ctional model 16 8.2 Information flows 16 8.2.1 Definition of information flows 16 8.2.2 Relationship of information flows to basic call information flows 18 8.2.3 Information flow sequences 18 8.3 Functional Entity actions 21 8.3.1 Actions of FE1 21 8.3.2 Actions of FE2 21 8.3.3 Actions of FE3 22 8
23、.3.4 Actions of FE4 22 8.3.5 Actions of FE5 22 8.4 Functional entity behaviour 22 8.4.1 Behaviour of FE1 22 8.4.2 Behaviour of FE2 24 8.4.3 Behaviour of FE3 25 8.4.4 Behaviour of FE4 27 8.4.5 Behaviour of FE5 28 8.5 Allocation of Functional Entities to physical equipment 29 8.6 Interworking consider
24、ations 29 9 SS-CPIP stage 2 specification 29 9.1 Functional model 29 9.1.1 Functional model description 29 9.1.2 Description of Functional Entities 30 9.1.3 Relationship of functional model to basic call functional model 30 9.2 Information flows 31 9.2.1 Definition of information flows 31 9.2.2 Rela
25、tionship of information flows to basic call information flows 32 9.2.3 Information flow sequences 32 9.3 Functional Entity actions 35 9.3.1 Actions of FE1 35 9.3.2 Actions of FE2 35 9.3.3 Actions of FE3 35 9.3.4 Actions of FE4 36 9.3.5 Actions of FE5 36 9.4 Functional entity behaviour 36 9.4.1 Behav
26、iour of FE1 37 9.4.2 Behaviour of FE2 38 9.4.3 Behaviour of FE3 39 9.4.4 Behaviour of FE4 40 9.4.5 Behaviour of FE5 41 9.5 Allocation of Functional Entities to physical equipment 42 9.6 Interworking considerations 42ISO/IEC 15991:2003(E) vi ISO/IEC 2003 All rights reserved Foreword ISO (the Internat
27、ional 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
28、 by 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. In the field
29、 of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft I
30、nternational Standards adopted by the joint technical committee are circulated to national 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 doc
31、ument 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 15991 was prepared by ECMA (as ECMA-263) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information techno
32、logy, in parallel with its approval by national bodies of ISO and IEC. This second edition cancels and replaces the first edition (ISO/IEC 15991:1998), which has been technically revised. ISO/IEC 15991:2003(E) ISO/IEC 2003 All rights reserved vii Introduction This International Standard is one of a
33、series of Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This Interna
34、tional Standard specifies the Call Priority Interruption (CPI) and Call Priority Interruption Protection (CPIP) supplementary services. 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
35、 of ISO/IEC JTC 1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus. ISO/IEC 2003 All rights reserved 1 1S c o p e This International Standard specifies the Supplementary Services Call Priority Interruption (SS-CPI) and Cal
36、l Priority Interruption Protection (SS-CPIP), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. NOTE 1 - This edition of this International Standard does not apply to the circuit-mode Multiple Rate
37、Bearer Service. SS-CPI is a supplementary service that allows a call request for a priority call to proceed successfully in the case that there is no user information channel available. This is accomplished by force releasing an established call of lower priority. SS-CPIP is a supplementary service
38、that allows for the protection of calls against interruption from other, priority, calls. SS-CPI and SS-CPIP are described separately because SS-CPI is a service used by a calling user, and SS-CPIP is a service used by either a calling user or a called user. Supplementary service specifications are
39、produced in three stages, according to the method described in ETS 300 387. This International Standard contains the stage 1 and stage 2 specifications of SS-CPI. The stage 1 specification (clause 6) specifies the general feature principles and capabilities. The stage 2 specification (clause 7) iden
40、tifies the Functional Entities involved in the supplementary service and the information flows between them. 2 Conformance In order to conform to this International Standard, a stage 3 standard shall specify signalling protocols and equipment behaviour that are capable of being used in a PISN which
41、supports the supplementary service specified in this International Standard. This means that, to claim conformance, a stage 3 standard is required to be adequate for the support of those aspects of clause 6 (stage 1) and clause 7 (stage 2) which are relevant to the interface or equipment to which th
42、e stage 3 standard applies. 3 Normative references ISO/IEC 11574:2000, 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 fl
43、ows 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 13863:1998, Information technology - Telecommunications and information exchange be
44、tween systems - Private Integrated Services Network - Specification, functional model and information flows - Path replacement additional network feature ISO/IEC 13865:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - S
45、pecification, functional model and information flows - Call Transfer supplementary service ISO/IEC 13866:1995, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call com
46、pletion supplementary services ISO/IEC 13872:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Diversion supplementary services INTERNATIONAL STANDARD ISO/IEC
47、 15991:2003(E)Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Call Priority Interruption and Call Priority Interruption Protection supplementary services The following referen
48、ced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 15991:2003(E) 2 ISO/IEC 2003 All rights reserved ISO/IEC 15053
49、:2003, Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Interception additional network feature ETS 300 387:1994, Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs ITU-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means
