1、BRITISH STANDARD BS ISO/IEC 13242:1997 Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Route Restriction Class additional network feature ICS 33.040.40; 35.110BSISO/IEC 13242:
2、1997 This British Standard, having been prepared under the directionof the DISC Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997 BSI 04-1999 ISBN 0 580 28852 8 National foreword This British Standard reproduces verbatim ISO/IEC13242:1997 and i
3、mplements it as the UK national standard. The UK participation in its preparation was entrusted to Technical CommitteeIST/6, Data communications, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the in
4、terpretation, or proposals for change, and keep the UKinterests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January1997, all IEC publications
5、 have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement i
6、nternational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to
7、include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, p
8、age i and ii, theISO/IECtitle page, pagesii toiv, pages1 to10 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Com
9、mentsBS ISO/IEC13242:1997 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword iv Text of ISO/IEC 13242 1ii blankBSISO/IEC 13242:1997 ii BSI 04-1999 Contents Page Foreword iv Introduction 1 1 Scope 1 2 Conformance 1 3 Normative references 1 4 Definitions 1 4.1 External definitio
10、ns 1 4.2 Additional network feature 2 4.3 Call, Basic Call 2 4.4 Route Access Class (RAC) 2 4.5 Facility Restriction Class (FRC) 2 4.6 Facility 2 5 List of acronyms 2 6 ANF-RRC Stage 1 specification 2 6.1 Description 2 6.1.1 General description 2 6.1.2 Qualifications on applicability to telecommunic
11、ation services 2 6.2 Procedure 2 6.2.1 Provision/Withdrawal 2 6.2.2 Normal procedures 3 6.2.2.1 Activation/Deactivation/Registration/Interrogation 3 6.2.2.2 Invocation and operation 3 6.2.3 Exceptional procedures 3 6.2.3.1 Activation/Deactivation/Registration/Interrogation 3 6.2.3.2 Invocation and o
12、peration 3 6.3 Interaction with other Supplementary Services and ANFs 3 6.3.1 Calling Line Identification Presentation (SS-CLIP) 3 6.3.2 Connected Line Identification Presentation (SS-COLP) 3 6.3.3 Calling/connected Line Identification Restriction (SS-CLIR) 3 6.3.4 Calling Name Identification Presen
13、tation (SS-CNIP) 3 6.3.5 Connected Name Identification Presentation (SS-CONP) 3 6.3.6 Calling/connected Name Identification Restriction (SS-CNIR) 3 6.3.7 Completion of Calls to Busy Subscriber (SS-CCBS) 3 6.3.8 Completion of Calls on No Reply (SS-CCNR) 3 6.3.9 Call Transfer (SS-CT) 3 6.3.10 Call For
14、warding Unconditional (SS-CFU) 3 6.3.11 Call Forwarding Busy (SS-CFB) 3 6.3.12 Call Forwarding No Reply (SS-CFNR) 3 6.3.13 Call Deflection (SS-CD) 3 6.3.14 Path Replacement (ANF-PR) 3 6.3.15 Call Offer (SS-CO) 3 6.3.16 Call Intrusion (SS-CI) 3 6.3.17 Do Not Disturb (SS-DND) 3 6.3.18 Do Not Disturb O
15、verride (SS-DNDO) 3 6.4 Interworking considerations 3 6.5 Overall SDL 4 7 ANF-RRC Stage 2 specification 4 7.1 Functional model 4 7.1.1 Functional model description 4 7.1.2 Description of functional entities 5BSISO/IEC13242:1997 BSI 04-1999 iii Page 7.1.2.1 RRC initiate, FE1 5 7.1.2.2 RRC execute, FE
16、2 5 7.1.3 Relationship of functional model to basic call functional model 5 7.2 Information flows 5 7.2.1 Definition of information flows 5 7.2.1.1 ra-RRC (Route Restriction Class) 5 7.2.2 Relationship of information flows to basic call information flows 5 7.2.3 Examples of information flow sequence
17、s 6 7.2.3.1 Normal operation of ANF-RRC 6 7.2.3.2 Unavailable appropriate outgoing facility 6 7.3 Functional entity actions 7 7.3.1 Functional entity actions of FE1 7 7.3.2 Functional entity actions of FE2 7 7.4 Functional entity behaviour 7 7.4.1 Behaviour of FE1 7 7.4.2 Behaviour of FE2 7 7.5 Allo
18、cation of functional entities to physical equipment 7 7.6 Interworking considerations 7 Annex A (informative) Examples of the application of ANF-RRC 10 Figure 1 ANF-RRC, Overall SDL 4 Figure 2 Functional model for ANF-RRC 5 Figure 3 Example relationship between models for ANF-RRC and basic call 5 Fi
19、gure 4 Information flow sequence normal operation of ANF-RRC 6 Figure 5 Information flow sequence unavailable appropriate outgoing facility 6 Figure 6 ANF-RRC, SDL for functional entity FE1 8 Figure 7 ANF-RRC, SDL for functional entity FE2 9 Table 1 Content of ra-RRC 5 Table 4 Scenarios for the Allo
20、cation of FEs to Physical Equipment 7 Table A.1 Users and the associated RACs 10 Table A.2 Example of Hierarchical FRCs 10 Table A.3 Example of Non-Hierarchical FRCs 10 Descriptors: Data processing, information interchange, telecommunications, network interconnection, telecommunication network, ISDN
21、, private network, specifications, models.BSISO/IEC13242:1997 iv BSI 04-1999 Foreword ISO (the International Organization for Standardization) and IEC (theInternational Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or
22、IECparticipate 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 in fields of mutual interest. Other international organizations, gov
23、ernmental 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/IECJTC1. Draft International Standards adopted by the joint technical committee are circulated to national bo
24、dies for voting. Publication as an International Standard requires approval by at least75% of the national bodies casting a vote. International Standard ISO/IEC13242 was prepared by Joint Technical Committee ISO/IECJTC1, Information technology, Subcommittee SC6, Telecommunications and information ex
25、change between systems. Annex A of this International Standard is for information only.BSISO/IEC 13242:1997 BSI 04-1999 1 Introduction This International Standard is one of a series of Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). Th
26、e series uses ISDN concepts as developed by ITU-T and conforms to the framework of Standards for Open Systems Interconnection as defined by ISO/IEC. This particular International Standard specifics the Route Restriction Class additional network feature. 1 Scope This International Standard specifies
27、the Route Restriction Class additional network feature (ANF-RRC), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC11574. ANF-RRC permits a Route Access Class (RAC) to be associated with a call to indicate
28、its entitlement to use certain facilities during routeing. Additional network feature specifications are produced in three stages, according to the method described in CCITT RecommendationI.130 for supplementary services. This International Standard contains the stage1 and stage2 specifications of A
29、NF-RRC. The stage1 specification (clause6) specifies the feature as seen by an entity which generates, receives, and acts on the RAC. The stage2 specification (clause7) identifies the functional entities involved in the feature and the information flows between them. 2 Conformance In order to confor
30、m 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 supports the feature specified in this International Standard. This means that, to claim conformance, a Stage3 Standard is required to be ade
31、quate for the support of those aspects of clause6 and clause7 which are relevant to the interface or equipment to which the Stage3 Standard applies. 3 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International St
32、andard. 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 indicated below. Members of
33、 IEC and ISO maintain registers of currently valid International Standards. ISO/IEC 11571:1994, Information technology Telecommunications and information exchange between systems Numbering and sub-addressing in private integrated services networks. ISO/IEC 11574:1994, Information technology Telecomm
34、unications and information exchange between systems Private Integrated Services Network Circuit-mode64kbit/s bearer services Service description, functional capabilities and information flows. ISO/IEC 11579-1:1994, Information technology Telecommunications and information exchange between systems Pr
35、ivate Integrated Services Network Part 1: Reference configuration for PISN exchanges (PINX). CCITT Rec. I.112 (1988), Vocabulary of Terms for ISDNs. CCITT Rec. I.130 (1988), Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN. CCITT
36、Rec. I.210 (1988), Principles of telecommunication services supported by an ISDN and the means to describe them. CCITT Rec. Z.100 (1988), Specification and Description Language. 4 Definitions For the purposes of this International Standard, the following definitions apply. 4.1 External Definitions T
37、his International Standard uses the following terms defined in other documents. Basic service (CCITT Rec. I.210) Private Integrated Services Network (PISN) (ISO/IEC 11579-1) Private Integrated Services Network Exchange (PINX) (ISO/IEC 11579-1) Service (CCITT Rec. I.112)BSISO/IEC 13242:1997 2 BSI 04-
38、1999 This International Standard refers to the following basic call functional entity (FEs) defined in ISO/IEC11574. This International Standard refers to the following basic call inter-FE relationships defined in ISO/IEC11574. This International Standard refers to the following basic call informati
39、on flows defined in ISO/IEC11574. 4.2 Additional Network Feature a capability, over and above that of a basic service, provided by a PISN, but not directly to a PISN user 4.3 Call, Basic Call an instance of the use of a basic service 4.4 Route Access Class (RAC) an integer representation of the enti
40、tlement of a call to use certain facilities during routeing 4.5 Facility Restriction Class (FRC) restrictions on access to a particular facility, expressed in terms of the RAC values that are entitled to use the facility and those that are not 4.6 Facility a physical or logical entity that a call ca
41、n use in order to achieve routeing to its destination NOTEExamples of facilities include international public network connections, long distance (national) public network connections, particular public networks, and particular inter-PINX links. 5 List of acronyms 6 ANF-RRC stage 1 specification 6.1
42、Description 6.1.1 General description ANF-RRC permits an RAC to be associated with a call to indicate its entitlement to use certain facilities during routeing. 6.1.2 Qualifications on applicability to telecommunication services This additional network feature is applicable to all basic services def
43、ined in ISO/IEC11574. 6.2 Procedure 6.2.1 Provision/Withdrawal For the provision of ANF-RRC within a PISN, each potential source of calls (e.g. each user) shall be assigned an RAC. In addition, each facility whose use is to be controlled by ANF-RRC shall be assigned an FRC. An FRC shall consist of e
44、ither: one or more RAC values that are entitled to use the facility; or one or more RAC values that are not entitled to use the facility. Some PISNs may treat RAC values as levels, whereby each RAC value other than the lowest numbered RAC value is entitled to use all facilities that the value below
45、can use, plus some specific additional facilities. Any PINX implementation shall be capable of providing ANF-RRC in this way and some PINX implementations may be capable of providing ANF-RRC only in this way (seeAnnex A). Signalling (CCITT Rec. I.112) Supplementary Service (CCITT Rec. I.210) User (I
46、SO/IEC 11574) Call Control (CC). r2 SETUP REJECT request/indication SETUP request/indication. ANF Additional Network Feature ANF-RRC ANF Route Restriction Class CC Call Control (functional entity) FE Functional Entity FRC Facility Restriction Class ISDN Integrated Services Digital Network PINX Priva
47、te Integrated services Network Exchange PISN Private Integrated Services Network RAC Route Access Class SDL Specification and Description LanguageBSISO/IEC 13242:1997 BSI 04-1999 3 6.2.2 Normal procedures 6.2.2.1 Activation/Deactivation/Registration/ Interrogation ANF-RRC shall be permanently activa
48、ted. No information needs to be registered within the PISN for this ANF, and therefore interrogation is not applicable. 6.2.2.2 Invocation and operation An RAC shall be associated with each call in accordance with the calls source. A call shall not use a facility that is controlled by ANF-RRC if, ac
49、cording to that facilitys FRC, the calls RAC value is not entitled to use that facility. NOTEA call that cannot be progressed because its RAC value does not allow it to access facilities needed for routeing can be released in accordance with ISO/IEC11574. Other possible actions in this situation are outside the scope of this International Standard. 6.2.3 Exceptional procedures 6.2.3.1 Activation/Deactivation/Registration/ Interrogation Not applicable. 6.2.3.2 Invocation and operation Not app
