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    ISO IEC 14841-1996 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification fu.pdf

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    ISO IEC 14841-1996 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification fu.pdf

    1、INTERNATIONAL STANDARD ISO/IEC 14841 First edition 1996-09-I 5 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call offer supplementary service Technologies de /inform

    2、ation - TItkommunications et Bchange dinformation entre syst&mes - R&eau priv& 9 int&gration de services - Spkification, mod&/e fonctionnel et debit dinformation - Service supplkmentaire doffre dappel Reference number ISO/IEC 14841 :I 996(E) ISO/IEC 14841:1996(E) Contents Foreword Introduction 1 Sco

    3、pe 2 Conformance 3 Normative references 4 Definitions 4.1 External definitions 4.2 Other definitions 5 List of acronyms 6 SS-CO stage 1 specification 6.1 Description 6.1.1 General description 6.1.2 Qualifications on applicability to telecommunication services 6.2 Procedures 6.2.1 Provision/withdrawa

    4、l 6.2.2 Normal procedures 6.2.3 Exceptional procedures 6.3 Interactions with other supplementary services and ANFs 6.3.1 Calling Line Identification Presentation (SS-CLIP) 6.3.2 Connected Line Identification Presentation (SS-COLP) 6.3.3 Calling/Connected Line Identification Restriction (SS-CLIR) 6.3

    5、.4 Calling Name Identification Presentation (SS-CNIP) 6.3.5 Connected Name Identification Presentation (SS-CONP) 6.3.6 Calling/Connected Name Identification Restriction (SS-CNIR) 6.3.7 Completion of Calls to Busy Subscriber (SS-CCBS) 6.3.8 Completion of Calls on No Reply (SS-CCNR) 6.3.9 Call Transfe

    6、r (SS-CT) 6.3.10 Call Forwarding Unconditional (SS-CFU) 6.3.11 Call Forwarding Busy (SS-CFB) 6.3.12 Call Forwarding No Reply (SS-CFNR) 6.3.13 Call Deflection (SS-CD) 6.3.14 Path Replacement (ANF-PR) 6.3.15 Do Not Disturb (SS-DND) 6.3.16 Do Not Disturb Override (SS-DNDO) 6.3.17 Call Intrusion (SS-CI)

    7、 6.4 Interworking considerations iv V 1 1 1 2 2 3 3 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 6 ISO/I EC 1996 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 photoc

    8、opying and microfilm, without per- mission in writing from the publisher. ISO/IEC Copyright Office l Case Postale 56 * CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii OISO/IEC ISO/IEC 14841: 1996 (E) 6.5 Overall SDL 7 SS-CO stage 2 specification 7.1 Functional model 7.1.1 Functional model

    9、description 7.1.2 Description of functional entities 7.1.3 Relationship of functional model to basic call functional model 7.2 Information flows 7.2.1 Definition of information flows 7.2.2 Relationship of information flows to basic call information flows 7.2.3 Examples of information flow sequences

    10、7.3 Functional entity actions 7.3.1 Functional entity actions of FE1 7.3.2 Functional entity actions of FE2 7.4 Functional entity behaviour 7.4.1 Behaviour of FE1 7.4.2 Behaviour of FE2 7.5 Allocation of functional entities to physical equipment 7.6 Interworking considerations 7 12 12 12 13 13 14 14

    11、 15 16 26 26 26 26 26 33 36 36 . . . 111 ISO/IEC 14841:1996 (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 IEC

    12、 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, gover

    13、nmental 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 bo

    14、dies for voting. Publication as an International Standard requires approval by at least 75% of the national bodies casting a vote. International Standard ISO/IEC 14841 was prepared by ECMA (as Standard ECMA- 191) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee I

    15、SO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of IS0 and IEC. OISO/IEC ISO/IEC 14841:1996 (E) Introduction This International Standard is one of a series of International Standards defining services and signalling protocols applicable to Private Integrated Se

    16、rvices Networks (PISNs). The series uses ISDN concepts as developed by lTU-T and conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This particular International Standard specifies the Call Offer supplementary service. INTERNATIONAL STANDARD

    17、ISOmx ISO/IEC 14841:1996 (E) Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call offer supplementary service 1 Scope This International Standard specifies the Call Of

    18、fer supplementary service (SS-CO), which is applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. Call Offer (SS-CO) is a supplementary service which, on request from the calling user (or on that users behalf), e

    19、nables a call to be offered to a busy called user and to wait for that called user to accept this call. Supplementary service specifications are produced in three stages, according to the method described in CCITT Recommendation 1.130. This International Standard contains the stage 1 and stage 2 spe

    20、cifications of SS-CO. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) identifies the functional entities involved in the supplementary service and the information flows between them. Note 1 - For this Internatio

    21、nal Standard, stage 2 does not consider the split of functionality between a functional terminal and the local PINX. Terminal functions and local PINX functions are included in the same functional entity. 2 Conformance In order to conform to this International Standard, a stage 3 International Stand

    22、ard shall specify signalling protocols and equipment behaviour that are capable of being used in a PISN which supports the supplementary service specified in this International Standard. This means that, to claim conformance, a Stage 3 International Standard is required to be adequate for the suppor

    23、t of those aspects of clause 6 (stage 1) and clause 7 (stage 2) which are relevant to the interface or equipment to which the Stage 3 International Standard applies. 3 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this

    24、 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 indicated

    25、below. Members of IEC and IS0 maintain registers of currently valid International Standards . ISO/IEC 11574: 1994, ISO/IEC 11579- 1: 1994, ISO/IEC 13864:1995, ISO/IEC 13865: 1995, ISO/IEC 13866: 1995, ISO/IEC 13872: 1995, Information technology - Telecommunications and information exchange between s

    26、ystems - Private Integrated Services Network - Circuit-mode 64 kbitis bearer services - Service description, functional capabilities and information flows. Information technology - Telecommunications and information exchange between systems - Private integrated services network - Part 1: Reference c

    27、onfiguration for PISN Exchanges (PINX). Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Name identification supplementary services. Information technology - Telecommun

    28、ications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call transfer supplementary service. Information technology - Telecommunications and information exchange between systems - Private Integrated Services Ne

    29、twork - Specification, functional model and information flows - Call completion supplementary services. Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call diversion

    30、supplementary services. ISO/IEC 14841:1996 (E) OISO/IEC ISO/IEC 14136:1995, ISO/IEC 14842: 1996, CCITT Rec. 1.112: 1988, CCITT Rec. 1.210: 1988, CCIIT Rec. 1.221: 1988, CCITT Rec. Z. 100: 1988, 4 Definitions Information technology - Telecommunications and information exchange between systems - Priva

    31、te Integrated Services Network - Specification, functional model and information flows - Identification supplementary services. Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information

    32、 flows - Do not disturb and do not disturb override supplementary services. Vocabulary of terms for ISDNs (Blue Book). Principles of telecommunication services supported by an ISDN and the means to describe them (Blue Book). Common specific characteristics of services, Definition of par. 3 “busy” in

    33、 an ISDN (Blue Book). Specification and Description Language (Blue Book). For the purposes of this International Standard, the following definitions apply. 4.1 External definitions This International Standard uses the following terms defined in other documents: - Basic service (CCITT Rec. 1.210) - C

    34、onnection (CCITT Rec. I. 1 12) - Network Determined User Busy (CCITT Rec. 1.221) - Private Integrated Services Network (PISN) (ISO/IEC 11579-l) - Private Integrated Services Network Exchange (PINX) (ISO/IEC 11579-l) - Service (CCITT Rec. I. 112) - Signalling (CCIIT Rec. I. 112) - Supplementary Servi

    35、ce (CCITT Rec. 1.210) - User (ISO/IEC 11574) - User Determined User Busy (CCITT Rec. 1.221) This International Standard refers to the following basic call functional entity (FEs) defined in ISO/IEC 11574: - Call Control (CC) - Call Control Agent (CCA) This International Standard refers to the follow

    36、ing basic call inter-FE relationships defined in ISO/IEC 11574: - rl - r2 - r3 This International Standard refers to the following basic call information flows defined in ISO/IEC 1 1574: - Release request/indication - Release response/confirmation - Report request/indication - Setup request/indicati

    37、on - Setup response/confirmation. 01s0/IEc ISO/IEC 14841:1996 (E) 4.2 Other definitions additional network feature : A capability, over and above that of a basic service, provided by a PISN, but not directly to a PISN user. automatic call offer invocation timer : A timer governing the time after whi

    38、ch SS-CO is automatically invoked after the calling user has been informed that a call has failed because of busy at the destination. The duration of the timer is an implementation option. busy : A property of a user for whom either a Network Determined User Busy or User Determined User Busy conditi

    39、on exists. call, basic call : An instance of the use of a basic service. consultation timer : A timer governing the time in which the calling user is allowed to request invocation of SS-CO after being informed that a call has failed because of busy at the destination. The duration of the timer is an

    40、 implementation option. offered call : A call that is in a waiting condition as a result of invocation of SS-CO against a busy called user. path retention : The retaining of the network connection between the Originating CC and the Destination CC so that a supplementary service (such as SS-CO) can b

    41、e invoked without establishing a new connection. 5 List of acronyms cc CCA CCBS CCNR CD CLIP CLIR CNIP CNIR co COLP CONP CT DND DNDO FE ISDN PR PINX PISN Additional Network Feature Call Control (functional entity) Call Control Agent (functional entity) Call Completion to Busy Subscriber Call Complet

    42、ion on No Reply Call Deflection Call Forwarding Busy Call Forwarding No Reply Call Forwarding Unconditional Calling Line Identification Presentation Calling/Connected Line Identification Restriction Calling Name Identification Presentation Calling/Connected Name Identification Restriction Call Offer

    43、 Connected Line Identification Presentation Connected Name Identification Presentation Call Transfer Do Not Disturb Do Not Disturb Override Functional Entity Integrated Services Digital Network Path Replacement Private Integrated Services Network Exchange Private Integrated Services Network ISO/IEC

    44、14841:1996 (E) 01s0/IEc SDL ss TE Specification and Description Language Supplementary Service Terminal Equipment 6 SS-CO stage 1 specification 6.1 Description 6.1.1 General description SS-CO is a supplementary service which, on request from the calling user (or on that users behalf), enables a call

    45、 to be offered to a busy called user and to wait for that called user to accept the call, after the necessary resources have become available. The busy called user is given an indication of the offered call. During the time that the call is offered, the called user may ignore the offered call or may

    46、 attempt to make the necessary resources available (e.g. by releasing or placing on hold another call). When and if the necessary resources become available, the call shall be completed as a normal incoming call. 6.1.2 Qualifications on applicability to telecommunication services SS-CO is applicable

    47、 to all basic services defined in lSO/IEC 11574. 6.2 Procedures 6.2.1 Provision/withdrawal SS-CO may be provided or withdrawn after pre-arrangement with the service provider (by means of service profile control), or may be available generally to all users. In a PISN that offers more than one way of

    48、invoking SS-CO (see 6.2.2.2), one or more of these ways shall be selected at provision time. 6.2.2 Normal procedures 6.2.2.1 Activation/deactivation/registration/interrogation Not applicable. 6.2.2.2 Invocation and operation There are four different ways of invoking SS-CO. A PISN shall offer one or

    49、more of these ways. These ways are: 1. Network invocation (immediate): the PISN shall automatically invoke SS-CO whenever the calling user makes a call to a user that is busy, if required by the service profile of the calling user. 2. Consultation: the calling user, on being informed that a call has failed because of busy at the destination and that SS-CO may be possible, shall be able, within a defined time period (consultation timer) to request invocation of SS-CO. 3. Immediate invocation: the calling user shall be able to request invocation of SS-CO as part of the initial call set


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