1、GSM GSM 02.68 January 1996 Version 5.0.0 Source: ETSI TC-SMG Reference: TS/SMG-O30268Q ICs: 33.060.50 Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM) GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS Digital cellular telecommunications system (Phase 2+); Vo
2、ice Group Call Service (VGCS) - Stage 1 (GSM 02.68) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat
3、- Internet: secretariatetsi.fr Tel.: +33 92 94 42 O0 - Fax: +33 93 65 47 16 Copyright Notiication: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. 6 European Telecommunications Standards Institute
4、1996. All rights reserved. ETSI GSM*02-68 96 = 3400855 0078594 886 = Page 2 GSM 02.68 Version 5.0.0: January 1996 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accura
5、cy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. ETSI GSM*02-68 96 m 3400855 0078595 712 m Page 3 GSM 02.68 Version 5.0.0: January 1996 Contents Foreword . 5 Scope 7 References 7 Definitions and abbreviations 7 3.1 Definitions 7 3.2 Abbreviations
6、 . 8 Description 9 Normal operation with successful outcome . 12 5.1 Provision 12 5.2 Withdrawal . 12 5.3 Network related service configuration 12 5.4 Normal operation for group call establishment 12 5.5 Charging requirements 13 Exceptional procedures or unsuccessful outcome 13 Interaction with othe
7、r GSM services 13 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.1 1 7.12 7.13 7.14 7.1 5 7.16 7.17 7.18 7.1 9 7.20 7.21 7.22 Calling Line Identification Presentation (CLIP) 13 Calling Line Identification Restriction (CLIR) . 13 Connected Line Identification Presentation (COLP) 13 Connected Line Identif
8、ication Restriction (COLR) . 13 Call Forwarding on mobile subscriber Busy (CFB) 14 Call Forwarding on No Reply (CFNRy) 14 Call Forwarding Unconditional (CFU) 13 Call Forwarding on mobile subscriber Not Reachable (CFNRc) . 14 Call Waiting (CW) 14 Call Hold 14 Muiti-party Service (MPTY) 14 Closed User
9、 Group (CUG) . 14 Advice of Charge (AOC) . 14 Barring of All Outgoing Calls (BAOC) 14 Barring of Outgoing International Calls (BOIC) 14 Barring of Outgoing International Calls except those to the Home PLMN country (BOIC-exHC) . 15 Barring of All Incoming Calls (BAIC) 15 Barring of Incoming Calls whe
10、n Roaming outside the home PLMN country (BIG-Roam) . 15 Call Transfer (ECT) 15 Completion of Calls to Busy Subscriber (CCBS) . 15 Priority Set-up Service (PSUS) 15 Short Message Service (SMS) . 15 Interworking considerations . 15 History 16 ETSI GSM+02.68 96 3400855 0078596 659 Page 4 GCM 02.68 Vers
11、ion 5.0.0: January 1996 Blank page - ETSI GSM*O2=b8 96 3400855 0078597 595 Page 5 GSM 02.68 Version 5.0.0: January 1996 Foreword This Global System for Mobile communications Technical Specification (GTS) has been produced by the Special Mobile Group (SMG) Technical Committee (TC) of the European Tel
12、ecommunications Standards Institute (ETSI). This GTS defines the stage one description of the Voice Group Call Service (VGCS) within the digital cellular telecommunications system (Phase 2Phase 2+). GTS are produced by TC-SMG to enable the GSM Phase 2+ specifications to become publicly available, pr
13、ior to submission for the formal ETSI standards approval procedure to become European Telecommunications Standards (ETS). This ensures the earliest possible access to GSM Phase 2+ specifications for all Manufacturers, Network operators and implementors of the Global System for Mobile communications.
14、 The contents of this GTS are subject to continuing work within TC-SMG and may change following formal TC-SMG approval. Should TC-SMG modify the contents of this GTS it will then be republished by ETSI with an identifying change of release date and an increase in version number as follows: Version 5
15、.x.y where: y the third digit is incremented when editorial only changes have been incorporated in the specification; x the second digit is incremented for all other types of changes, .e. technical enhancements, corrections, updates, etc. Reference is made within this GTS to GSM-TSs (note). NOTE: TC
16、-SMG has produced documents which give the technical specifications for the implementation of the digital cellular telecommunications system. Historically, these documents have been identified as GSM Technical Specifications (GSM-TSs). These TSs may have subsequently become I-ETSs (Phase l), or ETSd
17、ETSI Technical Reports (ETRs) (Phase 2). TC-SMG has also produced ETSI GSM TSs which give the technical specifications for the implementation of Phase 2+ enhancements of the digital cellular telecommunications system. These version 5.x.x GSM Technical Specifications may be referred to as GTSs. ETSI
18、GSM*02-68 96 3400855 0078598 421 Page 6 GSM 02.68 Version 5.0.0: January 1996 Blank page - - ETSI GSN*02.68 76 3Y00855 0078599 368 = Page 7 GSM 02.68 Version 5.0.0: January 1996 1 Scope This GSM Technical Specification (GTS) specifies the stage one description of the Voice Group Call Service (VGCS)
19、which allows speech conversation of a predefined group of service subscribers in half duplex mode on the radio link taking into account multiple mobile service subscribers involved in the VGCS call per cell. The VGCS is applicable to all mobile stations in a certain network and area which have the t
20、echnical capability and the corresponding subscription, respectively, to participate in a VGCS call. NOTE: It is not considered as requirement that normal GSM phase 2 mobile stations will be able to be used for this service. The service is described from the service subscribers and users point of vi
21、ew; in particular: - the procedure for normal operation with successful outcome; - the action to be taken in exceptional circumstances; - the interaction with other GSM services and features. This specification does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to t
22、he appropriate Global System for Mobile Communications (GSM) specifications. This specification defines a teleservice of the digital cellular telecommunications system GSM. Any interaction with other services and/or networks not dealt with in clauses 8 or 9 are outside the scope of this specificatio
23、n. 2 References This specification incorporates by dated and undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
24、 of these publications apply to this specification only when incorporated in it by the amendment or revision. For undated references, the latest edition of the publication referred to applies. PI GSM O1 .O4 (ETR 100): “European digital cellular telecommunications system (Phase 2); Abbreviations and
25、acronyms“ GSM 02.40 (ETS 300 512): “European digital cellular telecommunications system (Phase 2); Procedures for call progress indications“. GSM 02.67: “Digital cellular telecommunications system (Phase 2+); enhanced Multi-Level Precedence and Pre-emption (eMLPP) - Stage 1 “. 3 Definitions and abbr
26、eviations 3.1 Definitions network operator: Entity which provides the network operating elements and resources for the execution of the VGCS. service provider: Entity which offers the VGCS for subscription. The network operator may be the service provider. group call: An instance of the VGCS initiat
27、ed by a subscriber. This term is used synonymously with the term “VGCS call“. service subscriber: Mobile subscriber which subscribes to the VGCS. ETSI GSM+02.68 Yb 3400855 0078b00 90T Page 8 GSM 02.68 Version 5.0.0: January 1996 Group Identification (GROUP ID): A numerical classification. There can
28、be up to tbdll different group IDS in one PLMN. Service subscriber shall be provided with one or up to tbd group IDS. dispatcher: Particular fixed line or mobile users are identified within the network as dispatchers. Dispatchers shall receive all group calls to a certain group ID in a service area
29、(this shall be done automatically by the network). In addition they can initiate group calls to a group ID in a service area. Dispatchers shall be connected to a group call by means of standard links via radio or via an ISDN. They shall be called by their ISDN or MSISDN number, respectively. When di
30、spatchers initiate group calls, they shall call a particular MSISDN number which is related to a group ID and service area. Dispatchers using the GSM network can be located outside of this service area. The identities of the dispatchers are exclusively predefined in the network by the service provid
31、er. There will be none or up to five dispatchers involved in a particular group call. destination subscriber: Service subscriber or dispatcher to which the VGCS call is directed. calling subscriber: Service subscriber or dispatcher which originates the VGCS call. service area: Predefined area compos
32、ed of one or a cluster of cells to which a particular VGCS call is distributed. Up to tbdll different service areas can be defined in one PLMN. The composition of a service area is predefined in the network by the service provider. Changing of cell allocation in the network due to operational reason
33、s will need an adaptation of the service area definition. The service area may include more then one MSC area and cells of more than one PLMN. Remark: this requirement is under study and may affect performance and implementation issues. group call member: Any service subscriber or dispatcher partici
34、pating in an on going group call. NOTE: The maximum number of group IDS which can be defined in one PLMN depends on the maximum number of service areas defined in this PLMN. The maximum number of group IDS and service areas shall be 108-1, tbc. 3.2 Abbreviations Abbreviations used in this specificat
35、ion are also listed in GSM O1 .O4 l. For the purposes of this specification, the following abbreviations apply: VGCS: VBS: PSUS: Voice Group Call Service Voice Broadcast Service Priority Set-up Service ETSI GSMJr02.68 96 m 3400855 0078603 846 m Page 9 GSM 02.68 Version 5.0.0: January 1996 4 Descript
36、ion The VGCS is defined in the following. Figure 1 gives an explanation of the logical concept of the VGCS. The VGCS enables a calling subscriber to establish a group speech call to destination subscribers belonging to a predefined service area and group ID. Remark: the service may be provided by us
37、e of half duplex transmission mode. Applications for group call services typically involve multiple group members in a small service area, for which the VGCS should provide spectrum efficient solutions. The calling subscriber as well as the destination subscribers may be any service subscriber which
38、 has subscribed to the related group ID or any dispatcher who is entitled to it by his identity which shall be registered in the network. Destination subscribers are all service subscribers or a group of service subscribers identified by the called group ID which have their present location in the s
39、ervice area, and preregistered dispatchers. Destination service subscribers shall be notified with the group ID, not by paging the subscriber individually. Dispatchers shall be called individually with their identity. Service subscribers may become late destination subscribers when entering the serv
40、ice area within 500ms after reception of the first notification message related to the VGCS call. Service subscribers which leave the corresponding service area during an on going VGCS call of which they are member cease to be destination subscribers. The group call shall be established in a service
41、 area which is comprised of one or a cluster of cells. Service areas shall be predefined in the network by the service provider, coordinated by the network operator. In case of a service subscriber initiating a VGCS, the service area is uniquely identified by the actual cell in which the service sub
42、scriber resides at the moment of VGCS call initialization and by the group ID they issue. A dispatcher initiating a VGCS call will be connected to a related predefined sewice area. The entitlement of the dispatcher is checked by the network element responsible for the group call management by verifi
43、cation of the calling identity. Since a dispatcher may be registered to more than one service area and group ID an indication of the wanted service area and group ID has to be given in form of a dedicated address called by the dispatcher. The service shall permit only one talking service subscriber
44、at any moment; additionally up to five dispatcher can be talking simultaneously at one time. Dispatchers should hear all combinations of voices other than their own. Listening service subscribers shall hear the combination of all voices. The talking service subscriber shall gain some audible indicat
45、ion if any dispatchers are talking simultaneously. Dispatchers shall be able to talk at any moment without any need to signal the wish to talk. Service subscribers who wish to talk shall indicate this. They shall only be able to become talking subscribers if there is no other talking service subscri
46、ber. The right to be a talking service subscriber is allocated on a first come first served basis without queuing. Once a service subscriber has become a talking subscriber they shall eventually indicate their wish to become a listening subscriber, or the network may detect that they are no longer a
47、 talking subscriber due to timeout or other mechanisms. SMS, CW and procedures for supplementary service actions are not possible for a talking service subscriber. Page 10 GSM 02.68 Version 5.0.0: January 1996 The calling subscriber shall be informed by the network with a suitable indication about t
48、he successful establishment of the group call so that he can start to speak. NOTE 1: A successful establishment means that all group call downlink channels are allocated, whether somebody is listening or not, and the related dispatchers are alerted. For an established group call the uplink assignmen
49、t to a service subscriber who wishes to talk shall be performed in c300ms after a request to talk is made. The service subscriber wishing to talk shall be given an audible indication that he can speak. As a network option the mobile station of the talking service subscriber can be requested to send its IMSI to the network in order so that the talkers IMSI be stored in the event records. Authentication of calling subscribers at VGCS invocation is optional. Authentication of the talking service subscriber is optional. Confidentiality on the radio path is o
