1、STD*ETSI GSM 02.73-ENGL 1998 D 3400855 02bbOL2 2bL T GSM GSM 02.93 January 1998 Version 5.5.0 Source: SMG Reference: RTS/SMG-O10293QR4 ICs: 33.020 Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM) Digital cellular telecommunications system (Phase 2+
2、); Completion of Calls to Busy Subscriber (CCBS); Service description, Stage 1 (GSM 02.93 version 5.5.0) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne
3、- FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat etsi.fr Tel.: +33 4 92 94 42 O0 - Fax: 43 4 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all
4、 media. O European Telecommunications Standards Institute 1998. All rights reserved. STD-ETSI GSM 02.93-ENGL 1998 3q00855 02bbO33 LTB Page 2 GSM 02.93 version 5.5.0: January 1998 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or
5、 otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. STD-ETSI GSM 02.73-ENGL 1998 3400855 02bbOLLi 034 H Page 3 GSM 02.93 version 5.5.0: January 1998 Contents Foreword . _ . 5 1 Scope .
6、 7 2 Normative references 7 3 Definitions and abbreviations . 7 3.1 Definitions _. 7 3.2 Abbreviations . _. 9 4 Description 9 Applicability to telecommunications services . 9 4.1 5 Normal procedures with successful outcome . 9 5.1 Provision .-_ 9 . 5.1.1 Subscriber A 9 5.1.2 Subscriber B 9 5.2 Withd
7、rawal . 1 O 5.3 Registration . -.- 10 5.4 Erasure . - . 1 0 5.5 Activation . 1 O 5.6 Deactivation . 10 5.7 Invocation and operation . 1.1 5.8 Interrogation . 11 6 Exceptional procedures or unsuccessful outcome 11 6.1 Registration 11 6.2 Erasure . 11 6.3 Activation . 11 6.4 Deactivation . 12 6.5 Invo
8、cation and operation . 12 Exceptional situation at destination Bs side: . 12 Exceptional situation at subscriber As side: . 14 Exceptional situations in the network 15 6.5.1 6.5.2 6.5.3 7 Interaction with other supplementary services 15 7.1 Calling line identification presentation 15 7.2 Calling lin
9、e identification restriction . 7.3 Connected line identification presentation . 15 7.4 Connected line identification restriction . 15 7.5 Call Forwarding Unconditional (CFU) 15 7.6 Call Forwarding on mobile subscriber Busy (CFB) 16 7.7 Call Forwarding on No Reply (CFNRy) 16 7.8 Call Forwarding on mo
10、bile subscriber Not Reachable (CFNRc) . 16 7.9 7.10 Call hold . 17 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20 Call waiting . _._ . 16 7.11 Multiparty services . 17 Closed user group 17 Advice of charge services . 1.7 Barring of All Outgoing Calls (BAOC) 17 Barring of Outgoing International Calls (
11、BOIC) 17 Barring of Outgoing International Calls except those directed to the Home PLMN Barring of All Incoming Calls (BAIC) 17 Barring of Incoming Calls when roaming outside the home PLMN country (BIC-Roam) 18 Country (BOIC-exHC) 17 Explicit call transfer ._._ 18 Completion of calls to busy subscri
12、ber 18 STD-ETSI GSM 02.93-ENGL 1778 W 3g00855 02bbO15 T70 Page 4 GSM 02.93 version 5.5.0: January 1998 7.21 Customised Applications for Mobile network Enhanced Logic (CAMEL) 18 7.22 Support of Private Numbering Plan (SPNP) . 19 8 Mobility aspects 19 Annex A (informative): Cross Phase compatibility 2
13、0 A.l Activation of a CCBS request . 20 A.2 CCBS Recall 20 A.3 Interrogation 20 A.4 Deactivation 20 Annex B (normative): Roaming to non-supporting networks 21 B.l Roaming into networks or registering in network entities not supporting CCBS 21 Destination B may register in a non-supporting network en
14、tity . 21 B.l.l B.1.2 Subscriber A may register in a non-supporting network or network entity 21 Annex C: Change Request History . 22 History 23 STD-ETSI GSM 02.93-ENGL 1998 3q00855 02bbOLb 907 Page 5 GSM 02.93 version 5.5.0: January 1998 Foreword This Global System for Mobile communications Technic
15、al Specification (GTS) has been produced by the Special Mobile Group (SMG) of the European Telecommunications Standards Institute (ETSI). This GTS specifies the stage 1 description of Completion of Calls to Busy Subscriber (CCBS) from the subscribets and users points of view; in particular: - - - th
16、e procedures for normal operation with successful outcome: the action to be taken in exceptional circumstances; the interaction with other GSM supplementary services. within the digital cellular telecommunications system (Phase UPhase 2+). This GTS is a SMG approved GSM technical specification versi
17、on 5, which contains GSM Phase 2+ enhancements/features. The contents of this GTS are subject to continuing work within SMG and may change following formal SMG approval. Should SMG modify the contents of this GTS, it will then be republished by ETSI with an identifying change of release date and an
18、increase in version number as follows: Version 5.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. STD-ETSI GSM
19、02-93-ENGL 1998 3900855 02bbOL7 BY3 Page 7 GSM 02.93 version 5.5.0: January 1998 1 Scope This Global System for Mobile communications Technical Specification (GTS) specifies the stage 1 description of Completion of Calls to Busy Subscriber (CCBS) from the subscribers and users points of view; in par
20、ticular: - - - the procedures for normal operation with successful outcome; the action to be taken in exceptional circumstances; the interaction with other GSM supplementary services; This specification does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to the appro
21、priate GSM specifications. The charging principles applied to CCBS are outside of the scope of this specifcation. This specification is applicable to the digital cellular telecommunication system Global System for Mobile communications (GSM). Any interactions with other networks not dealt with in th
22、is ETS are outside the scope of this GTS. 2 Normative references This specification incorporates, by dated or 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 referen
23、ces, subsequent amendments to, or revisions of, any of these publications apply to this specification only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 31 41 GSM O1 .O4 (ETR 350): “Digital cellular telecommunicati
24、ons system (Phase 2+); Abbreviations and acronyms“. GSM 02.04 (ETS 300 91 8): “Digital cellular telecommunications system (Phase 2+); General on supplementary services“. GSM 02.30 (ETS 300 907): “Digital cellular telecommunications system (Phase 2+); Man-Machine interface (MMI) of the Mobile Station
25、 (MS)“. GSM 09.02 (ETS 300 974): “Digital cellular telecommunications system (Phase 2+); Mobile Application Part (MAP) specification“. GSM 02.85: “Digital cellular telecommunications system; Closed User Group (CUG) Supplementary Services - Stage 1“. 3 Definitions and abbreviations 3.1 Definitions Fo
26、r the purposes of this specifcation, the following definitions apply: CCBS supplementary service: is a service which enables a calling subscriber A, encountering a NDUB destination 8, to have the call completed when the busy destination B becomes idle, without having to make a new call attempt. CCBS
27、 busy on the A side: is caused by the following condition: - while the CCBS recall timer T4 or the CCBS notification timer T10 is running or until the CCBS call is completed or the CCBS call fails. CCBS busy on the B side: is caused by the following conditions: - while the idle guard timer (T8) is r
28、unning; - while there is CCBS recall pending (.e. while the CCBS recall timer T9 is running). Previous page is blank STD-ETSI GSM 02-93-ENGL 1778 3LI00855 02bbO18 78T Page 8 GSM 02.93 version 5.5.0: January 1998 Subscriber A and Destination B is indicated as idle if there are no active calls, no cal
29、ls on hold and no call waiting for the subscribers. Subscriber A and Destination B is indicated as not reachable if one of the conditions defined in GSM 09.02 apply (e.g. IMSI detach, no paging response, no location information in HLR). CCBS recall: an indication informing subscriber A that destinat
30、ion B is idle. CCBS call: a call set-up from subscriber A to destination B resulting from subscriber As acceptance of a CCBS recall. CCBS request: A request by Subscriber A against an NDUB destination B requesting that subscriber A be automatically informed when destination B becomes idle. The CCBS
31、request shall be held in a CCBS queue pending the correct conditions for the CCBS request to be completed. Destination 6: the entity addressed in the original call set up. Subscriber A: the subscriber that originated the call, activated a CCBS request and is uniquely identifiable for CCBS recall. Su
32、spended CCBS request: a CCBS request which cannot be served even if destination B is idle, because subscriber A is CCBS busy, not reachable or is not idle and ignores the CCBS recall. Resumed CCBS request: a CCBS request which was suspended before and has become not suspended as a result of subscrib
33、er A becoming idle, not CCBS busy or reachable again. Automatic deactivation: an action by the network resulting in removal of all reference to a CCBS request without informing the subscriber. Automatic deactivation is performed after a successful CCBS procedure or for exceptional situations. Timers
34、 at the originating side (A): CCBS retention timer (Tl): this timer specifies the amount of time that the network retains the call information when the call encounters busy. The value shall be greater than 15 seconds. The upper limit of the CCBS retention timer is a network option. CCBS service dura
35、tion timer (T3): the maximum time the CCBS request will be active within the network. The value of this period is a network option, in the range of 15 to 45 minutes. CCBS recall timer (T4): the maximum time the network will wait for a subscriber A response to a CCBS recall when subscriber A is idle.
36、 The value of this timer is a network option and shall be in the range 20 to 30 seconds. CCBS notification timer (TlO): the maximum time the network will wait for a subscriber A response to a CCBS recall when subscriber A is not idle and not CCBS busy. The value of the timer is a network option and
37、shall be in the range 20 to 30 seconds. CCBS resume timer (Tll): the timer started as soon as a suspended CCBS request is resumed, making sure only one CCBS request is becoming resumed at a time. Duration of the timer shall allow a CCBS recall resulting from the destination side CCBS queue being pro
38、cessed. The value of the timer is a network option and shall be in the range 20 to 25 seconds. Timers at the terminating side (6): CCBS service duration timer (Ti): is the timer which specifies the maximum length of time the CCBS request will be held within the network. The value of this period is a
39、 network option shall be greater than 45 minutes. Destination B idle guard timer (TS): the time the network will wait after destination B has become idle before initiating a “CCBS recall“ to subscriber A. The value of this timer is a network option and shall be in the range O to 15 seconds. STD-ETSI
40、 GSM 02.73-ENGL 1798 3400855 02bbOL7 blb Page 9 GSM 02.93 version 5.5.0: January 1998 NOTE 1: This timer enables destination B to initiate a call before any notification is given to subscriber A that destination B has become idle and prevents destination B to receive incoming calls. CCBS recall B ti
41、mer (TS): is the timer, which supervises the CCBS recall establishment on the B- side. The value is a network option and shall be shall be in the range of 40 to 55 seconds. NOTE 2: This timer prevents destination B from receiving other incoming calls than from subscriber A. NOTE 3: The timer values
42、may vary from one PLMN to another and thus give the subscriber a slightly different perception of the service as she roams between PLMNs. 3.2 Abbrevi ations For the purposes of this specification the following abbreviations apply: CCBS Completion of Calls to Busy Subscriber NDUB Network Determined U
43、ser Busy Additional GSM related abbreviations may be found in GSM 01.04. 4 Description When subscriber A encounters a Network Determined User Busy (NDUB) destination B, subscriber A can request the CCBS supplementary service (.e. activate a CCBS Request against destination B). The network will then
44、monitor the wanted destination B for becoming idle. When the wanted destination B becomes idle, then the network will wait a short time in order to allow destination B to make an outgoing call. If destination B does not make any outgoing call within this time, then the network shall automatically re
45、call subscriber A. When subscriber A accepts the CCBS recall, within a defined time, then the network will automatically generate a CCBS call to destination B. CCBS has to be supported by the originating, as well as by the terminating network. 4.1 Applicability to telecommunications services The app
46、licability of the CCBS supplementary service is defined in GSM 02.04. 5 Normal procedures with successful outcome 5.1 Provision 5.1.1 Subscriber A The CCBS supplementary service shall be provided to subscriber A after prior arrangement with the service provider. This supplementary service is provisi
47、oned for all Basic Services (BS) subscribed to and to which it is applicable, .e. not provisioned to any subset of these BSs. 5.1.2 Subscriber B Subscriber B is the user of destination 6 and is not provided with the CCBS supplementary service. However, if provided by the network operator/cervice pro
48、vider as an option, subscriber B may elect not to be a target of CCBS requests. In this case, the size of her destination B CCBS queue shall be reduced to zero length by the service provider. Only the service provider may subsequently change the destination B CCBS queue length on demand of subscribe
49、r B. STDOETSI GSM 02-73-ENGL 1798 3q00855 02bb020 338 M Page 10 GSM 02.93 version 5.5.0: January 1998 5.2 Withdrawal The CCBS supplementary service shall be withdrawn at the customers request or for administrative reasons. At the same time, all outstanding CCBS requests shall be automatically deactivated. 5.3 Registration Not applicable. 5.4 Erasure Not applicable. 5.5 Act vation The CCBS service shall be activated as a result of provisioning. A CCBS request shall be activated by the mobile subscriber on a per-call basis by a control procedure as describe
