1、. . , . . . - . STD-ETSI TS LOL ZBY-ENGL 1999 W 3400855 0442Lb2 O10 ETSI TS 1 O1 284 V7.0.0 (1999-08) Technical Specification Digital cellular telecommunications system (Phase 2+); Completion of Calls to Busy Subscriber (CCBS); Stage 3 (GSM 04.93 version 7.0.0 Release 1998) (GSM 04.93 version 7.0.0
2、Release 1998) 2 ETSI TS 1 O1 284 V7.0.0 (1999-08) Reference RTS/SMG-O30493Q7 (bw003i03.PDF) Keywords Digital Cellular Telecommunications System, Global System for Mobile communications (GSM) ETSI Postal address F-O6921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia An
3、tipolis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) No 7803/88 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Internet secretariat 8 et.si.fr Individual copies of this ETSI deliverable can be downloaded from http:/
4、www.etsi.org If you find errors in the present document, send your comment to: editoretsi.fr Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Sta
5、ndards Institute 1999. All rights reserved. STD-ETSI TS LCL 284-ENGL 1999 3400855 0442Lb3 T57 U . STD-ETSI TS 101 284-ENGL 1999 3400855 04421b4 993 (GSM 04.93 version 7.0.0 Release 1998) 3 ETSI TS 1 O1 284 V7.0.0 (1 999-08) Contents Intellectual Property Rights 4 Foreword 4 1 Scope 5 2 References 5
6、3 Definitions and abbreviations 6 3.1 Definitions . 6 3.2 Abbreviations . 6 4 General . 7 4.1 Overview 7 4.2 Activation . 7 4.3 CCBS Recall and CCBS Call Set-up . 9 4.3.1 CCBS Call Set-up (MS A idle) 9 4.3.2 CCBS Call Set-up (MS A not idle) 11 4.3.2.1 Existing call released 11 4.3.2.2 Existing call
7、placed on hold 13 4.4 Deactivation . 15 4.5 Interrogation 16 Annex A (informative): Operation for Non-Supporting MSs . 18 A.0 SCO pe 18 A.l MSs which do not support CCBS 18 A.l.l Activation for non supporting MSs 18 A.2 CCBS Call Set-up for non supporting MSs . 20 A.3 Deactivation for non supporting
8、 MSs 21 A.4 Interrogation for non supporting MSs 21 Annex B (informative): Status of Technicai Specification GSM 04.93 . 22 History 23 (GSM 04.93 version 7.0.0 Release 1998) 4 ETSI TS 1 O1 284 V7.0.0 (1 999-08) Intellectual Property Rights IPRs essential or potentially essential to the present docum
9、ent may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in SR O00 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI
10、standards“, which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existenc
11、e of other IPRs not referenced in SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by the Special Mobile Group (SMG). The present document gives the stage 3 descrip
12、tion of the Completion of Calls to Busy Subscriber (CCBS) supplementary service within the digital cellular telecommunications system (Phase 2Phase 2+). The contents of the present document are subject to continuing work within SMG and may change following formal SMG approval. Should SMG modify the
13、contents of the present document it will then be re-issued with an identifjing change of release date and an increase in version number as follows: Version 7.x.y where: 7 GSM Phase 2+ Release 1998; x the second digit is incremented for all other types of changes, i.e. technical enhancements, correct
14、ions, updates, etc.; y the third digit is incremented when editorial only changes have been incorporated in the specification. (GSM 04.93 version 7.0.0 Release 1998) 5 ETSI TS 101 284 V7.0.0 (1999-08) 1 Scope The present dcoument gives the stage 3 description of the Completion of Calls to Busy Subsc
15、riber (CCBS) supplementary service. The present document specifies the procedures used at the radio interface (Reference point Um as defined in GSM 04.02) for normal operation, activation, deactivation, invocation and interrogation of the completion of calls to busy subscriber supplementary services
16、. Provision and withdrawal of supplementary services is an administrative matter between the mobile subscriber and the service provider and cause no signalling on the radio interface. In GSM 04.10 the general aspects of the specification of supplementary services at the layer 3 radio interface are g
17、iven. GSM 04.80 specifies the formats and coding for the supplementary services. Definitions and descriptions of supplementary services are given in GSM 02.04, GSM 02.8 and GSM 02.9-series. Technical specification GSM 02.93 is related specifically to the Completion of Calls to Busy Subscriber supple
18、mentary service. The technical realization of supplementary services is described in technical specifications GSM 03.11, GSM 03.8 and 03.9-series. GSM 03.93 is related specifically to Completion of Calls to Busy Subscriber supplementary service. The procedures for Call Control, Mobility Management a
19、nd Radio Resource management at the layer 3 radio interface are defined in GSM 04.07 and GSM 04.08. The following supplementary services belong to the call completion supplementary services and are described in the present document: - Completion of Calls to Busy Subscriber (CCBS) (see clause 4). 2 R
20、eferences The following documents contain provisions which, through reference in this text, constitute provisions of the present document. 0 References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. 0 For a specific reference, subsequen
21、t revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. 0 For this Release 1998 document, references to GSM documents are for Release 1998 versions (
22、version 7.x.y). u1 GSM 01.04: “Digital cellular telecommunications system (Phase 2+); “Abbreviations and acronyms“. GSM 02.04: “Digital cellular telecommunications system (Phase 2+); General on supplementary services“. 121 31 GSM 02.07: “Digital cellular telecommunications system (Phase 2+); Mobile
23、Stations (MS) features“. t41 GSM 02.30: “Digital cellular telecommunications system (Phase 2+); Man-Machine Interface (MMI) of the Mobile Station (MS)“. GSM 02.93: “Digital cellular telecommunications system (Phase 2+); Completion of Calls to Busy Subscriber (CCBS) Service description, Stage 1“. GSM
24、 03.1 1: “Digital cellular telecommunications system (Phase 2+); Technical realization of supplementary services“. i51 161 (GSM 04.93 version 7.0.0 Release 1998) 6 ETSI TS 1 O1 284 V7.0.0 (1 999-08) 71 GSM 03.93: “Digital cellular telecommunications system (Phase 2+); Technical realization of Comple
25、tion of Calls to Busy Subscriber (CCBS)“. GSM 04.02: “Digital cellular telecommunications system (Phase 2+); GSM Public Land Mobile Network (PLMN) access reference configuration“. BI 91 GSM 04.07: “Digital cellular telecommunications system (Phase 2+); Mobile radio interface signalling layer 3 Gener
26、al aspects“. GSM 04.08: “Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 specification“. GSM 04.1 O: “Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 Supplementary services specification General aspects“. GSM 04.80: “Digital
27、 cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 supplementary services specification Formats and coding“. GSM 04.83: “Digital cellular telecommunications system (Phase 2+); Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 3“. lo1 11 11 I121 u31 3 3
28、.1 Definitions and abbreviations Definit ions For the purposes of the present document the following definitions apply. Subscriber A: The user of MS A, requesting CCBS. Destination B: The entity addressed in the original call set up, which is busy when first called by subscriber A. 3.2 Abbreviations
29、 For the purposes of the present document the following abbreviations apply: CCBS MS A NDUB Network Determined User Busy Further related abbreviations are given in GSM 01.04 Completion of Calls to Busy Subscriber Mobile Station of subscriber A STD-ETSI TS LOL 284-ENGL 1949 W 3400855 0442367 bT2 - (G
30、SM 04.93 version 7.0.0 Release 1998) 7 ETCI TC 1 O1 284 V7.0.0 (1 999-08) 4 4.1 General Overview CCBS allows a calling subscriber A, encountering a Network Determined User Busy (NDUB) called destination B, to be notified when destination B is idle and to have the network reinitiate the call to desti
31、nation B. if subscriber A desires, All of the radio signalling specific to CCBS is at the subscriber A-side. Each procedure is described in turn. There is no radio signalling specific to CCBS at destination B-side. The radio signalling on the destination B-side uses basic call signalling procedures
32、only. A mobile station that supports CCBS shall support the requirements of the following options used in GSM 04.08: 1) Prolonged Clearing Procedure; 2) Network Initiated Mobile Originated Connection Management (MO CM) Connection Request; 3) Network initiated MO call. A network supporting CCBS shall
33、 support the requirements of the following options used in GSM 04.08: 1) CCBS Request activation; and 2) Network initiated MO call. 4.2 Activation When CCBS is allowed the network shall give subscriber A the option of activating a CCBS Request. The network shall send a DISCONNECT message to MS A (ca
34、use #17 (User Busy) or cause #34 (no circuit / channel available) with diagnostic field indicating CCBS is Possible and allowed actions indicating CCBS is Possible. The network starts the retention timer T1 when it sends the DISCONNECT message. The MS shall not release the connection with the networ
35、k if allowed actions is present. If subscriber A attempts to activate a CCBS Request, MS A shall send a RELEASE message, with the Facility information element indicating CCBSRequest and the network shall stop T1. If the subscriber A does not accept CCBS activation, the MS shall send normal RELEASE m
36、essage and the network shall stop T1 and continue normal call clearing. If the timer T1 expires before the RELEASE message is received from the MS, the network shall continue normal call clearing. If the network accepts the activation attempt, it shall acknowledge it by sending a RELEASE COMPLETE me
37、ssage containing the Facility information element with the CCBS index and optionally the AddressOfB, SubAddressOfB and the BasicServiceCode. If the network rejects the activation attempt, it shall send a RELEASE COMPLETE message containing the Facility information element with a return error indicat
38、ion. If a TCH has been allocated for the initial call and there are no further need for this channel configuration, the network may reconfigure the ongoing connection from TCH(s) mode to SDCCH only mode while waiting for further user input activity. It is a network option to maintain the ongoing con
39、nection in TCH mode while waiting for further user input activity. SS Version Indicator value 3 or above has to be used. STD-ETSI TS 101 28rl-ENGL 1999 W 3400855 OI421bB 539 (GSM 04.93 version 7.0.0 Release 1998) 8 ETSI TS 1 O1 284 V7.0.0 (1 999-08) MS A NETWORK SETUP (Note 1) (Bearer capability, CC
40、 capabilities, Called party BCD number) . DISCONNECT (Note 2) (Cause #I 7 (User Busy) / Cause #34 (no circuitchannel available), diagnostic = CCBSPossible, allowed actions = CCBS Possible) . NOTE 1 : The BC may be modified by the MS as long as the same Basic Service Group is maintained. NOTE 2: The
41、MS releases the transaction if the BC,HLC,LLC received in the CC ESTABLISHMENT message are incompatible with the MS, the MS cannot decode the contents of the “advanced recall alignment“ Facility information element correctly (see GSM 04.10) or the MS responds by indicating UDUB. NOTE 3: MS shall sta
42、rt CCBS Recall alerting on receiving the RECALL message. The CCBS timer T4 is started when the RECALL message is sent to the MS. SubAddress information may be included. The Alerting Pattern parameter may be included by the network to give some indication about alerting (category or level). If suppor
43、ted in the MS, this optional parameter is to be used by the MS as specified in GSM 02.07. NOTE 4: Subscriber A explicitly rejects the CCBS Recall or subscriber A responds to the CCBS Recall by indicating UDUB or ACM 2 ACMmax. NOTE 5: The network releases the transaction if CCBS timer T4 expires. NOT
44、E 6: The information elements within the SETUP message are derived from the Setup container in the CC ESTABLISHMENT Message. The SETUP message must contain the same BC(s) that was (were) sent to the network in the CC ESTABLISHMENT CONFIRMED message. Figure 4.3.1 : CCBS Call Set-up for supporting MSs
45、 - subscriber A idle when RECALL arrives (GSM 04.93 version 7.0.0 Release 1998) 11 ETSI TS 1 O1 284 V7.0.0 (1 999-08) 4.3.2 CCBS Call Set-up (MS A not idle) If a CCBS Recall is offered to MS A and MS A is not idle, subscriber A may accept the CCBS Recall and either release the existing call or put t
46、he existing call on hold. 4.3.2.1 Existing call released Notes to figure 4.3.2: NOTE 1: A new TI value indicated by “TI = CCBS call“ is allocated by the MS for the subsequent CCBS call. The already existing call is referred to by the TI value “TI = existing call“. NOTE 2: The BC may be modified by t
47、he MS as long as the same Basic Service Group is maintained. The MS shall indicate “User Busy“ if it is not idle. NOTE 3: The MS releases the transaction if the BC,HLC,LLC received in the CC ESTABLISHMENT message are incompatible with the MS, the MS cannot decode the contents of the “advanced recall
48、 alignment“ Facility information element correctly (see GSM 04.10) or the MS responds by indicating UDUB. W 3400855 0442172 TbT (GSM 04.93 version 7.0.0 Release 1998) 12 ETSI TS 1 O1 284 V7.0.0 (1 999-08) NOTE 4: MS shall start CCBS Recall alerting on receiving the RECALL message. The CCBS timer T10
49、 is started when the RECALL message is sent to the MS. Sub-Address information may be included. The Alerting Pattern parameter may be included by the network to give some indication about alerting (category or level). If supported in the MS, this optional parameter is to be used by the MS as specified in GSM 02.07. NOTE 5: Subscriber A explicitly rejects the CCBS Recall or subscriber A responds to the CCBS Recall by indicating UDUB or ACM 2 ACMmax. NOTE 6: The network releases the transaction if CCBS timer T10 expires. NOTE 7: The existing call is rele
