1、 ETSI TS 122 091 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Explicit Call Transfer (ECT) supplementary service; Stage 1 (3GPP TS 22.091 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE C
2、OMMUNICATIONSRETSI ETSI TS 122 091 V15.0.0 (2018-07)13GPP TS 22.091 version 15.0.0 Release 15Reference RTS/TSGS-0122091vf00 Keywords GSM,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Assoc
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9、istered and owned by the GSM Association. ETSI ETSI TS 122 091 V15.0.0 (2018-07)23GPP TS 22.091 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to thes
10、e essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest
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13、 ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been
14、produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross referenc
15、e between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clau
16、se 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 122 091 V15.0.0 (2018-07)33GPP TS 22.091 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3F
17、oreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 Description . 7g34.1 Applicability to telecommunication services 7g35 Normal operation with successful outcome . 7g35.1 Provision 7g35.2 W
18、ithdrawal . 7g35.3 Registration 7g35.4 Erasure 7g35.5 Activation . 7g35.6 Deactivation . 7g35.7 Invocation . 7g35.8 Normal operation 8g35.9 Interrogation . 8g35.10 Charging requirements . 8g36 Exception procedures or unsuccessful outcome . 8g37 Alternate procedures. 9g38 Interaction with other suppl
19、ementary services . 9g38.1 Calling Line Identification Presentation (CLIP). 9g38.2 Calling Line Identification Restriction (CLIR) 9g38.3 Connected Line Identification Presentation (COLP) 9g38.4 Connected Line Identification Restriction (COLR) . 10g38.5 Call Forwarding Unconditional (CFU). 10g38.6 Ca
20、ll Forwarding on mobile subscriber Busy (CFB) . 10g38.7 Call Forwarding on No Reply (CFNRy) 10g38.8 Call Forwarding on mobile subscriber Not Reachable (CFNRc) . 10g38.9 Call Waiting (CW) . 10g38.10 Call Hold (HOLD) 10g38.11 Multi-party (MPTY) service. 11g38.12 Closed User Group (CUG) . 11g38.13 Advi
21、ce of Charge (AoC) 11g38.14 Barring of All Outgoing Calls (BAOC) . 11g38.15 Barring of all Outgoing International Calls (BOIC) . 11g38.16 Barring of all Outgoing International Calls except those direct to the Home PLMN Country (BOIC-exHC) . 11g38.17 Barring of All Incoming Calls (BAIC) . 11g38.18 Ba
22、rring of Incoming Calls when roaming outside the home PLMN country (BIC-Roam) 11g38.19 Call Transfer (CT) 12g39 Interworking considerations . 12g3Annex A (informative): Deviations of PLMN ECT to the ISDN specifications of ECT . 13g3A.1 Subclause 4.1 Applicability to telecommunication services 13g3A.
23、2 Subclause 5.8 Normal operation 13g3ETSI ETSI TS 122 091 V15.0.0 (2018-07)43GPP TS 22.091 version 15.0.0 Release 15A.3 Subclause 6 Exception procedures or unsuccessful outcome . 13g3A.4 Subclause 8.6 and 8.7 . 13g3A.5 Annexes 13g3Annex B (normative): Cross Phase compatibility . 14g3Annex C (informa
24、tive): Change history . 15g3History 16g3ETSI ETSI TS 122 091 V15.0.0 (2018-07)53GPP TS 22.091 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within t
25、he TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for i
26、nformation; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have be
27、en incorporated in the document. ETSI ETSI TS 122 091 V15.0.0 (2018-07)63GPP TS 22.091 version 15.0.0 Release 151 Scope The present document specifies the stage 1 description of Explicit Call Transfer (ECT) from the service subscribers and users points of view, in particular: - the procedures for no
28、rmal operation with successful outcome; - the action to be taken in exceptional circumstances; - the interaction with other supplementary services. The present document does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to the appropriate Technical Specifications. T
29、he charging principles applied to ECT are established in the present document in terms of the charging information required to be collected. Any subsequent charging implications are outside of the scope of the present document. Any interactions with other networks not dealt with in Clause 9 are outs
30、ide the scope of the present document. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specifi
31、c. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as
32、 the present document. 1 3GPP TS 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 22.030: “ Man-Machine Interface (MMI) of the Mobile Station (MS)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following definitions apply. Alerting state: the r
33、emote subscriber is being informed of the call (i.e. the connection has not yet been established for that call). Answered state: the connection has been established on the call to the remote subscriber. Subscriber A: is the served mobile subscriber, the one who has subscribed to, and invokes the Exp
34、licit Call Transfer supplementary service. Subscriber B: is the other party in one of subscribers As calls. By convention, in the present document it is considered that the connection has been established on this call. Subscriber C: is the other party in another of subscribers As calls. Subscriber D
35、: is the forwarded-to subscriber of call forwarded by subscriber C. NOTE: Each of subscriber B, C and D can be a mobile or a fixed subscriber, and each of them is referred to as “remote party“. ETSI ETSI TS 122 091 V15.0.0 (2018-07)73GPP TS 22.091 version 15.0.0 Release 15Successful invocation: The
36、ECT supplementary service is successfully invoked if the outcome of all checks (e.g. subscription, states of calls, resources) performed by the network on the received ECT request from the served subscriber are successful. 3.2 Abbreviations All abbreviations used within the present document are give
37、n in 3GPP TS 21.905 1. 4 Description The ECT supplementary service enables the served mobile subscriber (subscriber A) who has two calls , each of which can be an incoming or outgoing call, to connect the other parties in the two calls and release the served mobile subscribers own connection. Prior
38、to transfer, the connection shall have been established on the call between subscriber A and subscriber B. On the call between subscriber A and subscriber C, either the connection shall have been established prior to transfer, or, as a network option, transfer can occur while subscriber C is being i
39、nformed of the call (i.e. the connection has not yet been established.) 4.1 Applicability to telecommunication services This service is applicable to telephony (TS:11) only. 5 Normal operation with successful outcome 5.1 Provision The supplementary service shall be provided after pre-arrangement wit
40、h the service provider. The provision of the Call Hold (HOLD) supplementary service is also required. 5.2 Withdrawal The supplementary service shall be withdrawn at the subscriber request or for service provider reasons. 5.3 Registration Not applicable. 5.4 Erasure Not applicable. 5.5 Activation The
41、 supplementary service shall be activated by the service provider as a result of provision. 5.6 Deactivation The supplementary service shall be deactivated by the service provider as a result of withdrawal. 5.7 Invocation ECT shall be invoked by the served mobile subscriber by use of a control proce
42、dure as described in TS 22.030 2. ETSI ETSI TS 122 091 V15.0.0 (2018-07)83GPP TS 22.091 version 15.0.0 Release 155.8 Normal operation The served mobile subscriber (subscriber A) who has two calls (one with subscriber B and one with subscriber C), each of which can be an incoming call or an outgoing
43、call, can request the invocation of the ECT supplementary service with respect to the two calls. The connection shall have been established on one of the calls (referred to as the call between subscriber A and subscriber B). The ECT supplementary service can be invoked after the connection has been
44、established on the call between subscriber A and subscriber C, and in addition, as a network option, after subscriber C has been informed of the call (i.e. an outgoing call from subscriber A to subscriber C, where the connection has not yet been established). On successful invocation of the ECT supp
45、lementary service, the two calls between subscriber A and subscriber B and between subscriber A and subscriber C respectively shall be removed from subscriber As access (i.e. the traffic channel and the signalling channel towards subscriber A will be released) and shall be transformed into a normal
46、call between subscriber B and subscriber C where the state of the previously held party is changed to active without a subscriber action. The previously held party will be informed in the normal way of the retrieve procedure. If the network option above is supported, then if subscriber C is being in
47、formed of the call from subscriber A at the time of transfer, the call shall remain in this state at subscriber C (as a network option the ringing tone will be given to subscriber B), and when the connection is established by subscriber C, subscriber C shall be connected to subscriber B. Subscriber
48、A will no longer have any control of the on-going call between B and C. The network shall inform (if possible) subscriber B and subscriber C of the occasion that call transfer has happened including the state (connection established, or user being informed of the call) of the call to the other subsc
49、riber. If the network option above is supported, then after connection is established on a call which was transferred whilst subscriber C was being informed of that call, subscriber B shall be informed that the connection has been established on the call to subscriber C. The line identity of subscriber B shall be indicated to subscriber C as specified in subclauses 8.1 through 8.4. The line identity of subscriber C shall be indicated to subscriber B as specified in subclauses 8.1 through 8.4, either: - at the time of transfer, if the connection had been esta
