1、3404583 0078077 T89 Released: July I, 1993 GSM 02.83 Version: 4.6.3 Date: 9 June, 1993 Work Item No: Key words: European dig i ta I ce1 I u lar telecommunication system (phase 2); CALL COMPLETION SUPPLEMENTARY SERVICES European Telecommunications Standards Institute ETSI Secretariat: Route des Lucio
2、les, F-O6921 Sophia Antipolis Cedex . France TP. + 33 92 94 42 00 TF. + 33 93 65 47 16 Tx. 47 O0 40 F This is an unpublished work the copyright in which vests in the European Telecommunications Standards Institute. All rights reserved. The information contained herein is the property of ETSI and no
3、part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be embodied. . 3404583 0078078 915 Page 3 GSM 02.83 . verslon 4.6.3 : June 1993 CONTENTS O
4、 CALL COMPLETION SUPPLEMENTARY SERVICES . 5 o . 1 GENERAL 5 1 CALL WAITING . 6 1.1. DEFINITION . 6 1.2. DESCRIPTION . 6 1.3. NORMAL PROCEDURES WITH SUCCESSFUL OUTCOME 6 1.4. EXCEPTIONAL PROCEDURES OR UNSUCCESSFUL OiJTCOME 8 1.5. ALTERNATE PROCEDURES . 8 1.6. INTERACTIONS WITH OTHER SUPPLEMENTARY SER
5、VICES . 8 1.7. INTERWORKING CONSIDERATIONS 9 2 CALL HOLD 10 2.1 DEFINITION . 10 2.2 DESCRIPTION . 10 2.3 NORMAL PROCEDURES WITH SUCCESSFUL OUTCOME 10 2.4 EXCEPTIONAL PROCEDURES OR UNSUCCESSFUL OUTCOME 12 2.5 ALTERNATE PROCEDURES . 13 2.6 INTERACTIONS WITH OTHER SUPPLEMENTARY SERVICES . 13 2.7 INTERW
6、ORKING CONSIDERATIONS 13 Previous page is blank m 3404583 0078079 8.51 Page 5 GSM 02.83 - verslon 4.6.3 : June 1993 O CALL COMPLETION SUPPLEMENTARY SERVICES o. 1 GENERAL This specification describes the supplementary services belonging to the group CALL COMPLETiON SUPPLEMENTARY SERVICES. The general
7、 aspects, including definitions and recommended provision, of the description of the GSM supplementary services are given in specification GSM 02.04. The group of CALL COMPLETION SUPPLEMENTARY SERVICES is divided into the following Wo supplementary services: - Call waiting (chapter 1): - Call hold (
8、chapter 2); Previous page is blank = 3404583 0078080 573 Page 6 GSM 02.83 - version 4.6.3 : June 1993 1 CALL WAITING 1.1. DEFINITION The Call Waiting Service permits a mobile subscriber to be notified of an incoming call (as per basic call procedures) whilst the traffic channel (Bm or Lm) is not ava
9、ilable for the incoming call. Subsequently, the subscriber can either accept, reject, or ignore the incoming call. 1.2. DESCRIPTION 1.2.1. Dercriptlon This service operates when the traffic channel (Bm or Lm) at the controlling subscriber B is not aval i ab le. When a third party (calling subscriber
10、 C) attempts to connect to that termination the controlling subscriber 6 is given an appropriate indication of the waiting call. A notification that the call is waiting will be sent back towards the calling subscriber C. The maximum number of waiting calls at one time per mobile access is one. This
11、means that no further calls are offered to the subscriber while a call is waiting. Note: As a network option this maximum number of waiting calls may be greater than one. This is considered as a possible future enhancement. 1.2.2. Applicability to telecommunication services This service is applicabl
12、e to all GSM telecommunication services using a circuit switched connection, except Emergency Calls. (The incoming, waiting, call may be of any kind). 1.2.3. Termlnology JControllinq) subscriber B This is the subscriber who is provided by the network with the Call Waiting Service and who reacts to t
13、he Call Waiting. Subscriber C This is the subscriber who has originated a call to B which causes the Call Waiting Service to be invoked. Subscriber A This represents a subscriber who is engaged in a call with 6, being either the calling or the called Party. T2: No answer time out The duration of thi
14、s time out is the time the network will wait for a response from subscriber B, to the offered call from subscriber C. The value of the timer is between 0.5 and 2 minutes at the service providers discretion. 1.3. NORMAL PROCEDURES WITH SUCCESSFUL OUTCOME 1.3.1. Provision This supplementary service is
15、 provisioned for ali Basic services subscribed to and to which it is applicable, .e. not provisioned to any subset of these BSs. Page 7 GSM 02.83 - version 4.6.3 : June 1993 1.3.2. withdrawal Withdrawal will be at the request of the subscriber or for administrative reasons. 1.3.5. Ac tlva ti o n Thi
16、s supplementary service will be activated either collectively for all applicable Basic Services or on a Basic Service group basis by the subscriber using a control procedure, as specified in GSM 02.30, or by the service provider. The controlling subscriber shall be informed by the network of the suc
17、cess or otherwise of her action. 1.3.6. Deactlvatlon The service will be deactivated either collectiveiy for all applicable Basic Services or on a Basic Service group basis by the subscriber using a control procedure, as specified in GSM 02.30, or by the service provider. The controlling subscriber
18、shall be informed by the network of the success or otherwise of- her action. 1.3.7. Invocatlon This service is invoked by the network on arrival of an incoming call if the service is active and the controlling subscriber Bs traffic channel is not available and there is no other call currentiy waitin
19、g, 1.3.8. Normal operation wlth successful outcome 1.3.8.1. When an incoming call from subscriber C arrives, the served mobile subscriber is connected to - at least - one call (active or held) and a NDUB (Network Determined User Busy) condition does not exist, then the CW service shall be invoked an
20、d the call shall be offered to subscriber B with an appropriate indication, e.g. with a “Call Waiting Tone“ (refer to TS GSM 02.40). If a response to the offered call is received from the mobile termination at B. then the subscriber C shall be given an indication (e.g. ringing tone) that the called
21、subscriber is being informed of the incoming call and, if possible, that call waiting is in operation. 1.3.8.2. If either subscriber A or subscriber B requests that the call is terminated, then this call shall be terminated as for basic call (see GSM 02.30 for more information). Subscriber B shall t
22、hen be given the normal notification that there is a new call to her, as for a normal terminating call. The network shall continue to indicate; e.g. ringing tone towards subscriber C as for a normal call. B can then accept the call from C before the expiry of T2. Subscriber B can also free resources
23、 by using the Call Hold Supplementary Service. Subscriber B shall then be able to accept the waiting call from subscriber C before the expiry of T2. Alternatively, subscriber B may specifically request release or hold of the connection to A and accept the waiting call as one action (see GSM 02.30).
24、In this case the network connects subscriber B to subscriber C with no further notifications to either subscriber. This must be done before the expiry of T2. 1.3.1 1. Interrogatlon Status check The controlling subscriber may interrogate the network by the use of a control procedure, as specified in
25、GSM 02.30. The network shall respond with an appropriate indication telling the 3404583 0078082 346 Page 8 GSM 02.83 - version 4.6.3 : June 1993 subscriber whether the service is supported in this network and, if so, provide a list of all Basic Service groups to which the Call waiting supplementary
26、service is active. 1.4. EXCEPTIONAL PROCEDURES OR UNSUCCESSFUL OUTCOME 1.4.1. incoming call from subscriber C ignored by subscriber B If no response is received by the network from controlling subscriber B before the expiry of T2 then the network shall inform the controlling subscriber B that the ca
27、ll is no longer waiting. Subscriber C shall then be given a no reply indication, unless e.g. Call Forwarding applies. The call waiting service is then made available for a subsequent incoming call. 1.4.2. incoming call from subscriber C is indicated as UDUB by subscriber 6 (or terminai B) If the wai
28、ting call is indicated as UDUB by B before the expiry of T2 the subscriber C shall be given a busy indication, unless e.g. Call Forwarding applies. The call waiting service is then made available for a subsequent incoming call. 1.4.3. Release by subscriber C within the specified period If calling su
29、bscriber C terminates the call attempt to subscriber B before the expiry of T2, the call attempt from C shall be terminated, as for basic call, and subscriber B shall be notified. 1.4.4. Incoming call from subscriber C is rejected by subscriber B If the waiting call is explicitly rejected by 6 befor
30、e the expiry of T2 the subscriber C shall be given a reject indication. The call waiting service is then made available for a subsequent incoming call. 1.5. ALTERNATE PROCEDURES None identified 1.6. INTERACTIONS WITH OTHER SUPPLEMENTARY SERVICES 1.6.81.1. Calling Une identification Presentation See
31、GSM 02.81 section 1.6.83.1. 1.6.82.1. Cali forwarding unconditionai If call forwarding unconditional has been activated, it takes precedence over call waiting. Call forwarding unconditional can be activated while a call is waiting without changing the state of the waiting call. 1.6.82.2. Call forwar
32、ding on mobile subscriber busy No impact, .e. neither supplementary service shall affect the operation of the other supplementary service. The following text clarifies the situation: If user B is NDUB (Network Determined User Busy), Call Forwarding shall take place, and the call is not offered to B.
33、 If B is not NDUB, the call shall be offered to B, and if the UDUB (User DUB) condition occurs, then the Call Forwarding shall take place. 1.6.82.3. Call forwarding on no reply If the CFNRy is active and operative for the called subscriber then a waiting call shall still be offered as described in s
34、ection 1.3.8.1 (call waiting indication). If no response is received to this 3404583 0078083 282 Page 9 GSM 02.83 - verslon 4.6.3 : June 1993 call before the expiry of the No Reply Condition timer then the call forwarding on no reply service becomes invoked and the call is forwarded as per that call
35、 forwarding on no repiy service description. 1.6.83.2. Call hold The served user may use the Call Hold service to answer subsequentiy a waiting call from C. If the served mobile subscriber has an active call and a call one hold the network can still offer an incoming call with the waiting indication
36、 .e. the NDUB condition is not used the normal way (n=2 not 1). Note: Although the call is offered to the subscriber she cannot accept the call as long as she has one active call and one call on hold. If the served mobile subscriber has a call on hold and no active call, an incoming call is offered
37、as a waiting call. 1.6.84.2. MultiParty See GSM 02.84 section 1.6.83.1. 1.6.88.6. Barrlng of all Incomlng calls Invocation of Barring of Incoming Calls takes precedence over invocation of Call Waiting. Call waiting cannot be activated if barring of incoming calls is activated. The mobile subscriber
38、requesting for call waiting shall be informed of this supplementary service incompatibility. The activation of barring of incoming calls does not affect any currently waiting calls. 1.6.88.7. Barrlng of Incoming calls when roaming outside the home PLMN country When active and operative, same as inte
39、raction with Barring of All Incoming Calls. 1.7. I NTERWOR KI NO CON SI DE RAT1 ON S Calls originating from outside the ISDN/PLMN can undergo call waiting at B. A special in-band indication may be provided to the calling subscriber instead of the normal indication. m 3404583 0078084 119 m Page 10 GS
40、M 02.83 - vorrlon 4.6.3 : June 1993 2 CALL HOLD 2. i DEFINITION The call hold service allows a served mobile subscriber ,who is provisioned with this supplementary service, to interrupt communication on an existing active call and then subsequently, if desired, re-establish communication. The traffi
41、c channel remains assigned to the mobile subscriber after the communication is interrupted to allow the origination or possible termination of other calls. 2.2 DESCRIPTION 2.2.1 Description When the call hold service is invoked, communication is interrupted on the traffic channel and the traffic cha
42、nnel is released from the existing call. The traffic channel is reserved for the served mobile suscriber invoking the call hold service. The served mobile subscriber can only have one call on hold at a time. One traffic channel should be reserved for the served mobile subscriber as long as the subsc
43、riber has one call on hold and is currently not connected to any other call .e. the network should not reserve more than one traffic channel for a mobile station. If the served mobile subscriber has a call on hold and is not connected to an active call, she can: 1. Retrieve the held call. 2. Set up
44、another call. 3. Disconnect the held call. If the served mobile subscriber has a call on hold and is not connected to an active call she can not receive a call, except when using the Call Waiting Supplementary Service. For additional information see section 2.6.83.1 (Interaction with Call Waiting Su
45、pplementary Service). If the served mobile subscriber is connected to an active call and has another call on hold, she can : 1. 2. Disconnect the active call. 3. Disconnect the held call. 4. Disconnect both calls. Alternate from one call to the other. If the served mobile subscriber is connected to
46、an active call and has another call on hold, she can not recieve a call. For additional information see section 2.6.83.1 (Interaction with Call Waiting Supplementary Service). 2.2.2 Appllcabllity to telecomrnunicatlon servlces This service is applicable to the teleservice Telephony oniy. Note: diffe
47、rent telecommunications service. If the served mobile subscriber has a call on hold she may set up another call using a 2.3 NORMAL PROCEDURES WITH SUCCESSFUL OUTCOME 2.3.1 Provision This supplementary service is provisioned for all basic services subscribed to and to which it is applicable, .e. not
48、provisioned to any subset of these BSs. 3404583 0078085 055 Page 11 GSM 02.83 - version 4.6.3 : June 1993 2.3.2 Wlthdrawal The service will be withdrawn at the subscribers request or for administrative reasons. 2.3.5 Activa tio n The Supplementary service will be activated by the service provider as
49、 a result of provision. 2.3.6 Deactivation The supplementary service will be deactivated by the service provider as a result of withdrawal. 2.3.7 invocation Call hold will be invoked by the served mobile subscriber by use of a control procedure as described in GSM 02.30. 2.3.8 Normal operation with successful outcome Hold request The served mobile subscriber indicates to the network that communication on the interface is to be interrupted. A call may be placed on hold: - - on the served calling subscribers interface by her at any time after the call has been answered and before call cl
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