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Content for TS 24.008 Word version: 18.5.0

0… 2… 4… 4.2… 4.3… 4.4… 4.7… 4.7.5… 5… 5.3… 6… 9… 9.3… 9.3.18… 9.4… 9.4.9… 9.5… 9.5.10… 10… 10.5.4 10.5.5… A… E… I…

5.3 Signalling procedures during the "active" state p. 296

5.3.1 User notification procedure p. 296

5.3.2 Call rearrangements p. 297

5.3.3 Codec Change Procedure p. 297

5.3.4 Support of Dual Services p. 297

5.3.4.1 Service Description p. 297

5.3.4.2 Call establishment p. 297

5.3.4.2.1 Mobile Originating Establishment p. 297

5.3.4.2.2 Mobile Terminating Establishment p. 298

5.3.4.3 Changing the Call Mode p. 299

5.3.4.3.1 Initiation of in-call modification p. 299

5.3.4.3.2 Successful completion of in-call modification p. 299

5.3.4.3.3 Change of the channel configuration p. 300

5.3.4.3.4 Failure of in-call modification p. 300

5.3.4.4 Abnormal procedures p. 301

5.3.5 User initiated service level up- and downgrading (A/Gb mode and GERAN Iu mode only) p. 302

5.3.5.1 Initiation of service level up- and downgrading p. 302

5.3.5.2 Successful completion of service level up- and downgrading p. 302

5.3.5.3 Rejection of service level up- and downgrading p. 302

5.3.5.4 Time-out recovery p. 302

5.3.6 Support of multimedia calls p. 303

5.3.6.1 Service description p. 303

5.3.6.2 Call establishment p. 303

5.3.6.2.1 Mobile originated multimedia call establishment p. 303

5.3.6.2.2 Mobile terminating multimedia call p. 304

5.3.6.2.2.1 Fallback to speech p. 305

5.3.6.3 In-call modification in the "active" state p. 305

5.3.6.3.1 Void

5.3.6.3.2 Void

5.3.6.3.3 Void

5.3.6.4 Multimedia CAT during the alerting phase of a mobile originated call |R8| p. 305

5.3.6.5 DTMF transmission during a multimedia call |R8| p. 306

5.3.6.6 vSRVCC handover to a circuit-switched multimedia call |R11| p. 306

5.4 Call clearing p. 307

5.4.1 Terminology p. 307

5.4.2 Exception conditions p. 307

5.4.3 Clearing initiated by the mobile station p. 307

5.4.3.1 Initiation of call clearing p. 307

5.4.3.2 Receipt of a DISCONNECT message from the mobile station. p. 307

5.4.3.3 Receipt of a RELEASE message from the network p. 308

5.4.3.4 Receipt of a RELEASE COMPLETE message from the mobile station p. 308

5.4.3.5 Abnormal cases p. 308

5.4.4 Clearing initiated by the network p. 308

5.4.4.1 Clearing initiated by the network: mobile does not support "Prolonged Clearing Procedure" p. 308

5.4.4.1.1 Clearing when tones/announcements provided p. 308

5.4.4.1.2 Clearing when tones/announcements not provided p. 309

5.4.4.1.3 Completion of clearing p. 309

5.4.4.2 Clearing initiated by the network: mobile supports "Prolonged Clearing Procedure" p. 310

5.4.4.2.1 Clearing when tones/announcements provided and the network does not indicate that "CCBS activation is possible" p. 310

5.4.4.2.2 Clearing when the network indicates that "CCBS activation is possible" p. 310

5.4.4.2.3 Clearing when tones/announcements are not provided and the network does not indicate that "CCBS activation is possible" p. 312

5.4.4.2.4 Receipt of a RELEASE message from the mobile station p. 312

5.4.4.2.5 Completion of clearing p. 313

5.4.5 Call clearing for SRVCC from CS to PS |R11| p. 313

5.5 Miscellaneous procedures p. 313

5.5.1 In-band tones and announcements p. 313

5.5.2 Call collisions p. 314

5.5.3 Status procedures p. 314

5.5.3.1 Status enquiry procedure p. 314

5.5.3.2 Reception of a STATUS message by a CC entity p. 314

5.5.3.2.1 STATUS message with incompatible state p. 314

5.5.3.2.2 STATUS message with compatible state p. 314

5.5.4 Call re-establishment, mobile station side p. 315

5.5.4.1 Indication from the mobility management sublayer p. 315

5.5.4.2 Reaction of call control p. 315

5.5.4.3 Completion of re-establishment p. 315

5.5.4.4 Unsuccessful outcome p. 315

5.5.5 Call re-establishment, network side p. 315

5.5.5.1 State alignment p. 315

5.5.6 Progress p. 316

5.5.7 DTMF protocol control procedure p. 316

5.5.7.1 Start DTMF request by the mobile station p. 316

5.5.7.2 Start DTMF response by the network p. 316

5.5.7.3 Stop DTMF request by the mobile station p. 317

5.5.7.4 Stop DTMF response by the network p. 317

5.5.7.5 Sequencing of subsequent start DTMF requests by the mobile station p. 317