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Content for TS 24.008 Word version: 18.0.0

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…

5.1 Overview 5.1.1 General 5.1.2 Call Control States 5.2 Call establishment procedures 5.2.1 Mobile originating call establishment 5.2.2 Mobile terminating call establishment 5.2.3 Network initiated MO call $(CCBS)$ 5.2.4 Call establishment for SRVCC or vSRVCC
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5 Elementary procedures for circuit-switched Call Control p. 265

5.1 Overview p. 265

5.1.1 General p. 265

5.1.2 Call Control States p. 273

5.1.2.1 Call states at the mobile station side of the interface p. 273

5.1.2.1.1 Null (State U0) p. 273

5.1.2.1.2 MM Connection pending (U0.1) p. 273

5.1.2.1.2a CC prompt present (U0.2) $(CCBS)$ p. 273

5.1.2.1.2b Wait for network information (U0.3) $(CCBS)$ p. 273

5.1.2.1.2c CC-Establishment present (U0.4) $(CCBS)$ p. 273

5.1.2.1.2d CC-Establishment confirmed (U0.5) $(CCBS)$ p. 273

5.1.2.1.2e Recall present (U0.6) $(CCBS)$ p. 273

5.1.2.1.3 Call initiated (U1) p. 273

5.1.2.1.4 Mobile originating call proceeding (U3) p. 274

5.1.2.1.5 Call delivered (U4) p. 274

5.1.2.1.6 Call present (U6) p. 274

5.1.2.1.7 Call received (U7) p. 274

5.1.2.1.8 Connect Request (U8) p. 274

5.1.2.1.9 Mobile terminating call confirmed (U9) p. 274

5.1.2.1.10 Active (U10) p. 274

5.1.2.1.11 Disconnect request (U11) p. 274

5.1.2.1.12 Disconnect indication (U12) p. 274

5.1.2.1.13 Release request (U19) p. 274

5.1.2.1.14 Mobile originating modify (U26) p. 274

5.1.2.1.15 Mobile terminating modify (U27) p. 274

5.1.2.2 Network call states p. 275

5.1.2.2.1 Null (State N0) p. 275

5.1.2.2.2 MM connection pending (N0.1) p. 275

5.1.2.2.2a CC connection pending (N0.2) $(CCBS)$ p. 275

5.1.2.2.2b Network answer pending (N0.3) $(CCBS)$ p. 275

5.1.2.2.2c CC-Establishment present (N0.4) $(CCBS)$ p. 275

5.1.2.2.2d CC-Establishment confirmed (N0.5) $(CCBS)$ p. 275

5.1.2.2.2e Recall present (N0.6) $(CCBS)$ |R11| p. 275

5.1.2.2.3 Call initiated (N1) p. 275

5.1.2.2.4 Mobile originating call proceeding (N3) p. 275

5.1.2.2.5 Call delivered (N4) p. 275

5.1.2.2.6 Call present (N6) p. 275

5.1.2.2.7 Call received (N7) p. 276

5.1.2.2.8 Connect request (N8) p. 276

5.1.2.2.9 Mobile terminating call confirmed (N9) p. 276

5.1.2.2.10 Active (N10) p. 276

5.1.2.2.11 Not used p. 276

5.1.2.2.12 Disconnect indication (N12) p. 276

5.1.2.2.13 Release request (N19) p. 276

5.1.2.2.14 Mobile originating modify (N26) p. 276

5.1.2.2.15 Mobile terminating modify (N27) p. 276

5.1.2.2.16 Connect Indication (N28) p. 276

5.2 Call establishment procedures p. 276

5.2.1 Mobile originating call establishment p. 277

5.2.1.1 Call initiation p. 278

5.2.1.2 Receipt of a setup message p. 278

5.2.1.3 Receipt of a CALL PROCEEDING message p. 280

5.2.1.4 Notification of progressing mobile originated call p. 280

5.2.1.4.1 Notification of interworking in connection with mobile originated call establishment p. 280

5.2.1.4.2 Call progress in the PLMN/ISDN environment p. 281

5.2.1.5 Alerting p. 281

5.2.1.6 Call connected p. 281

5.2.1.7 Call rejection p. 282

5.2.1.8 Transit network selection p. 282

5.2.1.9 Traffic channel assignment at mobile originating call establishment p. 282

5.2.1.10 Call queuing at mobile originating call establishment p. 283

5.2.1.11 Speech Codec Selection p. 283

5.2.1.12 Cellular Text telephone Modem (CTM) selection |R5| p. 284

5.2.2 Mobile terminating call establishment p. 284

5.2.2.1 Call indication p. 284

5.2.2.2 Compatibility checking p. 285

5.2.2.3 Call confirmation p. 285

5.2.2.3.1 Response to SETUP p. 285

5.2.2.3.2 Receipt of CALL CONFIRMED and ALERTING by the network p. 286

5.2.2.3.3 Call failure procedures p. 287

5.2.2.3.4 Called mobile station clearing during mobile terminating call establishment p. 287

5.2.2.4 Notification of interworking in connection with mobile terminating call establishment p. 287

5.2.2.5 Call accept p. 287

5.2.2.6 Active indication p. 288

5.2.2.7 Traffic channel assignment at mobile terminating call establishment p. 288

5.2.2.8 Call queuing at mobile terminating call establishment p. 288

5.2.2.9 User connection attachment during a mobile terminating call p. 289

5.2.2.10 Speech Codec Selection p. 289

5.2.2.11 Cellular Text telephone Modem (CTM) selection |R5| p. 289

5.2.3 Network initiated MO call $(CCBS)$ p. 289

5.2.3.1 Initiation p. 289

5.2.3.2 CC-Establishment present p. 289

5.2.3.2.1 Recall Alignment Procedure p. 291

5.2.3.3 CC-Establishment confirmation p. 292

5.2.3.4 Recall present p. 292

5.2.3.5 Traffic channel assignment during network initiated mobile originating call establishment p. 293

5.2.4 Call establishment for SRVCC or vSRVCC |R8| p. 293

5.2.4.1 General p. 293

5.2.4.2 Call activation for SRVCC p. 293

5.2.4.2a Call activation for vSRVCC |R11| p. 295

5.2.4.2b Multimedia CAT and vSRVCC handover |R11| p. 296

5.2.4.3 Traffic channel assignment and user connection attachment p. 296

5.2.4.4 State verification |R10| p. 296