Content for TS 24.379 Word version: 18.1.0
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10.1.2
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10.2 Off-network group call p. 343
10.2.1 General p. 343
10.2.1.1 Common Procedures p. 343
10.2.2 Basic call control p. 344
10.2.2.1 General p. 344
10.2.2.2 Basic call control state machine p. 344
10.2.2.3 Call Control states p. 345
10.2.2.3.1 S1: start-stop p. 345
10.2.2.3.2 S2: waiting for call announcement p. 345
10.2.2.3.3 S3: part of ongoing call p. 345
10.2.2.3.4 S4: pending user action without confirm indication p. 345
10.2.2.3.5 S5: pending user action with confirm indication p. 345
10.2.2.3.6 S6: ignoring incoming call announcements p. 345
10.2.2.3.7 S7: waiting for call announcement after call release p. 345
10.2.2.4 Procedures p. 346
10.2.2.4.1 General p. 346
10.2.2.4.1.1 Call announcement timer calculation p. 346
10.2.2.4.1.2 Max duration timer calculation p. 346
10.2.2.4.2 Call Probe p. 346
10.2.2.4.2.1 Call probe initiation p. 346
10.2.2.4.2.2 Call probe retransmission p. 347
10.2.2.4.2.3 Receiving GROUP CALL PROBE message when participating in the ongoing call p. 347
10.2.2.4.3 Call setup p. 347
10.2.2.4.3.1 Not receiving any response to GROUP CALL PROBE message p. 347
10.2.2.4.3.2 Receiving a GROUP CALL ANNOUNCEMENT message p. 348
10.2.2.4.3.3 Receiving a GROUP CALL ANNOUNCEMENT message when not participating in the ongoing call p. 348
10.2.2.4.3.4 MCPTT user accepts the terminating call with confirm indication p. 349
10.2.2.4.3.5 MCPTT user accepts the terminating call without confirm indication p. 350
10.2.2.4.3.6 Receiving GROUP CALL ACCEPT message p. 350
10.2.2.4.3.7 MCPTT user rejects the terminating call p. 350
10.2.2.4.3.8 MCPTT user does not act on terminating call p. 350
10.2.2.4.4 Periodic group call announcement p. 351
10.2.2.4.4.1 Sending periodic call announcement p. 351
10.2.2.4.4.2 Receiving periodic call announcement p. 351
10.2.2.4.5 Call release p. 352
10.2.2.4.5.1 MCPTT user leaves the call when GROUP CALL ANNOUNCEMENT was sent or received p. 352
10.2.2.4.5.2 Receiving GROUP CALL ANNOUNCEMENT message for rejected or released call p. 352
10.2.2.4.5.3 MCPTT user initiates originating call for rejected or released call p. 352
10.2.2.4.5.4 No GROUP CALL ANNOUNCEMENT messages for rejected or released call p. 353
10.2.2.4.5.5 MCPTT user leaves the call when GROUP CALL PROBE was sent p. 353
10.2.2.4.5.6 MCPTT user initiates originating call for released call p. 353
10.2.2.4.5.7 Receiving GROUP CALL ANNOUNCEMENT message for released call p. 353
10.2.2.4.5.8 No GROUP CALL ANNOUNCEMENT messages for released call p. 354
10.2.2.4.5.9 Max duration reached p. 354
10.2.2.4.6 Merge of calls p. 354
10.2.2.4.7 Error handling p. 355
