Content for TS 24.379 Word version: 18.7.0
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12 Emergency alert
12.0 General
12.1 On-network emergency alert
12.1.1 Client procedures
12.1.2 Participating MCPTT function procedures
12.1.3 Controlling MCPTT function procedures
12.1A On-network MCPTT adhoc group emergency alert
12.2 Off-network emergency alert
12.2.1 General
12.2.2 Basic state machine
12.2.3 Procedures
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12 Emergency alert p. 532
12.0 General p. 532
12.1 On-network emergency alert p. 532
12.1.1 Client procedures p. 532
12.1.1.1 Emergency alert origination p. 532
12.1.1.2 Emergency alert cancellation p. 534
12.1.1.3 MCPTT client receives an MCPTT emergency alert or call notification p. 535
12.1.1.4 MCPTT client receives notification of entry into or exit from a group geographic area p. 537
12.1.1.5 MCPTT group in-progress emergency group state cancel p. 538
12.1.1.6 MCPTT client receives notification of entry into or exit from an emergency alert area p. 539
12.1.2 Participating MCPTT function procedures p. 539
12.1.2.1 Receipt of a SIP MESSAGE request for emergency notification from the served MCPTT client p. 539
12.1.2.2 Receipt of a SIP MESSAGE request for emergency notification for terminating MCPTT client p. 541
12.1.2.3 Receipt of a SIP MESSAGE request indicating successful delivery of emergency notification p. 542
12.1.3 Controlling MCPTT function procedures p. 542
12.1.3.1 Handling of a SIP MESSAGE request for emergency notification p. 542
12.1.3.2 Handling of a SIP MESSAGE request for emergency alert cancellation p. 544
12.1.3.3 Handling of a SIP MESSAGE request for in-progress emergency group state cancellation p. 547
12.1.3.4 Late emergency alert initiated by controlling MCPTT function p. 549
12.1A On-network MCPTT adhoc group emergency alert p. 549
12.1A.1 Client procedures p. 549
12.1A.1.1 Emergency alert origination p. 549
12.1A.1.2 Emergency alert cancellation p. 551
12.1A.1.3 MCPTT client receives an MCPTT adhoc emergency alert notification p. 552
12.1A.1.4 Void
12.1A.2 Participating MCPTT function procedures p. 553
12.1A.2.1 Receipt of a SIP MESSAGE request for emergency notification from the served MCPTT client p. 553
12.1A.2.2 Receipt of a SIP MESSAGE request for adhoc emergency notification for terminating MCPTT client p. 554
12.1A.2.3 Receipt of a SIP MESSAGE request indicating successful delivery of emergency notification p. 555
12.1A.2.4 Adhoc group emergency alert participants determination procedure p. 555
12.1A.2.5 Adhoc group emergency alert participants determination stop procedure p. 557
12.1A.2.6 Adhoc group emergency alert participants modify procedure initiated by participating MCPTT function p. 557
12.1A.3 Controlling MCPTT function procedures p. 558
12.1A.3.1 Handling of adhoc group emergency alert notification p. 558
12.1A.3.2 Handling of adhoc group emergency alert cancellation p. 559
12.1A.3.3 Handling of ongoing adhoc group emergency alert p. 560
12.1A.3.4 Adhoc group emergency alert participants determination procedures p. 561
12.1A.3.5 Adhoc group emergency alert participants determination stop procedures p. 563
12.1A.3.6 Handling of adhoc group emergency alert participants modify procedure initiated by participating MCPTT function p. 564
12.2 Off-network emergency alert p. 565
12.2.1 General p. 565
12.2.2 Basic state machine p. 565
12.2.2.1 General p. 565
12.2.2.2 Emergency alert state machine p. 565
12.2.2.3 Emergency alert states p. 565
12.2.3 Procedures p. 566
12.2.3.1 Originating user sending emergency alert p. 566
12.2.3.2 Emergency alert retransmission p. 566
12.2.3.3 Terminating user receiving emergency alert p. 566
12.2.3.4 Terminating user receiving retransmitted emergency alert p. 567
12.2.3.5 Originating user cancels emergency alert p. 567
12.2.3.6 Terminating user receives GROUP EMERGENCY ALERT CANCEL message p. 567
12.2.3.7 Implicit emergency alert cancel p. 568
