G.5 MCVideo emergency alert state

24.2813GPPMission Critical Video (MCVideo) signalling controlProtocol specificationRelease 16TS

Table G.5-1provides the semantics of the MCVideo emergency alert (MVEA) state values. This is an internal state of the MCVideo client and is managed by the MCVideo client. These states aid in the managing of the information elements of MCVideo emergency group calls and MCVideo emergency alerts and their cancellations.

Table G.5-1: MCVideo emergency alert state

MCVideo emergency alert state values

State-entering events

Comments

MVEA 1: no-alert

initial state

emergency alert cancelled

emergency alert request denied

emergency alerts can be cancelled in several ways:

MCVideo emergency alert cancel request with <alert-ind> set to "false" (by initiator)

MCVideo emergency alert cancel request with <alert-ind> set to "false" (by authorised user)

MCVideo emergency group call cancel request with <alert-ind> set to "false"

MCVideo emergency state: may be set or clear, depending on MCVideo emergency call status

MVEA 2: emergency-alert-confirm-pending

emergency alert request sent

emergency alerts can be requested in several ways:

MCVideo emergency alert request with <alert-ind> set to "true"

MCVideo emergency group call request with <alert-ind> set to "true"

MCVideo emergency state: is set

MVEA 3: emergency-alert -initiated

emergency alert response (success) received

MCVideo emergency state: is set

MVEA 4: emergency-alert-cancel-pending

emergency alert cancellation request sent by alert originator

MCVideo emergency state: is clear