G.12 MCVideo private emergency alert state

24.2813GPPMission Critical Video (MCVideo) signalling controlProtocol specificationRelease 18TS

Table G.5-1provides the semantics of the MCVideo private emergency alert (MVPEA) 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 private calls and MCVideo emergency alerts and their cancellations. MCVideo private emergency alerts are targeted to an MCVideo user.

Table G.12-1: MCVideo private emergency alert state

MCVideo emergency alert state values

State-entering events


MVPEA 1: no-alert

initial state

emergency alert cancelled

emergency alert request denied

emergency alerts targeted to an MCVideo user can be cancelled in several ways:

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

timeout of private call inactivity timer

end of call (if system policy)

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

MVPEA 2: emergency-alert-confirm-pending

emergency alert request sent

emergency alerts can be requested as an optional part of a MCVideo client’s request to initiate an MCVideo emergency private call, in which case the request has an <alert-ind> element set to "true".

MCVideo emergency state: is set

MVPEA 3: emergency-alert -initiated

emergency alert response (success) received

MCVideo emergency state: is set

MVPEA 4: emergency-alert-cancel-pending

emergency alert cancellation request sent by alert originator

MCVideo emergency state: is clear

Annex H (informative):
On-network routing considerations