Patent ID: 7792899

Claim:
A method for providing one or more announcements for one or more communication sessions, comprising: facilitating one or more communication sessions among a plurality of endpoints, the plurality of endpoints comprising a half-duplex push-to-talk endpoint; establishing, by an interoperability system distinct from the endpoints, that a section of a button of the half-duplex push-to-talk endpoint has been deselected to yield a trigger event at the half-duplex push-to-talk endpoint, the trigger event indicating an activity status of the half-duplex push-to-talk endpoint; identifying, by the interoperability system, a set of two or more pre-recorded announcements associated with the trigger event from a plurality of sets of pre-recorded announcements, each set of pre-recorded announcements associated with a different trigger event, each announcement of the set corresponding to a different virtual talk group; and playing, by the interoperability system, the identified pre-recorded announcements by playing a first announcement of the set to a first virtual talk group and playing a second announcement of the set to a second virtual talk group.