A system and method of admission control for authorizing a submission of a broadcast message to a broadcast target area includes receiving a broadcast message record including the broadcast message and the broadcast target area for the broadcast message and validating the authority of a broadcast message originator originating the broadcast message record as a function of a broadcast message originator parameter. The method also includes identifying a broadcast transmission network providing broadcast message transmission to broadcast message receiving devices located within the broadcast target area and validating the broadcast transmission network against a broadcast transmission network parameter. The method further includes forwarding the broadcast message record to an output interface associated with the broadcast transmission network for transmission to the broadcast message receiving devices within the broadcast target area.