Patent ID: 8200268

Claim:
An apparatus, comprising: an intercom system; a wireless push-to-talk cellular terminal; and an integrated intercom/push-to-talk system operatively coupled to the intercom system and to the wireless push-to-talk cellular terminal, the integrated intercom/push-to-talk system functioning as a wireless terminal that communicates with the wireless push-to-talk cellular terminal, and functioning as an intercom unit in the intercom system, wherein the intercom system has a plurality of intercom units, and wherein push-to-talk communication is facilitated between any of the plurality of intercom units and the wireless push-to-talk cellular terminal, and wherein the intercom system has a plurality of intercom units, the integrated intercom/push-to-talk system functioning as one of the intercom units, wherein the wireless push-to-talk cellular terminal includes a plurality of push-to-talk cellular terminals, the integrated intercom/push-to-talk system functioning in push-to-talk communication with at least one of the push-to-talk cellular terminals, and wherein the push-to-talk cellular terminals has a predetermined identifier that indicates to other push-to-talk cellular terminals that the integrated intercom/push-to-talk system is coupled to intercom units, wherein incoming push-to-talk calls to the intercom system are simultaneously played on all of the intercom units of the intercom system so that all would hear the call.