Patent ID: 7839811

Claim:
A method for communicating land mobile radio (LMR) content, the method comprising: assigning a different traffic multicast Internet Protocol (IP) address to each of a plurality of talk groups; identifying at least one talk group of said plurality of talk groups having an active communication within a communication site; determining if an LMR unit, which is not currently participating in the active communication, is a subscriber to said identified talk group; identifying a traffic multicast IP address that is assigned to said identified talk group; communicating said traffic multicast IP address to said LMR unit only if it is determined that said LMR unit is a subscriber to said identified talk group; encapsulating the LMR content within IP packets; and transmitting the IP packets to or from said LMR unit and at least two other LMR units that are participating in said active communication using said traffic multicast IP address.