Patent ID: 8145262

Claim:
A land mobile radio (LMR) comprising: a common LMR application module configured to generate LMR content formatted in accordance with an LMR application layer protocol format; an LMR communication module configured to support a plurality of LMR services by communicating said LMR content over an LMR network using an LMR network transport protocol, said LMR communication module including said common LMR application module and an LMR transport module; a cellular data network communication module configured to support said plurality of LMR services by communicating said LMR content over a cellular data network using a cellular network transport protocol, and without conversion of said LMR content from said LMR application layer protocol format to a cellular application layer protocol format, said cellular data network communication module including said common LMR application module, an LMR encapsulation module and a cellular radio modem; said LMR encapsulation module configured to encapsulate said LMR content using a packet switching protocol, without said conversion of said LMR content, when communicating using the cellular data network, said packet switching protocol including an Internet Protocol (IP) layer, and wherein said LMR encapsulation module is configured to encapsulate said LMR content exclusive of any intermediate presentation or session protocol layer between an LMR application layer and said IP layer; a selector coupled to said LMR communication module and said cellular data network communication module; an input/output module including transmission and receiving components configured for transmitting and receiving to and from an LMR network and a cellular data network; and a processor coupled to said selector and configured to select one of said LMR communication module and said cellular data network communication module for communicating said LMR content from said common LMR application module.