3G-324M

3G-324M is the 3GPP umbrella protocol for video telephony in 3G mobile networks.

The 3G-324M protocol operates over an established circuit switched connection between two communicating peers. 3G-324M is an umbrella specification to enable conversational multimedia communication over Circuit Switched (CS) networks and has been adopted by the 3GPP. 3G-324M is based on the ITU-T H.324 specification for multimedia conferencing over Circuit switched networks. 3G-324M is composed of the following sub-protocols: ITU-T H.245 for call control ITU-T H.223 for bit streams to data packets multiplexer/demultiplexer ITU-T H.223 Annex A and B for error handling of low and medium BER detection, correction and concealment ITU-T H.324 with Annexes A and C for operating in wireless environment