The protocol conversion system in the media of communication circuit-switched network-to-network - packet-switched network

摘要

And a protocol conversion unit and a call connection unit and a protocol conversion device for converting protocols between the circuit switched network and the packet switched network in the media communication via the circuit switched network and a packet switched network. Call connection unit performs the call connection processing of media communication between the terminal of the circuit-switched network side and terminal of the packet-switched network side. Protocol conversion unit specifies the encoding bit rate of the audio data in the audio packet by analyzing the audio packets received from the packet switched network. Subsequently, the protocol conversion unit specifies the multiplex table used in multiplexing frames on the circuit switched network from the encoding bit rate. In addition, the protocol conversion unit transmits to the circuit-switched network by generating a frame by multiplexing with the multiplex table that was specified, the data in the payload of packets received from the packet switched network.