Patent ID: 7602769

Claim:
An audio packet switching system, comprising: a real time protocol unit including interface functions to perform real time protocol processing and controlling; a plurality of buffers coupled to correct a transmission speed of audio data transmitted and received irregularly to and from the real time protocol unit, and to correct for data lost during transmission; an audio coder unit coupled to compress and recover the audio data transmitted and received from the plurality of buffers and to perform data mixing between channels according to a user selection; and an audio packet router coupled to transmit audio packets received from the audio coder unit and to control data flow, wherein the real time protocol unit, the plurality of buffers, the audio coder unit, and the audio packet router are provided in a single integrated system, wherein the audio coder unit comprises: a decoder to transform audio data received as compressed data in a prescribed scheme according to a protocol of the data into pulse code modulation (PCM) data, an encoder to compress the PCM data to be transmitted in the prescribed scheme according to a prescribed protocol, and a mixer to mix the transformed PGM data at the decoder with PCM data of another channel according to a user's selection, wherein the mixer interfaces with a reception buffer of the plurality of mixers without regard to the real time protocol unit and carries the mixed data to the reception buffer to mix with audio data of the other channel.