Patent ID: 7286652

Claim:
A pseudo four-channel recording method for use in a packet telephony system, said system including a first endpoint, second endpoint and a recording device, said method comprising the steps of: generating data samples on said first endpoint corresponding to a first audio signal and generating data samples on said second endpoint corresponding to a second audio signal; tracking a second timestamp of data samples originating from said second endpoint that are played by said first endpoint and tracking a first timestamp of data samples originating from said first endpoint that are played by said second endpoint; sending a first stream of packets from said first endpoint to said recording device, said first stream of packets containing data samples generated by said first endpoint, a first timestamp corresponding thereto and the second timestamp corresponding to data samples from said second endpoint played by said first endpoint at that moment in time; sending a second stream of packets from said second endpoint to said recording device, said second stream of packets containing data samples generated by said second endpoint, a second timestamp corresponding thereto and the first timestamp corresponding to data samples from said first endpoint played by said second endpoint at that moment in time; and recording said first stream of packets and said second stream of packets representing the signals generated and played on said first endpoint and said second endpoint, respectively.