Discontinuous comfort noise transmission

摘要

Communication links between elements of a communication system are used more efficiently by transmitting comfort noise messages discontinuously. When periods of silence or messages containing comfort noise are detected, a single comfort noise message is transmitted rather than a long sequence of comfort noise messages. As a result, the bandwidth of communication links is not wasted by sending large numbers of messages containing comfort noise. The comfort noise is reconstructed at a communication element receiving the reduced number of messages by generating new comfort noise messages to replace the missing comfort noise messages. One method of regenerating comfort noise messages is to simply repeat the most recently received comfort noise message until a new comfort noise message is received.