Real-time Transport Protocol (RTP) Payload for Comfort Noise (CN)
Lucent Technologies
This document describes an RTP [2] payload format for transporting comfort noise (CN). The CN payload type is primarily for use with audio codecs that do not support comfort noise as part of the codec itself such as ITU-T Recommendations G.711 [3], G.726 [4], G.727 [5], G.728 [6], and G.722 [7].