rfc 3389 comfort noise As part of the RTP audio video profile, RFC 3389 defines a standard for distributing comfort noise information in VoIP systems. [3] Many radio stations broadcast birdsong, city-traffic or other atmospheric comfort noise during periods of deliberate silence..nha cai 33win hồ chí minh Zopf Standards Track [Page 6]RFC 3389 RTP Payload for Comfort Noise September 2002 [3] ITU Recommendation G.726 (12/90) - 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM). [4] ITU Recommendation G.727 (12/90) - 5-, 4-, 3- and 2-bits sample embedded adaptive differential pulse code modulation (ADPCM).mb66 com vn Can anyone explain to me what this means: Jun 14 19:46:10 NOTICE [7391]: rtp.c:331 process_rfc3389: Comfort noise support incomplete in Asterisk (RFC 3389). Please turn off on client if possible. Client IP: 66.175.1.1 When I try to make a call from certain IP phones, I see that message on the console. Thanks, Daniel