Hi, When I make a call using asterisk (SIP - provider - PSTN), it is cutting out all the background noise, making it a bit like a walkie talkie when they stop talking. Is this something asterisk is doing?!? I have a 2MB leased line just for calls, so bandwidth is fine, I have tried with G711a/u and GSM codec but they all do the same. I'm using a Polycom IP501 to connect to asterisk, but have the VAD set to 0 in the config file to disable Voice Activity Detection on the phones. Could it be my provider trying to do this? As I have noticed on the CLI 'NOTICE[2530]: rtp.c:593 process_rfc3389: Comfort noise support incomplete in Asterisk (RFC 3389). Please turn off on client if possible.' Thanks, Dean.
<snip>> Hi, > > When I make a call using asterisk (SIP - provider - PSTN), it is cutting > out > all the background noise, making it a bit like a walkie talkie when they > stop talking. Is this something asterisk is doing?!? > > I have a 2MB leased line just for calls, so bandwidth is fine, I have > tried > with G711a/u and GSM codec but they all do the same. I'm using a Polycom > IP501 to connect to asterisk, but have the VAD set to 0 in the config file > to disable Voice Activity Detection on the phones. > > Could it be my provider trying to do this? As I have noticed on the CLI > 'NOTICE[2530]: rtp.c:593 process_rfc3389: Comfort noise support incomplete > in Asterisk (RFC 3389). Please turn off on client if possible.'</snip> Do what it says. Turn it off in the client (i.e. the phone).