[asterisk-users] 3way calling / codec problem

[Thomas Kenyon]

Mr. Jones wrote:
> I'm having problems with conference calls (3-way) when I have my codec
> forced to g729 in sip.conf.
> 
> I'm using Grandstream 2000s.
> 
> If enable both g711 and g729 then 3 way calling and transfers work.
> 
> I'm not sure why this would matter?
> 
> Here's the error:
> 
> Oct 13 13:54:45 NOTICE[31184] chan_sip.c: No compatible codecs!
> 
> Any help is greatly appreciated!

Are you out of licences? From memory when in a console each channel 
needs to be able to be transcoded to SLIN. (where it is mixed and 
transcoded back again).