I use FreePBX 188.8.131.52 and I have set in the General SIP Settings the Codec G729 as the first codec, and then uLaw and aLaw and GMS. I can call without problems from SIP phone to SIP phone if both supports the G729 codec. Soon as I call a device that don’t support the G729 codec (it doesn’t matter if I call from G729 phone to non G729 phone or from non to non G729 phone) I get a Declined 603 error soon as I answer the phone. What could be wrong? As I mentioned I have enabled several codecs and I thought if a device don’t support a certain codec they will choose one that both support.
Thanks for your help.