I have a Sangoma Transcoding Card installed in FreeSWITCH.

And my configuration is fine, and my vars.xml file I have like this,

<X-PRE-PROCESS cmd="set" data="global_codec_prefs=Sangoma G729,G722,PCMU,PCMA,GSM"/>

<X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=Sangoma G729,PCMU,PCMA,GSM"/>

Now in one end I have ulaw and alaw and in other end I have G729, when I try to dial from G729 to other end I get 488 error (Codec error).

Even though I have Sangoma Transcoding card still it shows error.

Thanks.