Hi! If I try to call out on one of my voip providers I get INCOMPATIBLE_DESTINATION. Something is going wrong with codec negotiation: 2010-01-05 18:57:56.845029 [DEBUG] sofia.c:3845 Remote SDP: v=0 o=Sippy 257534956 1 IN IP4 80.232.37.178 s=- t=0 0 m=audio 47904 RTP/AVP 2 101 13 c=IN IP4 213.50.90.3 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [G721:2:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [G721:2:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [G721:2:8000:20]/[PCMU:0:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [G721:2:8000:20]/[PCMA:8:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3262 Set 2833 dtmf payload to 101 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [telephone-event:101:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [telephone-event:101:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [telephone-event:101:8000:20]/[PCMU:0:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [telephone-event:101:8000:20]/[PCMA:8:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [CN:13:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [CN:13:8000:20]/[G726-32:2:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [CN:13:8000:20]/[PCMU:0:8000:20] 2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec Compare [CN:13:8000:20]/[PCMA:8:8000:20] 2010-01-05 18:57:56.845029 [NOTICE] sofia.c:3937 Hangup sofia/external/020555500 [CS_CONSUME_MEDIA] [INCOMPATIBLE_DESTINATION] According to their website, the codec they us is G711 a-law or G729. What codecs have name CN and telephone-event? How do I get these to match? I assume the format of the debug output is: Audio Codec compare [Codec Name:Media Format:Media Name:Rate:RTP Size?] Thanks