Hi I am trying to get freeswitch to bridge 2 calls while maintaining iLBC or GSM for legA, and allowing legB to choose its own codec. This is because legA is on a low bandwidth connection so allowing PCMA/PCMU is unwise. This works fine on a freeswitch install where there is a Sangoma transcoding card installed, however when I try it on Freeswitch with no Transcode card, it just responds with a 488. I read in the docs that iLBC is only transcodable at ptime=30, do you think this could be the reason the transcode is not happening. The SDP looks like this from legA: v=0. o=- 3529404938 3529404938 IN IP4 10.15.20.104. s=pjmedia. c=IN IP4 188.39.51.2. t=0 0. m=audio 4213 RTP/AVP 104 3 98 97 99 8 0 96. a=rtcp:4001. a=rtpmap:104 iLBC/8000. a=rtpmap:3 GSM/8000. a=rtpmap:98 speex/16000. a=rtpmap:97 speex/8000. a=rtpmap:99 speex/32000. a=rtpmap:8 PCMA/8000. a=rtpmap:0 PCMU/8000. a=sendrecv. a=rtpmap:96 telephone-event/8000. a=fmtp:96 0-15. Anyone got any ideas/pointers I can look at? Thanks Pete