Hi, Is there any way to tell Freeswitch to enable VBR and VAD on Speex channels as it appears to be disabled by default and I can't find any mention of it in the wiki or previous mailing list posts. The client is sending the following SDP: a=rtpmap:111 speex/16000/1 a=fmtp:111 vbr=on a=rtpmap:110 speex/8000/1 a=fmtp:110 vbr=on a=rtpmap:0 GSM/22050/1 a=rtpmap:0 GSM/11025/1 a=rtpmap:3 GSM/8000/1 a=rtpmap:0 PCMU/8000/1 a=rtpmap:8 PCMA/8000/1 a=rtpmap:113 iLBC/8000/1 a=fmtp:113 mode=30 a=rtpmap:101 telephone-event/8000/1 a=fmtp:101 0-11 a=sendrecv And receiving back the following without vbr=on which disables it in the client: a=rtpmap:111 speex/16000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 Cheers, Dan