I am trying to set the codec when I bridge. I have late negotiation set to true, and since I am trying to use G729, I set proxy_media=true as well. I am using this in my dialplan (I have tried with and without "nolocal:" with no change): <action application="bridge" data="{absolute_codec_string=G729}sofia/gateway/gateway/${dialed_number}"/> But in the invite to the gateway, I am seeing the codecs offered by the device: m=audio 24960 RTP/AVP 18 0 2 8 9 96 97 98 101 a=rtpmap:18 G729/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:2 G726-32/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:9 G722/8000 a=rtpmap:96 G726-40/8000 a=rtpmap:97 G726-24/8000 a=rtpmap:98 G726-16/8000 a=rtpmap:101 telephone-event/8000 I am troubleshooting right now, so I am able to specify on the phone "Use Only Preferred", in which case I see only to following offered: a=rtpmap:18 G729/8000 Thanks, Nick