Thanks, that seems to have been the problem with the codec negotiation. I can now get the correct codec with default and bypass-after-bridge. But I'm back to square one on getting G729 in passthrough mode working. It seems like all of the wiki entries saying to proxy media when doing that are partially incomplete, since proxy media prevents setting the absolute codec. I could use it with bypass-after-bridge, but my endpoints are most definitely behind NATs, so I'd rather keep the flow going through my box. Is there any way to achieve a "proxy-after-bridge"? Thanks, Nick ---------- Forwarded message ---------- From: Kristian Kielhofner <kris@kriskinc.com> To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Cc: Date: Fri, 5 Oct 2012 09:28:32 -0400 Subject: Re: [Freeswitch-users] Absolute Codec String

Don't use proxy_media. See my rant here:

http://wiki.freeswitch.org/wiki/Proxy_Media#Common_misconceptions_.28READ_TH... On Thu, Oct 4, 2012 at 1:47 PM, Nick Vines <jnvines@gmail.com> wrote:

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