[Freeswitch-users] Transcoding iLBC/GSM

[Anthony Minessale]

not enough data, do you have iLBC in your configs and mod_ilbc loaded?
you need more data like a trace "console loglevel debug" "sofia global
siptrace on"

On Fri, Nov 4, 2011 at 9:47 AM, Pete Kelly <pkelly at gmail.com> wrote:

> 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
>
>
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-- 
Anthony Minessale II

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