[Freeswitch-users] Number of codecs offerred in SDP

[Tony Graziano]

I'm a newb to fs, but doesn't codec get neogtiated by the endpoints?
Wouldn't fs only get involved when its media server is referred to?

If the "other endpoint" will only accept G729, doesn't that mean you
need to change that endpoint to also accept G711 or also license G729
in FS?

On 6/23/10, Mark Campbell-Smith <mcampbellsmith at gmail.com> wrote:
> Test Setup:
>
> vars.xml:
>   <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G729,PCMU,GSM"/>
>   <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=G729,PCMU,GSM"/>
>
> The call setup is extension 1000 calls extension 1020
> 1. Extension 1000 calls with preferred codec PCMU.  PCMU is chosen by
> FS as the A-leg codec
> 2. Extension 1020 only supports GSM codec.  The call fails with Not
> Acceptable Here.
>
> FS only offers G729 and PCMU to 1020.  How do I change the number of
> codecs that are offered to an extension?  I know I can change the
> order in the codec_prefs, but would prefer FS to offer all three
> codecs to an extension.
>
>    m=audio 23662 RTP/AVP 0 18 101 13
>    a=rtpmap:0 PCMU/8000
>    a=rtpmap:18 G729/8000
>    a=rtpmap:101 telephone-event/8000
>    a=fmtp:101 0-16
>    a=rtpmap:13 CN/8000
>    a=ptime:30
>
> Thanks
>
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