[Freeswitch-users] CELT codec code number

[Brian West]

On Jul 28, 2009, at 11:14 AM, Helmut Kuper wrote:

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> Hello,
>
> today I finylly got a working Ekiga Softphone version which is able to
> use high quality celt codec with FS :)
>
>
> On my way to get it work with FS I found that Ekiga currently uses  
> codec
> code 95 in SDP while FS uses 114. Changing FS to 95 made it works so  
> I'm
> now able to listen to my PBX-based MP3-Player on Windows Desktop  
> instead
> of using Ubuntu.

It should work if they use different codec numbers.... I suspect we  
are sending on 114 and receiving on 95 which is what should take  
place.  This is one of those areas most people fail to implement  
properly.  We send the remote our RTP map they send us theirs... Can  
you get a packet capture of this taking place so I can verify who is  
at fault?

/b



> veeeeeerrry cool work of FS team !!!!!
>
> Concerning the codec code 95, 114 or whatever I found the link below,
> which states that every codec code between 96 and 127 is OK but it  
> seems
> they prefer 97 ...
>
> http://tools.ietf.org/html/draft-valin-celt-rtp-profile-02#section-5
>
>
> You can get windows Ekiga 3.2.5 (with celt 0.5.1) here:
> http://wwwuser.gwdg.de/~mrickma/ekiga/ekiga-setup-3.2.5-release.exe
>

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