[Freeswitch-users] G729 annexb=no not forwarded to leg B

[David Ponzone]

Italo,

That’s already what I use in a regexp condition on ${switch_r_sdp}.

My point was more to understand if it was the expected behavior. One would expect this parameter if requested by A to be forwarded to B by default.


> Le 5 juil. 2017 à 21:25, Ítalo Rossi <italo at freeswitch.org> a écrit :
> 
> Try:
> 
> <action application="export" data="rtp_append_audio_sdp=a=fmtp:18 annexb=no"/>
> 
> On Wed, Jul 5, 2017 at 12:03 PM, David Ponzone <david.ponzone at gmail.com <mailto:david.ponzone at gmail.com>> wrote:
> All,
> 
> If I receive an INVITE from Leg A (Patton GW) with G729 and annexb=no in the SDP, I would expect annexb=no to be automatically inserted in the SDP to Leg B.
> It seems either with export absolute_codec_string=G729, and without it (so I send G729 and G711 to Leg B), annexb=no is not sent to Leg B.
> 
> Is there any parameters or any configuration issue which may lead to annex=no being suppressed (which is an issue, as some carriers default to annexb=yes), or is it the normal behavior, meaning I have to manually export it to leg B if it was requested by A ?
> 
> Thank you
> 
> 
> 
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> -- 
> Ítalo Rossi
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