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@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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