Got it. I think there&#39;s different behavior when using late negotiation and early negotiation. Mike can explain a little more. We *may* have a bug.<br><div class="gmail_quote"><div dir="ltr">Em qui, 6 de jul de 2017 às 12:59, David Ponzone &lt;<a href="mailto:david.ponzone@gmail.com">david.ponzone@gmail.com</a>&gt; escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Italo,<div><br></div><div>That’s already what I use in a regexp condition on ${switch_r_sdp}.</div><div><br></div><div>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.</div></div><div style="word-wrap:break-word"><div><br><div><br class="m_3522820543033633403Apple-interchange-newline">
</div>

<br><div><blockquote type="cite"><div>Le 5 juil. 2017 à 21:25, Ítalo Rossi &lt;<a href="mailto:italo@freeswitch.org" target="_blank">italo@freeswitch.org</a>&gt; a écrit :</div><br class="m_3522820543033633403Apple-interchange-newline"><div><div dir="ltr">Try:<div><br></div><div>&lt;action application=&quot;export&quot; data=&quot;rtp_append_audio_sdp=a=fmtp:18 annexb=no&quot;/&gt;<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 5, 2017 at 12:03 PM, David Ponzone <span dir="ltr">&lt;<a href="mailto:david.ponzone@gmail.com" target="_blank">david.ponzone@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">All,<br>
<br>
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.<br>
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.<br>
<br>
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 ?<br>
<br>
Thank you<br>
<br>
<br>
<br>
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