Any chance you can find the person who designed their SIP stack and hit him with a ClueBat?<div>-MC<br><br><div class="gmail_quote">On Fri, Jun 17, 2011 at 4:14 AM, Matteo <span dir="ltr"><<a href="mailto:mbrancaleoni@voismart.it">mbrancaleoni@voismart.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi all,<br>
<br>
I've the following scenario from my upstream provider :<br>
<br>
FS calls provider<br>
Provider sends easrly media with 183 announcing that the call is going to be trasferred<br>
Provider sends 180 without sdp<br>
<br>
In my dialplan I'm using ringback variable to let FS generate ringback<br>
to internal network, and if I receive 180 without 183 is working ok.<br>
<br>
What I'm trying to achieve is to let ringback work even if we've already received<br>
the 183 with sdp.<br>
<br>
I've tryed a lot of dialplan magic without luck.<br>
Maybe we need to add this support into FS itself ?<br>
<br>
What I see seems that we need to break the bridge or at least<br>
"inject" the tone stream into the internal leg of the call.<br>
<br>
To be fair, the exact sequence is:<br>
<br>
FS calls provider<br>
provider sends 183/sdp annoucing the call trasnfer<br>
provider sends update which stops the media (media=inactive)<br>
provider sends 180 ringing (we must generate here)<br>
<br>
maybe the correct way is to handle the update, put fs back<br>
into ringing state and proceed from there?<br>
Is feasible or we can get the same result with some dialplan magic?<br>
<br>
any hint is appreciated :)<br>
<br>
regards,<br>
matteo<br>
<br>
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</blockquote></div><br></div>