<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:verdana, helvetica, sans-serif;font-size:10pt"><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">We
have a customer that we are sending calls to off the FS and here is the issue: <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Call
is initially setup fine and they send a first re-invite with media 0.0.0.0 to
place the caller on hold. FS sends a 200 ok to this first re-invite fine <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">They
then send a second re-invite with their media IP to cut through media and the
FS sends a 200 OK to this fine. At this point the call is fine <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">30
minutes later they send a third re-invite because according to them it is
strictly for the purpose of “keep alive” per RFC 4028. This third re-invite has
the exact same media IP and UDP pot information as the second re-invite does.
The problem is FS does not respond to this third re-invite AT ALL. It doesn’t
send a 100 trying a 200 OK nothing so this causes the call to be dropped as the
other end does not recieve a response from FS. <o:p></o:p></span></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif"><br></font></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif">One more thing, we did not see the third re-invite in sofia siptrace, but we do see it in ethereal, which is kind of odds.</font></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif"><br></font></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif">We are running FreeSWITCH Version 1.0.trunk (15979) in bypass media mode.</font></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif"><br></font></p><p class="MsoNormal"><font class="Apple-style-span" face="Arial, sans-serif">Thank you very much.</font></p></div><div style="position:fixed"></div>
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