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<p class=MsoNormal>Dear I am trying to do call transfer, but it fails with SIP
481 message.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Scenario is like this:<o:p></o:p></p>
<p class=MsoNormal>2 phones registered to SER<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Phone 1 <-----> SER <-----> Phone 2<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>When making a call SER forwards all meassages to b2bua,
b2bua asks radius (gets all necessary info, routes ...etc) and sends call to
Phone 2. The call is sucesfully established, and everything works as expected
in both ways. Now the problem starts when I want to do Call Transfer, because I
immediatelly after establishing second line to the Phone 3 get SIP 481 Call
Leg/Transaction Does Not Exist. I get the same thing if I try to put caller on
HOLD from the party that answered the Call.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Phone1 -----> SER -----> B2BUA -----> Phone 2
----xfer-----> B2BUA -----> SIP 481<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am attaching b2bua log and also attaching sip and radius
tcpdump.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>P.S. <o:p></o:p></p>
<p class=MsoNormal>There is no NAT involved, I am just using private ips with
direct routing for test<o:p></o:p></p>
<p class=MsoNormal>P.P.S.<o:p></o:p></p>
<p class=MsoNormal>I have done only one modification to b2bua_radius.py to
change xpkg-routing parameter to be compatible with our billing/routing engine
(just to expect different radius attrib and it works fine)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Best regards,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Josip<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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