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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Can someone checks why, in the situation of a client that cancels
a call before the destination send a “180 ringing” to the proxy,
that causes some troble to the proxy because it is not forwarding the cancel to
the destination.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>See the following 2 examples :<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In this situation the cancel works fine:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.327850 10.112.128.220 -> 10.112.128.247 SIP/SDP
Request: INVITE sip:testef03@teste.pt, with session description<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.328725 10.112.128.247 -> 10.112.128.220 SIP Status:
100 trying -- your call is important to us<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.328778 10.112.128.247 -> 10.112.128.187 SIP/SDP
Request: INVITE sip:testef03@10.112.128.187:7678, with session description<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.576892 10.112.128.187 -> 10.112.128.247 SIP Status:
180 Ringing<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.577005 10.112.128.247 -> 10.112.128.220 SIP Status:
180 Ringing<o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>651.722172 10.112.128.220 ->
10.112.128.247 SIP Request: CANCEL sip:testef03@teste.pt<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>651.723047 10.112.128.247 ->
10.112.128.187 SIP Request: CANCEL sip:testef03@10.112.128.187:7678<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.723084 10.112.128.247 -> 10.112.128.220 SIP Status:
200 cancelling<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.723622 10.112.128.247 -> 10.112.128.220 SIP Status:
487 Request cancelled<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.724792 10.112.128.220 -> 10.112.128.247 SIP Request:
ACK sip:testef03@teste.pt<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.899824 10.112.128.187 -> 10.112.128.247 SIP Status:
200 OK<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.900593 10.112.128.187 -> 10.112.128.247 SIP Status:
487 Request Terminated<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>651.900666 10.112.128.247 -> 10.112.128.187 SIP Request:
ACK sip:testef03@10.112.128.187:7678<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In this one, the cancel never reaches the destination
client, so it keeps ringing…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>657.866834 10.112.128.220 -> 10.112.128.247 SIP/SDP
Request: INVITE sip:testef03@teste.pt, with session description<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>657.867667 10.112.128.247 -> 10.112.128.220 SIP Status:
100 trying -- your call is important to us<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>657.867720 10.112.128.247 -> 10.112.128.187 SIP/SDP
Request: INVITE sip:testef03@10.112.128.187:7678, with session description<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.068940 10.112.128.247 -> 10.112.128.187 SIP/SDP
Request: INVITE sip:testef03@10.112.128.187:7678, with session description<o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>658.083368 10.112.128.220 ->
10.112.128.247 SIP Request: CANCEL sip:testef03@teste.pt<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.084201 10.112.128.247 -> 10.112.128.220 SIP Status:
200 ok -- no more pending branches<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.084948 10.112.128.247 -> 10.112.128.220 SIP Status:
487 Request cancelled<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.085933 10.112.128.220 -> 10.112.128.247 SIP Request:
ACK sip:testef03@teste.pt<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.228348 10.112.128.187 -> 10.112.128.247 SIP Status:
180 Ringing<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>658.232010 10.112.128.187 -> 10.112.128.247 SIP Status:
180 Ringing<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Toni<o:p></o:p></span></font></p>
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