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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello,<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'>we use Kamailio 3.0 on a Red Hat EL5.4 system with openssl
0.9.8e (the current Red Hat OpenSSL version). We want to use Kamailio 3.0 in
front of our Call Server (OpenSER 1.3.2) as a security gateway. So the Call
Server should only deal tcp, while the Security Gateway terminates the TLS Data
which he receives from the User Agents but forwards the SIP-Messages via TCP to
the Call Server.<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'>UA ---SIP_over_TLS---> Security Gateway (Kam3.0)
---SIP_over_TCP---> Call Server (OpenSER1.3.2)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>UA<---SIP_over_TLS--- Security Gateway (Kam3.0)
<---SIP_over_TCP--- Call Server (OpenSER1.3.2)<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'>Nearly everything works fine in this scenario: User Agents
are able to register and when they are sending INVITES the callee receives it. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The problem we have right now is: if Kamailio 3.0 receives
BYE we get „477 Unfortunatly error on sending to next hop occured“.
It seems that the messages are 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'>I attached a text file with the BYE message and the errors.<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'>Explanation for the text file: <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>* UA1: 192.168.0.126<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>* UA2: 192.168.0.176<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>*Security Gateway (Kam3.0): 192.168.0.89<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>*Call Server (OpenSER1.3.2): 192.168.0.106<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'>Do you have any suggestions?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you very much in advance!<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'>Regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Andreas<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>
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font-family:Arial'><o:p> </o:p></span></font></p>
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12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>Dipl.-Ing. (FH) Andreas Rehbein<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>FH Frankfurt am Main - University of Applied Sciences<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>FB 2 - Informatik und Ingenieurwissenschaften<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>Forschungsgruppe für Telekommunikationsnetze<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>Kleiststraße 3<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0cm'><font size=2 color="#999999"
face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>60318 Frankfurt am Main<o:p></o:p></span></font></p>
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face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
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face="Century Gothic"><span lang=EN-GB style='font-size:10.0pt;font-family:
"Century Gothic";color:#999999'>Tel.: +49 (0) 69 1533 3613<o:p></o:p></span></font></p>
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face="Century Gothic"><span lang=EN-GB style='font-size:10.0pt;font-family:
"Century Gothic";color:#999999'>Fax: +49 (0) 69 1539 5224 961<o:p></o:p></span></font></p>
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face="Century Gothic"><span style='font-size:10.0pt;font-family:"Century Gothic";
color:#999999'>E-Mail:</span></font><font size=2 face="Century Gothic"><span
style='font-size:10.0pt;font-family:"Century Gothic"'> <font color="#666699"><span
style='color:#666699'><a href="mailto:rehbein@e-technik.org"><font
color="#666699"><span style='color:#666699'>rehbein@e-technik.org</span></font></a></span></font><font
color=gray><span style='color:gray'><o:p></o:p></span></font></span></font></p>
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color:#999999'>Internet:</span></font><font size=2 face="Century Gothic"><span
style='font-size:10.0pt;font-family:"Century Gothic"'> <font color="#666699"><span
style='color:#666699'><a href="http://www.e-technik.org/frame_forschung.htm"><font
color="#666699"><span style='color:#666699'>http://www.e-technik.org/frame_forschung.htm</span></font></a></span></font><o:p></o:p></span></font></p>
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