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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’m not sure what OnDO is but it’s rejecting the TCP session
CUCM is trying to establish for the SIP call. You can try changing the
transport from TCP to UDP in the SIP profile for the trunk.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Ryan<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>On
Behalf Of </b>Alan Su<br>
<b>Sent:</b> Tuesday, June 02, 2009 6:49 AM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] SIP Trunk between CallManager 6 & OnDO Server<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Dear All,<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>I'm having a problem to make call from IP Phone registered
in CCM6 to SIP phone (X-lite) registered in OnDO.<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>Topology:<o:p></o:p></p>
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<p class=MsoNormal>IPPhone -- CCM6 <-- SIP Trunk --> OnDO -- XLite<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>All devices are in the same network segement.<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>When I make a call from XLite to IPPhone, it works. But when
I tried to make call from IPPhone to XLite, it just returned busy tone. I use
Ethereal in OnDO server to capture packets, it did receive the packet from
CCM6. The flow as below:<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>1. (source) CCM6, (destination) OnDO, (protocol) TCP, (info)
38988 > sip [SYN] seq=0 win=5840 len=0 mss=1460 tsv=612823 tser<o:p></o:p></p>
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<p class=MsoNormal>2. (source) OnDO, (destination) CCM6, (protocol) TCP, (info)
sip > 38988 [RST, ACK} seq=1 ack=1 win=0 len=0<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>Any suggestion would be very grateful, thanks a lot~<o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal>Regards,<o:p></o:p></p>
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<p class=MsoNormal>Alan<o:p></o:p></p>
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