<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">While I am not sure if this would impact whatever issue you are having, are you running with the SIP normalization script provided in the following doc? Also, you might want to look through the rest of this doc to look for any other ideas:<br><a href="http://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/interoperability-portal/avaya-app-note-external.pdf">http://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/interoperability-portal/avaya-app-note-external.pdf</a><br><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">-Dave<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 13, 2015 at 3:45 PM, Michael T. Voity <span dir="ltr"><<a href="mailto:mvoity@uvm.edu" target="_blank">mvoity@uvm.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">That's the one thing I do not have. It unpredictable when it happens. NateCCIE responded to me off list indicating I should upgrade to 10.5.2SU2 and apply the COP. He indicated that there is a bug where CS1000 and CM don't play nice.<br>
<br>
-Mike<span class="im HOEnZb"><br>
<br>
Michael T. Voity<br>
Network Engineer<br>
University of Vermont<br></span><div class="HOEnZb"><div class="h5">
On 7/13/2015 3:36 PM, Mark Holloway wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Do you have a Wireshark capture of the SIP signaling for a failed call?<br>
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Jul 13, 2015, at 9:55 AM, Michael T. Voity <<a href="mailto:mvoity@uvm.edu" target="_blank">mvoity@uvm.edu</a>> wrote:<br>
<br>
Hello,<br>
<br>
Before we installed our Cisco CM 10.5.2 system everything here at the University is fed from a Nortel Avaya 81c / CS1000 system. The Telcom group has a bunch of systems on it that support SIP and SIP gateways. We setup a SIP trunk between the two systems from a guide that Avaya provided. It works fine like 99% of the time.<br>
<br>
I am finding that I have to reset the SIP trunk every couple of days because it looks like the Nortel is busying out all the channels and it can only pass certain traffic. Example is that someone from Nortel land dials a 5 digit extension that has been routed to CUCM, the line on CUCM rings once and then discos the call.<br>
<br>
Looking at RTMT on the SIP traffic I can tell that the Nortel is sending the "BYE" message on the trunk right when the CUCM sends the "RINGING" The only way that I have found to correct this is to reset the SIP trunk from CUCM.<br>
<br>
Has anyone see an issue like this and or heard of this?<br>
<br>
Any ideas would be helpful!<br>
<br>
-Mike<br>
<br>
-- <br>
Michael T. Voity<br>
Network Engineer<br>
University of Vermont<br>
<br>
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