SIP trunk on CUCM

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Jun 4th, 2008
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Having issues with droped calls withing 3 mintues. seems that the telco is not responding to my invite and the call drops after the 180 timeout. is there any setting on CUCM that need to be looked at? want to make sure everything is set on CUCM before going after the telco.

we had drops on calls at 45 minutes but fixed that by changing the SIP session timer setting in enterprise settings. changed to 56700 and now we are ok in theory or at least hid the problem but not fixed.

???any thoughts or ideas on what we should check on CUCM or on the router??

handoff is on Cisco 2851. 3 T1s multilinked riding MPLS to Paetec.



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akleemann Tue, 06/10/2008 - 22:48
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Hi MC,

we have also the problem that call will be dropped after 45 minutes.

What timers had you changed?

The SIP session timer is located in Serviceparameters for callmanager.

Did you mean the SIP Session expires timer ?

And what behavior had your change in our solution.

Is this a bug in CUCM ?




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