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Help with troubleshooting PRI inbound call

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phonedudeSr

IS-IT--Management
Oct 5, 2011
265
US
I have a remote site that all users are not receiving inbound calls. When dialing a phone the caller after a period of time gets a re-order. We have a 2911 router that has a one PRI, the interface is up with no errors The phones register to the main cluster CUCM 8.5. The infrastructure is not experiencing any problems. I checked the route plan and nothing has changed. What might be the cause of the problem.
 
Debug isdn q931 would be the first debug I would run.

Certifications:
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