We officially swapped over from REDCOM to CUCM on SIPR last night. All of our phones registered and function as intended except for one, a 8865NR cisco phone. The other phones that we have are 7942, 1945, and 7965s.
The phone functions normally but it cannot call a set of phone numbers that literally every other phone can call. We point our call manager to a RHN and it connects us to any other call manager whom we do not have a direct trunk built to. Do any of you have any ideas?