Unified Communications Infrastructure

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When configuring a new Unity Voicemail Account I receive this message : The phone number or extension has already been assigned to some other object. I understand that this means that the 10 digit number I am trying to configure as the alternate exte...

We are upgrading our core switches. During this process, the CUCM publisher and subscriber will be temporarily disconnected from the LAN network. Will this affect the CUCM cluster? Do we need to shut down the CUCM cluster servers during this time?

I'm trying to migrate from a 10.5 Publisher to 14 SU2 using a PCD running 14.0.1.12900-89.  I was able to discover the old cluster, create the migration cluster and the migration task.  When I go to run the migration, it runs for a while and then err...