I swapped out a 7945 with a 7965. I set the proper attendant console user and password, and selected the MAC address for the new phone but I still get an error message as follows
Your administrator must associate the phone with a valid application user. what am I missing?
I am assuming you are on CUCM version 7.X and below and are using the Cisco built in AC application. If so, you need to associate the device with the authentication AC user per this guide:
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