The display on a phone shows the message “Error DB Config” when trying to register to Cisco Unified Communications Manager via autoregistration.Which two options are ways to fix the problem? (Choose two.)
A. Add to the range of autoregistration DNs.
B. Restore only valid directory numbers using the CAR tool.
C. Delete the device, and its directory number will be deleted automatically.
D. Navigate to System > Route Plan Report > Unassigned DNs > Delete Selected
