This document explains the recommended workaround for the
Registration Rejected: Error DBConfig error
message. You might receive this error message when the IP phone auto-registers
to the Cisco Unified Communications Manager.
Cisco recommends that you have knowledge of Cisco Unified
Communications Manager and Cisco IP Phones.
The information in this document is based on Cisco Unified
Communications Manager 4.x and 7900 Series IP Phones.
Technical Tips Conventions for more information on document
Typically, a Registration Rejected: Error
DBConfig message indicates an issue with unassigned directory
Complete these steps in order to overcome this error message:
Go to the route plan report of the publisher and search for all of
the unassigned DNs. If there are any, delete those extensions using the
procedure described in
4.x: Delete Unassigned Directory Numbers Configuration Example. This
should take care of the error message.
Verify that Auto-registration Disabled on this Cisco
CallManager is unchecked under System > CallManager >
Server in the CCMAdmin.
Choose the respective Cisco CallManager group, normally the
default, and verify that Auto-registration Cisco CallManager
Group is checked.
Choose C:\Program Files\Cisco\TFTPPath and look
for the xmldefault.cnf file. Open the file with Notepad, and
make sure that the Cisco CallManager group is there. It appears as the IP
address of the servers group at the beginning of the file.
Check to see if a Certificate Trust List (CTL) is
Check for any replication issues.
If Cisco IP Phones cannot register to the Cisco CallManager with the
Registration Rejected Database Config Error
error message, and if the DBLHelper shows no issues with the replication, it
might be due to the blank hosts file and
lmhosts file. Make sure that you enter the
required information in these files followed by a
reset on the IP phone in order to resolve the issue.