PROBLEM DESCRIPTION:
We have a Panasonic KX-NCP1000 phone system. We use the Panasonic PBX Unified Maintenance Console (MC) via LAN to programm it in interactive mode. Recently the user session which was connected to the KX-NCP1000 was broken due to a problem with the client computer. Now we are not able to reconnect to the KX-NCP system anymore. It seems there is some kind of lock which we cannot reset.

SYMPTOM ERROR:
E030103 Invalid Password or Model Type Error

WHAT DID WE TRY:
1. We have double checked the LAN connection settings (which was documented), so PBX model, IP, port and password are 100% correct. We even tried to connect via serial port, but no connection was possible.
2. We have tried to reset the KX-NCP (normal reset via button, power off, etc, NO initial reset to prevent loss of programm data). Result: MC connection still not working
3. We have tried to backup the system programm data from the SD card, change the DBSYS file offline in Maintenance Console batch mode and restart the KX-NCP again with the changed data. Result: Restart of KX-NCP was successfull with the changed data, but MC connection still not working

QUESTION:
How to reset the lock on the Maintenance console connection at the KX-NCP?

Help would be appreciated.

Best regards,
System installer @ Coenradie