Ericsson Phone Systems - Handsets lock up

Phone System Model - unknown at this time, provided by Thorton Communications

What the user sees
The red light on their log-in / log-out button on the ericsson telephone will stay on. None of the buttons will respond.

The Cause The cause is unknown. Thorton's report that it is down to the 'sheer volume of calls', though it has been proven this it not the case.

The Fixnote - when I refer to [enter] press 2nd #

1. From one of the management phones login to the admin screen by pressing *00# followed by the admin password. Press [enter]
2. Press the button directly below the word System that appears on the LCD screen
3. Enter the code 0301 [enter][enter]
4. Press the button below the c/i on the LCD once
5. Use the forward and backward buttons to navigate the phone extensions until you find the one you need. Press [enter]
6. Use the forward and backward buttons to navigate the command buttons looking for the code 29 which means log-in/log-out. When you find it, and it could be different per extension, type 10 (a command for nothing) and press [enter].
7. Press the backward button as you will be taken to the next buttons command. Notice the command for that button is now set to 10. Simply set it back to 29, enter 29 and press [enter], to complete the fix.
8. logout