AT&T MERLIN LEGEND Installation & Maintenance Manual page 482

Maintenance and Troubleshooting
Alarms can be cleared
automatically by the system when the error condition no
longer exists
manually by the user
by replacing a module
by clearing an error log entry via the Drop button on an
MLX-20L telephone or via ALT-P on a PC
Restarts
Depending on the severity and duration of a problem, it maybe
necessary to restart the system either by a warm start, cold start,
or frigid start. Certain errors can cause the system to
automatically restart; cold starts and frigid starts can be initiated
by the maintenance technician.
Frigid start. All calls are dropped, and the system
configuration information is erased. All system memory must
be reinitialized, including customer translations. The entire
system must be rebooted.
Note: After a frigid start, the default printer is the PC printer,
not the SMDR printer. If you want printouts on-site from the
SMDR printer, make sure you change the option.
Cold start. A power interrupt of more than one second
causes a cold start. All calls are dropped, but customer
translations are saved.
Notes:
A cold start does not blank out the screen on an MLX-28D
telephone until the end of the cold start.
A cold start can cause stations with the Extension
Status feature to lose their toll restrictions.
5-4 Maintenance