AT&T MERLIN LEGEND Installation & Maintenance Manual page 485

Maintenance and Troubleshooting
Once the equipment is out of service, you can select demand
tests. After testing is finished, choose "Restore" from the menu to
cancel "Busy-Out" or "Reset."
Note: A cold start or a warm start does not restore equipment
that has been busied-out or reset.
On-Site Maintenance
You can do on-site maintenance with an MLX-20L telephone or a
PC with SPM software. The MLX-20L plugs into whichever of the
first five jacks on the first MLX module is being used as the
system programming/maintenance port. (The default is the first
MLX jack.) Only one jack at a time can be used for system
programming or maintenance. The PC plugs into the RS-232
system programming/maintenance port.
Remote Maintenance
By using a PC with System Programming and Maintenance
(SPM) software, the maintenance technician and personnel from
the National Service Assistance Center (NSAC) and the National
Technical Service Center (NTSC), or an authorized AT&T
representative, can remotely access the maintenance program.
This remote access is provided by a built-in 1200-bps modem in
the processor module.
Note: Line noise can distort the SPM screen. When this
happens, the remote administrator should hang up and redial.
Once in the maintenance program, the remote administrator can
use the menu screens as the on-site technician does to check
error logs, check system status, and even cause restarts.
Maintenance 5-7