Nortel DMS-100 Series Reference Manual page 55

Table 5-2xxx
LED labels
LED label
Critical System
Major System
Minor System
Major Other System
Minor Other System
Power Dist. Center
ABS
Office Alarm Unit
Critical Power Plant
Major Power Plant
Minor Power Plant
Power Dist. Center
Night Alarm Transfer
Alarm Grouping
Alarm Transfer
CA Volume Reduced
On the NT0X63LB panel a resettable fuse will open if there is an electrical
short circuit. To restore operation to the panel, disconnect the C00 cable for
30 seconds. If the panel does not return to service, contact your next level of
support.
For a detailed description of the NT0X63LA and NT0X63LB panels, see
Hardware Description Manual.
The NT0X63MA (see Figure 5-3), provides the exit alarm and the central
alarm display functions that are associated with MDF connections in earlier
alarm system versions. You use the NT0X63MB (see Figure 5-4) to
deactivate the audible alarms panels.
DMS-100 Family Alarm System Description Reference Manual BASE12
Explanation
Critical DMS failure
Major DMS failure
Minor DMS failure
Major non-DMS failure
Minor non-DMS failure
Alarm battery supply failure at PDC
NT3X82 in OAU failed because of a card, shelf, or
power failure
Critical failure in the power plant
Major failure in the power plant
Minor failure in the power plant
Critical failure at the power distribution center
Night alarm transfer activated by operation of switch
on ACD panel
Alarm grouping activated by operation of switch on
ACD panel
Alarm trnsfer activated by operation of switch on
ACD panel
Critical alarm buzzer volume reduced by operation of
switch on ACD panel
Low Power Alarm system 5-7