Subscriber Lines Manual Maintenance; Drawer Maintenance - Nortel DMS-100 Series Maintenance Manual

Alarm class codes, displays, and conditions
PM header display
PM
PM
nnSysB
*C*
PM
nnLCM
*C*
PM
nnSysB
M
PM
nnISTb
(blank)
PM
nnCBsy
(blank)
PM
nn ManB
(blank)
Note: If nn is greater than 99, two asterisks (**) are displayed instead of
numbers.

Subscriber lines manual maintenance

Subscriber lines that fail to meet certain quality standards are identified to
the switch operator by posting the failures at the line test position (LTP) or
by output reports generated by the ALT log subsystem, The automatic
maintenance failures thus identified are then manually tested and corrected.
For more information, refer to the Input/Output System Reference Manual,
297-1001-129.

Drawer maintenance

Drawer states can be monitored and changed from the LCM level of the
MAP display. Drawer tests can also be run by manually testing a unit at the
MAP display. When the system detects a faulty card, its drawer can be
removed from service for testing and for card replacement, without affecting
other call processing or LCM maintenance.
Condition
All PMs are in service. No alarm conditions are in
effect.
More than 10% of the PMs are SysB–critical alarm.
Both units of one or more LCMs are not in-service
critical alarm.
10% or fewer of the PMs are SysB major alarm.
The indicated number of PMs are ISTb.
The indicated number of PMs are CBsy.
The indicated number of PMs are ManB minor alarm.
DMS-100 Family Maintenance Manual ABSK007
Maintenance overview 1-71