Pm Lcm Critical - Nortel DMS-100 Series Maintenance Manual

5-2 5-2 RLCM-EDC alarm clearing procedures
PM LCM
critical
Alarm display
CM
.
Indication
Use this procedure to recover service in an RLCM-EDC when both units of
the line concentrating module (LCM) are out of service. This condition
always produces a central side busy (CBsy) alarm.
The LCM alarm appears under the PM header in the MAP subsystem
display. This alarm indicates an alarm condition in the RLCM-EDC. The n
indicates the number of RLCM-EDCs with alarms. The *C* that appears
under the alarm indicates a critical alarm.
Meaning
The LCM is system busy (SysB) or C-side busy (CBsy). An LCM is SysB if
both units are SysB or if one unit is SysB and the other unit is manual busy
(ManB). An LCM is CBsy when both units of the LCM are CBsy.
Result
Call processing ceases with a critical alarm indication when an LCM is SysB
or CBsy.
Common procedures
There are no common procedures.
Action
This procedure contains a summary flowchart. Use the flowchart to review
the procedure. Follow the steps to perform the procedure.
Note: The numbers in the flowchart do not coincide with the step-action
numbers. The numbers indicate where to go in the flowchart.
297-8381-550 Standard 02.02 April 1999
5-2
MS IOD Net
. . .
PM CCS Lns
nLCM . .
*C*
Trks Ext Appl
. . .