Pm Star Critical - Nortel DMS-100 Series Maintenance Manual

11-16 Star Remote System alarm clearing procedures
PM STAR
critical
Alarm display
CM
.
Indication
Use this procedure to recover service in a STAR when both units of the STAR
are out of service. This condition always produces a central side busy (CBsy)
alarm.
The STAR alarm appears under the PM header in the MAP display. This alarm
indicates an alarm condition exists in the STAR. The n indicates the number
of STARs with alarms. The *C* appearing under the alarm indicates the alarm
class is critical.
Meaning
The STAR is either system busy (SysB) or C-side busy (CBsy). A STAR is
SysB if both units are SysB or if one unit is SysB and the other unit is manual
busy (ManB). A STAR is CBsy when both units of the STAR are CBsy. When
both units of the STAR are SysB, this may indicate that both main power
converters in slots 3 and 23 have failed.
Impact
When a STAR is in the SysB or CBsy state, a loss of call processing with a
critical alarm indication will result.
Common procedures
None
Action
The following flowchart is a summary of the procedure. Use the instructions
in the step-action procedure that follows the flowchart to clear the alarm.
Note: The numbers represented in the flowchart do not coincide with the
step-action numbers. Instead, the numbers indicate navigation within the
flowchart.
297-8353-550 Standard 05.01 March 2001
MS IOD Net
. . .
PM CCS Lns
nSTAR . .
*C*
Trks Ext Appl
. . .