Nortel DMS-100 Series Maintenance Manual page 379

Node: ISTb, Unit 0 Act:
Parity audit detected intermittent parity fault.
Other problem indicators include the following:
PM128—The SMS is set ISTb, with the inactive unit as OOS.
PM128 JUL23 23:29:16 5561 TBL ISTb SMS 0
Node: ISTb, (Inact OOS) From InSv
Unit 0 Inact:
Unit 1 Act: InSv
PM189—The inactive unit of the SMS has a parity fault at intervals.
PM189 JUL23 23:29:17 5561 INFO PM SW INFORMATION REPORT
SMS 0 Unit 0:
TASKID: 00370037 PARAUDT, TIME:
COMID: FF NILCID
TEXT: intflt 00 00 57 F6 00 00
>
>QUERYPM FLT
in program store or data store of memory.
The SysB means that the CM takes the inactive unit OOS. The SysB also
means that the CM performed a SWACT on the SMS and set the new
inactive unit OOS.
Action by the CM
The CM sets the inactive unit as SysB. If the defective unit was the active
unit, the CM performs a SWACT and busies the new inactive unit. The CM
tries to recover the BSY unit without operating company personnel
intervention. The CM returns the unit to service and makes sure that full
unit diagnostics are run.
User action
The CM brings the unit back to service and interruption is required if the
SMS does not RTS. The user checks for other problem indicators that can
mean the CM cannot return the defective unit to service.
PM181—Intermittent parity fault, inactive unit OOS
The following is an example of a PM181 log:
PM181 JUL23 23:29:16 5561 INFO SMS 0 Unit 0
Node: ISTb, Unit 0 Act:
Parity audit detected intermittent parity fault
Other problem indicators include the following:
PM128—The SMS is set ISTb, with the active unit as ISTb.
PM128 JUL23 23:29:16 5561 TBL
InSv, Unit 1, Inact:
SysB (Parity errors detected) from InSv
Inact
–SysB reason: an intermittent parity fault was detected
InSv, Unit 1, Inact:
DMS-100 Family SMS Maintenance Manual XPM10 and up
Trouble isolation and correction 9-15
InSv
22:29:16.68
OOS
ISTb SMS 0