Nortel DMS-100 Series Maintenance Manual page 378

9-14 Trouble isolation and correction
The CM returns the unit to service. The CM can also download new static
data and run full diagnostics if necessary.
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—Soft parity fault data store, inactive unit OOS
The following is an example of a PM181 log:
PM181 JUL23
Node: ISTb, Unit 0 Act: InSv, Unit 1, Inact: OOS
Parity audit detected soft parity fault in data store
Other problem indicators include the following:
Action by the CM
In this example the inactive unit is not InSv. The CM cannot take the
defective unit OOS because this action busies the SMS. The SMS in the
BSY state cannot process calls. The CM sets the active unit as ISTb.
User action
If the inactive unit is OOS, the SMS drops all call processing when the user
busies the unit. Return the inactive unit to service to try to get the unit to
process calls. The user busies the active unit and returns the defective unit
to service. The user sends static data as part of the RTS.
PM181—Intermittent parity fault, both units INSV
The following is an example of a PM181 log:
PM181 JUL23
297-8231-550 Standard 09.01 August 1998
23:29:16 5561 INFO SMS 0 Unit 0
PM128—The SMS is set ISTb, with the active unit set at ISTb.
PM128 JUL23 23:29:16 5561 TBL
Node: ISTb, (Inact OOS) From InSv
Unit 1 Inact: ManB
PM189—The active unit of the SMS has a fault in program store.
PM189 JUL23 23:29:17 5561 INFO PM SW INFORMATION REPORT
SMS 0 Unit 0: Act
TASKID: 00370037 PARAUDT, TIME:
COMID: FF NILCID
TEXT: softdat 00 00 57 F6 00 00
> –The following ISTb is present: a soft parity fault was
>QUERYPM FLT
detected in data store of memory.
23:29:16 5561 INFO SMS 0 Unit 0
ISTb SMS 0
22:29:16.68