Trouble Isolation And Correction; Locating And Clearing Faults; Problem Condition Indicators - Nortel DMS-100 Series Maintenance Manual

Trouble isolation and correction

Locating and clearing faults

Problem condition indicators

Problem conditions can include the following:
Operational measurements
The OMs monitor and count events in the system. The OMs are the best
means for detecting both current and potential system troubles. The OM
thresholding feature monitors and reports key Subscriber Carrier Module
100–S (SMS) activity. The system makes these reports daily or weekly. The
reports are the primary method of problem detection.
Log reports
Logs are an analysis tool and provide detailed information on call errors,
diagnostic results, and system status. Logs indicate trouble conditions, when
the following conditions are present:
Alarms
Audible and visual alarms indicate that problem requires correction. Correct
routine system maintenance and use of OMs and logs minimize the
occurrence of alarms.
operational measurements (OM)
log reports
alarms
a sudden increase in the volume of logs
message not printed reports
a large number of logs that are the same.
DMS-100 Family SMS Maintenance Manual XPM10 and up
9-1