
Chapter 10 Testing, Troubleshooting, and Diagnostics 453
Business Communications Manager - Management User Guide
5 Double click the 15 min intervals heading to display statistics for 15 minute intervals in the
last 24 hours, numbered from the most recent (01) to the oldest (96). Click the most recent
interval. The window shows the start time of the interval.
6 Click the 24-hour summary heading for an overall summary of the previous 24 hours.
The Number of intervals, Errored Seconds, Severely Errored Seconds, Unavailable
Seconds appear in the summary.
Check the CSU alarms
1 Choose Diagnostics, Trunk Modules.
2 Choose a bus and then choose a module.
3 Choose CSU Statistics, Alarm statistics and click the Active alarms heading.
The display shows all the active alarms of the types LOS (loss of signal), OOF (out of
Frame), RAI (Remote alarm indicator) or AIS (Alarm indication signal). For more
information on these types of transmission defects, refer to “Statistics collected by the
Business Communications Manager system” on page 451.
Check carrier failure alarms
1 Choose Diagnostics, Trunk Modules.
2 Choose a bus and then choose a module.
3 Choose CSU Statistics, Alarm statistics, CFA alarms.
The display shows LOS (loss of signal), OOF (out of Frame), AIS (Alarm indication signal),
RAI (Remote alarm indicator), Short-term alarms and Defects. For more information on these
types of transmission defects, refer to “Statistics collected by the Business Communications
Manager system” on page 451.
4 Choose the type of alarm you wish to view. For example, LOS (Loss Of Signal).
5 Click the Period #.
The display shows the Start time of the period.
Check bipolar violations
1 Choose Diagnostics, Trunk Modules.
2 Choose a bus and then choose a module.
3 Choose CSU Statistics and click the Alarm statistics heading.
The display shows the number of bipolar violations that occurred in the last minute.
Check short term alarms
1 Choose Diagnostics, Trunk Modules.
2 Choose a bus and then choose a module.
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