Man-Machine T1 maintenance interface software 249
Seconds Seconds Seconds Seconds
Seconds Counter
2263 0 2263 2263 352 321
Each column, except the error counter, indicates the number of errors in
the current hour and is reset to zero every hour on the hour. When these
counters are reset to zero, the performance counter valuesare put into the
history log. The error counter indicates the number of errors that occurred
since the error counter was cleared.
Display History
Enter the Display History (D H) command set to display performance
counters for each hour for the past 24 hours. A screen similar to the
following appears:
LTI T1 Interface History Performance Log
3/03/95 1:35
Hour Errored Bursty Unavailable Loss
Frame Error
Frame Slip
Ending Seconds Seconds Seconds Seconds
Seconds Counter
20:00 139 0 129 139
23 162
19.00 0 0 0 0 0 0
18.00 0 0 0 0 0 0
17.00 0 0 0 0 0 0
16.00 0 0 0 0 0 0
Use the pause command to display a full screen at a time by entering D H P.
Clear Error
Reset the error counter to zero by entering the Clear Error (C E) command
set. The error counter provides a convenient way to determine if the T1
link is performing without errors since it can be cleared and examined at
any time.
The MMI monitors the performance of the T1 link according to several
performance criteria including errored, bursty, unavailable,loss of frame
and frame slip seconds. It registers the performance of these criteria by
reading their status every second and counting their results. These counts
are accumulated for an hour,and then they are reset to 0. Previous hour
count results are maintained for eachhour for the previous 24 hours.
Performance counts are maintained forthe following:
•Errored seconds – one or more CRC-6 errors, or one or more out of
frame errors in a second
•Bursty seconds – more than one and less than 320 CRC-6 errors in a
second
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.