Nortel Networks Circuit Card 311 User Manual
Page 249
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 values are 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 each hour for the previous 24 hours.
Performance counts are maintained for the 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
23 May 2008
Copyright © 2003-2008, Nortel Networks
.