Nortel NT1R20 Description page 209

Figure 46
Display Performance (D P) screen
Data for the past 37 Minutes
Errored
Seconds
2263
NT5D33 and NTRB34 Line-side E1 Interface Cards
The MMI also maintains an overall error counter which is the sum of all
errors counted for the performance criteria listed above. The error counter can
only be cleared by entering the Clear Error (C E) command. It will
stop counting at 65,000. The error counter provides an easy method to
determine if an alarm condition has been corrected. Simply clear the error
counter, wait a few minutes, and display performance to see if any errors have
occurred since the counter was cleared.
The MMI display reports on these performance counters through the
Display Performance (D P) or the Display History (D H)
commands.
Display Performance
Entering the Display Performance (D P) command will display
performance counters for the past hour. A screen similar to Figure 46 will
appear:
LEI E1 Interface Performance Log
Bursty Unavailable
Seconds Seconds
0 2263
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. Just before the
performance counters are reset to zero, the values are put into the history log.
The error counter indicates the number of errors since the error counter was
cleared.
The Pause command can be used to display a full screen at a time, by entering
D P P. If there is more than one screen to be displayed, the MMI will scroll
the until the screen is full and will stop. When you are ready to see the next
screen, simply press any key. The display will show one more screen and
stop, again. This will continue until the entire display has been shown.
3/03/95 1:37 PM
Loss Frame Frame Slip
Seconds Seconds
2263 352
Page 185 of 290
Error
Counter
321
Line cards Description