Nortel Networks 553-3001-211 manual Display Performance, LTI T1

Page 228 of 894 NT5D11 and NT5D14 Lineside T1 Interface cards

•Loss of frame seconds – loss of frame or loss of signal for three consecutive seconds.

•Framer slip seconds – one ore more frame slips in a second.

The MMI also maintains an overall error counter that is a sum of all the errors counted for the five performance criteria listed above. The error counter can only be cleared by entering the “Clear Error” 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.

Display the reports on these performance counters by entering the Display Performance (D P) or the Display History (D H) command sets into the MMI.

Display Performance

Enter the Display Performance (D P) command set to display performance counters for the past hour. A screen similar to the following will appear:

	LTI T1	Interface Performance Log
		3/03/95	1:37
Data for the past 37 Minutes
Errored	Bursty	Unavaila	Loss	Frame	Error
		ble	Frame	Slip
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.

553-3001-211 Standard 2.00 September 2004