Nortel NT1R20, Description

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NT5D11 Line-side T1 Interface Card Page 123 of 290
Line cards Description
Display History
Entering the Display History (D H) command set will display performance
counters for each hour for the past 24 hours. A screen similar to the following
will appear:
The pause command can be used to display a full screen at a time by entering
D H P.
Clear Error
You can 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.
Testing
The Test Carrier (T C) command set allows you to run tests on the line-side
T1 card, the T1 link, or the CPE device. The three tests give you the capability
to isolate faulty conditions to any one of these three sources. See Table 30
for additional information on these three test types. After entering the T C
command set, you will be prompted to enter which of the three tests you wish
to initiate. The prompt will appear similar to the following:
Test 1: Local Loopback Test
Test 2: External Loopback Test
Test 3: Network Loopback Test
(1,2,3 or S to cancel):
LTI T1 Interface History Performance Log
3/03/95 1:35
Hour Errored Bursty Unavailable Loss Frame Frame Slip Error
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