Nortel Circuit Card, Installation Manual, Page: 241 / 908

NT5D11 and NT5D14 Lineside T1 Interface cards Page 241 of 906
Circuit Card Description and Installation
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
will appear:
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.
Testing
The Test Carrier (T C) command set enables tests to be run on the lineside T1
card, the T1 link, or the CPE device. These three tests provide the capability
to isolate faulty conditions in any one of these three sources. See Table 91 on
page 242 for additional information on these three test types.
After entering the T C command set, select which test to start. The prompt
appears, 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 Errore
d Bursty Unavaila
ble Loss
Frame Frame
Slip Error
Endin
g Second
s Second
s Seconds Seconds Seconds Counte
r
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