Nortel Circuit Card 311 Reference page 251

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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
three test types.
After entering the T C command set, select which test to start. The prompt
appears, similar to the following:
Test 1:
Test 2:
Test 3:
(1,2,3 or S to cancel):
Tests can be performed once (for 1 through 98 minutes), or continuously
(selected by entering 99 minutes) until a "Stop Test" command is entered.
Tests continue for the duration specified even if a failure occurs, and
terminate at the end of the time period or when a "Stop Test" command is
issued. Only a "Stop Test" command stops a test with a duration selection
of 99. After entering the test number selection, a prompt similar to the
following appears:
Enter Duration of Test (1-98 Mins, 0 = Once, 99 = Forever)
Verify DS-30A Links are disabled.
Hit Q to quit or any Key to Continue
Before a test is run, verify that DS-30A links are disabled because the tests
interfere with calls currently in process.
Copyright © 2003-2008, Nortel Networks
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Table 109 "MMI Tests" (page 252)
Local Loopback Test
External Loopback Test
Network Loopback Test
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Man-Machine T1 maintenance interface software 251
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