Avaya Nortel Communication Server 1000 Reference page 188

NT5D11 and NT5D14 Lineside T1 Interface cards
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.
During a test, if an invalid word is received, a failure peg counter is incremented. The peg
counter saturates at 65,000 counts. At the end of the test, the Test Results message indicates
how many failures, if any, occurred during the test.
Table 82: MMI Tests
Table 82: MMI Tests
Test number
Test 1, local loopback, loops the T1 link signaling toward itself at the backplane connector, and
test data is generated and received on all timeslots. If this test fails, it indicates that the Lineside
T1 card is defective.
signaling is looped back toward itself.
Figure 36: MMI local loopback test
Test 2, external loopback, assumes an external loopback is applied to the T1 link. Test data is
generated and received by the Lineside T1 card on all timeslots. If test 1 passes but test 2
fails, it indicates that the T1 link is defective between the Lineside T1 card and the external
loopback location. If test 1 was not run and test 2 fails, the T1 link or the Lineside T1 card could
be defective. To isolate the failure to the T1 link, tests 1 and 2 must be run in tandem.
37: MMI external loopback test
to the T1 link.
188 Circuit Card Reference
on page 188 shows which test to run for the associated equipment.
Equipment tested
1 Lineside T1 card
2 T1 link, Lineside T1 card and
T1 network
3 CPE device and T1 network
Figure 36: MMI local loopback test
on page 189 demonstrates how an external loopback is applied
Comments? infodev@avaya.com
Test description
Local loopback
External loopback
Network loopback
on page 188 demonstrates how the
Figure
July 2011