B-Channel Loopback Test - Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems
Module Problems
Restoring the Module
When you are finished running module tests, be sure to restore the module. See
''Restore'', earlier in this chapter.

B-Channel Loopback Test

This test verifies that specific communication paths on the MLX or 800 NI-BRI
modules are operational. If you have not read "Module Test Process" above, do
so.
Summary
Console Procedure
PC Procedures
Appropriate Modules
Time Estimate
Busy-Out or Reset
Interrupting the Test
Test Failure
Menu
Maintenance
no.
Enter BchLoopback
Type the slot no.
" 
This test can be run only on MLX or 800 NI-BRI
modules.
Approximately 1.5 minutes.
Before beginning the test, busy-out or reset the
module being tested. Both Busy-Out and Reset are in
the Slot menu, which you can access by doing the
following from the console:
Menu
Maintenance
See ''Busy-Out and
additional information.
Interrupt the test by selecting
If the test fails, record the errors on the repair tag and
replace the module.
Dial the slot
Slot

Slot
Reset'', earlier in this chapter, for
.
Exit
Issue 1
June 1997
Page 4-59