Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-36
Module Problems
_____________________________________________________
* If any problem arises with the voice call on an NI-BRI module, run the NI-BRI
Provisioning Test next. While the BRI test is running, you can run the voice test on the
next module.
** Run the NI-BRI Provisioning Test on any NI-BRI module that is going to be used for data
calls or that had a problem with voice calls and was not previously tested with the tool.
Figure 4-6. Module Test Process
Check the equipment:
power supply
processor
(back up the system programming)
1
maintenance terminal
(use the PC when testing
MLX modules)
2
Check the error logs
3
Resolve any processor problems
4
Busy-out or reset the module
5
Run the Internal Loopback test
6
Check the error logs
7
Run the BchLoopback test
for MLX modules only
11
Replace the module if needed
9
Run the CSU Loopback test
for 100D modules only
10
Run the BRI Provisioning Test for
NI-BRI modules only
**
8
12
Restore the module
Record the errors on
the repair tag and
continue with the
next step.
errors
errors
errors
errors
Verify that voice calls can be made
on each BRI line
*