Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-103
100D Module Problems
If you need assistance in interpreting the information displayed on
the screen, contact your technical support.
100D Module Problems
The 100D module requires the CSU Loopback Test, in addition to the other
module tests. See Figure 4-6
for a diagram of the entire module testing process.
If you have any questions about the 100D module that this section does not
cover, contact your technical support organization.
Error Events
In addition to checking the error logs, the 100D module requires that you check
the error events specific to the 100D module. See ‘‘
Error Events’’, later in this
chapter, for details.
CSU Loopback Test
The Channel Service Unit (CSU) Loopback Test verifies that the communication
path between the following CSUs, 551 T1, ESF T1, or the ACCULINK

3150,
and the 100D module is operational.
Restore Clock
displayed only for the
CSU-lpbk Upgrade
800 NI-BRI module.
Exit Provision-
ing
Clock Slot xx :
xx = slot number entered in Step 2.
mm/dd/yy hh:00-hh:mm
Active:
xxxx
Synch:
xxxxx
Source:
xxxx
Port:
xx
Exit