Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 213

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
100D Module Problems
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.
Summary
Console Procedure
PC Procedure
Appropriate Modules
Time Estimate
EQ IN and EQ OUT
(551 T1 CSU)
Menu
no.
Type the slot no.
This test can be run only on 100D modules.
Approximately 2 minutes
For the 551 T1 CSU only, connect a patch cord
from the CSU EQ IN jack to the CSU EQ OUT jack.
Details are provided below.
Issue 1
August 1998
Page 4-101
Dial the slot