D Module Problems - Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140

100D Module Problems

Console Display/Instructions
If you need assistance in interpreting the information displayed on
the screen, contact your technical support organization.
100D Module Problems
The 100D module requires the CSU Loopback Test, in addition to the other
module tests. See
process. If you have any questions about the 100D module that this section
does not cover, contact your technical support organization.
Private Networked Systems
The Channel Service Unit (CSU) or Data Service Unit (DSU) at either end of a
PRI tandem trunk over which a call could be routed, may be programmed for T1
or robbed-bit signaling rather than PRI signaling. This will cause the MERLIN
LEGEND to raise a channel inoperative alarm. Verify that any CSU on the DS1
circuit between the MERLIN LEGEND and the public switched telephone
network (PSTN) is programmed for the same framing as is the DS1 slot on the
MERLIN LEGEND. Also, verify that any CSU on the PRI circuit between the
MERLIN LEGEND and the PSTN is programmed for PRI signaling and not for
T1 or robbed-bit signaling.
NOTE:
If your existing MERLIN LEGEND Communications system is now
going to be used for a private network using tandem trunks, check
the framing to be sure PRI signaling is supported.
-
Figure 4-35 for a diagram of the entire module testing
Additional Information
xx = slot number entered in Step 2.
Issue 1
August 1998
Page 4-100
PC