Maintenance Object Repair Procedure
555-233-142
8-1246 Issue 1 May 2002
FAIL UDS1 Interface circuit pack detects a Loss of Signal alarm. The physical link is
broken or the remote DS1 endpoint is down. Every trunk or port of this UDS1
interface circuit pack is out-of-service. If the UDS1 Interface circuit pack is
designated as the supplier of the system synchronization source, then the
system synchronization maintenance will adopt a source elsewhere. See
‘‘SYNC (Port-Network Synchronization)’’ on page 8-1034 for details. If the
UDS1 connects to a T1 network facility:
1. Check the physical connection of the UDS1 Interface circuit pack and the
cable. If a CSU module is physically connected to a UDS1-BD board
behind the port carrier, check the physical connection of the CSU module
and make sure the Network Interface cable is plugged into the CSU
module’s NETWORK jack.
2. If the UDS1 Interface circuit pack connects to a T1 facility, call the vendor
of the T1 carrier to diagnose the remote DS1 endpoint. If the UDS1
Interface circuit pack connects directly to a switch, call the system
technician of the remote switch to diagnose the DS1 endpoint.
If the UDS1 connects to a line-side terminating device such as a PRI terminal
adapter:
1. Check the physical connection of the UDS1 Interface circuit pack to the
terminating device. Check premise distribution system (or intra-premise
wiring) for physical connection failures. If a CSU module is physically
connected to a UDS1-BD board behind the port carrier, check the physical
connection of the CSU module and make sure the Network Interface cable
is plugged into the CSU module’s NETWORK jack.
2. Contact the vendor of the line-side terminating device to diagnose the
equipment.
1300 FAIL The CSU module is missing.
The CSU module is missing: The
Near-End CSU Type field on the add
ds1 form has been administered as
integrated but the 120A1 CSU module
is not physically connected to the UDS1 board behind the port carrier.
1. If using the 120A1 CSU module, plug the CSU module into the UDS1
circuit pack’s connector on the I/O connector panel on back of the carrier.
Otherwise, change the Near-End CSU Type field using the change
ds1 form to
other.
2. Run the test again.
Table 8-526. Test #138 Loss of Signal Alarm Inquiry Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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