UDS1-BD (UDS1 Interface Circuit Pack)
Issue 1 May 2002
8-1743555-233-143
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 8-1509 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 or a Sync Splitter is physically connected to a
UDS1-BD board behind the port carrier, check the physical connection of
the CSU module/Sync Splitter and make sure the Network Interface cable
is plugged into the CSU module’s/Sync Splitter’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 or Sync Splitter is
physically connected to a UDS1-BD board behind the port carrier, check
the physical connection of the CSU module/Sync Splitter and make sure
the Network Interface cable is plugged into the CSU module’s/Sync
Splitter’s NETWORK jack.
2. Contact the vendor of the line-side terminating device to diagnose the
equipment.
Table 8-673. Test #138 Loss of Signal Alarm Inquiry Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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