UDS1-BD (UDS1 Interface Circuit Pack)
Issue 5 October 2002
1789
555-233-119
FAIL
UDS1 Interface circuit pack detects a Loss of Signal alarm. The physical link
is broken or the remote DS1 endpoint is down. All trunks or ports of this
UDS1 interface circuit pack are 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.
Refer to the
‘‘SYNC (Synchronization)’’
section in this chapter 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 on the back of 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 on the back of 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 530.
TEST #138 Loss of Signal Alarm Inquiry Test —
Continued
Error
Code
Test
Result
Description/ Recommendation
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