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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1557UDS1-BD (UDS1 Interface Circuit Pack)
10
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 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 120A1 CSU
Module is physically connected to a TN464F board
on the back of 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 120A1
CSU Module is physically connected to a TN464F
board on the back of 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.
Table 10-460. TEST #138 Loss of Signal Alarm Inquiry Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page