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UDS1-BD (UDS1 Interface Circuit Pack)
Issue 1 June 2005 2429
2 FAIL The UDS1 interface circuit pack is reporting a Yellow F5 fault alarm. There
is a fault in the User-Network interface from the user (PBX) to the network.
An out-of-frame condition occurs on the remote DS1 endpoint.
If the UDS1 connects to a T1 network facility:
1. Verify that both endpoints of the DS1 link are administered using the
same signaling mode, framing mode, and line coding.
2. Contact T1 Network Service to diagnose the remote DS1 endpoint.
3. Check the physical connectivity of the DS1 Interface circuit packs and
cable.
4. Replace the local UDS1 Interface circuit pack and repeat the test.
If the UDS1 connects to a line-side terminating device such as a PRI
terminal adapter:
1. Verify that the switch DS1 and the line-side terminating device are
administered using the same signaling mode, framing mode, and line
coding.
2. Investigate the maintenance status of the line-side terminating
device. Refer to the 'Line-Side Terminating Device Operating Manual'
for information.
3. Contact the vendor of the line-side terminating device to diagnose the
equipment.
4. 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.
5. Replace the local UDS1 Interface circuit pack and repeat the test.
PASS Neither a Yellow alarm nor a Remote Multiframe Alarm nor a F5 state
alarm is being received from the remote DS1 endpoint.
Table 861: Test #141 Yellow Alarm Inquiry Test (continued)
Error
Code
Test
Result
Description / Recommendation
4 of 5