User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1577UDS1-BD (UDS1 Interface Circuit Pack)
10
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.
5. If the test still fails, then escalate the problem.
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.
6. If the test still fails, then escalate the problem.
Table 10-463. TEST #141 Yellow Alarm Inquiry Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page