Demand test descriptions and error codes - Avaya Support

Table 335: Internal Looparound Test (#135) 3 of 3
Error
Code
Test
Result
FAIL
0 NO
BOARD
Description / Recommendation
Internal Looparound Test (#135)
DS1-BD: DS1 Interface circuit pack failed the Internal Looparound test.
1. Retry the command at 1-minute intervals up to 5 times.
2. If the DS1 Interface circuit pack is a TN767, enter list measurement ds1-log
location to read the error seconds measurement. Otherwise, skip this step.
3. Verify that both of the DS1 link’s endpoints are administered with the same signaling
mode, framing mode, and line coding.
4. Check the physical connectivity of DS1 Interface circuit packs and cable.
5. Contact T1 Network Service to diagnose remote DS1 endpoint.
6. If Steps 2 to 5 are OK and the problem recurs, escalate the problem.
UDS1-BD: The UDS1 Interface circuit pack failed the Internal Looparound test.
If the UDS1 connects to a T1 network facility or another switch:
1. Retry reset board location at 1-minute intervals up to 5 times.
2. Enter list measurement ds1-log location to read the error seconds
measurement.
3. Verify that both endpoints of the DS1 link are administered using the same signaling
mode, framing mode, and line coding.
4. Check the physical connectivity of DS1 Interface circuit packs and cable.
5. Contact T1 Network Service to diagnose the remote DS1 endpoint.
6. 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. Retry reset board location at 1-minute intervals up to 5 times.
2. Enter list measurement ds1-log location to read the error seconds
measurement.
3. Verify that the switch DS1 and the line-side terminating device are administered
using the same signaling mode, framing mode, and line coding.
4. Investigate the maintenance status of the line-side terminating device. Obtain the
error seconds measurement on the terminating device (if possible). Refer to the
line-side terminating device operating manual for information.
5. 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 the error seconds measurement is severe, investigate
premise distribution system wiring for noise and distance limitation.
6. Replace the local UDS1 Interface circuit pack, and repeat the test.
7. Contact the vendor of the line-side terminating device to diagnose the equipment.
PASS The Internal Looparound test passed on every administered trunk.
1. Enter release board location to put the trunks in the in-service state.
See NO BOARD for the repair procedures.
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Issue 5 May 2009 1233