Maintenance Object Repair Procedure
555-233-142
8-1242 Issue 1 May 2002
FAIL
(cont’d)
If the UDS1 connects to a line-side terminating device such as a PRI terminal
adapter:
1. Retry the reset board command at 1-minute intervals up to 5 times.
2. Enter the list measurement ds1-log UUCSS command 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 Every administered trunk or port of the UDS1 Interface circuit pack passes the
Internal Loop-Around test. The bit pattern consistency test is executed
successfully over the path that covers a DS1 port, cable, and the external
NCTE device.
Table 8-525. Test #135 Internal Loop-Around Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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