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Maintenance Object Repair Procedures
555-233-123 10-1764 Issue 4 May 2002
Loop Around and Conference Circuit Test (#33)
This test checks the reflective loop around, and conference capabilities of a tie
trunk port circuit. The test uses 404-Hz, 1004-Hz, and 2804-Hz tones. This is an
on-board test only, and each tone is transmitted through the loop and checked
upon return.
This test may fail due to noise induced by adjacent electric power lines.
Customers having this problem should resolve it with their local power company.
To temporarily alleviate the alarm caused by the failure of this test, the test may be
disabled from the trunk administration Test field.
PASS The port is correctly using its allocated time slots.
User-reported troubles on this port should be investigated
using other port tests and examining station, trunk or external
wiring.
0 NO
BOARD The test could not relate the internal ID to the port (no board).
1. Check to ensure that the board translations are correct.
Translate the board, if necessary.
2. Issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board command. This should re-establish
the linkage between the internal ID and the port.
Table 10-648. TEST #33 Loop Around and Conference Circuit Test
Error
Code Test
Result Description/Recommendation
ABORT Could not allocate the necessary system resources to run this
test. This could be due to a failure to seize the port.
1. Retry the command at 1-minute intervals a maximum of 5
times.
7 ABORT The conference circuit test was aborted.
1. Retry the command at 1-minute intervals a maximum of 5
times.
Continued on next page
Table 10-647. TEST #6 NPE Crosstalk Test — Continued
Error
Code Test
Result Description/Recommendation
Continued on next page