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Maintenance Objects
1402
Issue 5 October 2002
TSI Looparound Test (#1108)
This test is non-destructive. During this test, the MMI’s Time Slot Interchanger
(TSI) is listens to a TDM timeslot. A digital count tone loops back in the TSI and
onto another TDM timeslot without passing through any resource hardware. A
tone detector port verifies the looped data. If the digital count is correct, then the
test passes. The test is done for both TDM buses. Failures indicate that the TSI is
unreliable.
Table 366. TEST #1108 TSI Looparound Test
Error
Code Test
Result Description/Recommendation
ABORT Internal system error. This is an abnormal abort.
1. Retry the command at 1-minute intervals a maximum of 5 times.
1002 ABORT The system could not allocate time slots for the test. Either the traffic load on the
system is very high or time slots is out-of-service due to TDM-BUS errors. Refer
to
‘‘TDM-BUS (TDM Bus)’’ to diagnose any active TDM Bus errors.
1. If the system has no TDM-BUS errors and is not handling heavy traffic,
repeat the test at 1-minute intervals a maximum of 5 times.
1003 ABORT The system could not allocate a tone detector for the test. The system may be
oversized for the number of Tone Detectors present, or some Tone Detectors
may be out-of-service.
1. Resolve any ‘‘TTR-LEV (TTR Level)’’ errors in the Error Log.
2. Resolve any ‘‘TONE-PT (Tone Generator)’’ errors in the Error Log.
3. If neither condition exists, retry the test at 1-minute intervals a maximum of 5
times.
2000 ABORT Response to the test was not received from the Tone Detector circuit pack within
the allowable time period.
1. If this result occurs repeatedly, attempt to reset the circuit pack (if the other
ports are not in use). Reset the circuit pack by issuing the busyout board
PCSSpp and the reset board PCSSpp commands followed by the release
board PCSS command.
2. If this result occurs again, replace the circuit pack.
2012 ABORT Internal system error. This is an abnormal abort.
2100 ABORT Could not allocate the necessary resources to run this test. This is an abnormal
abort.
1. Retry the command at 1-minute intervals a maximum of 5 times.
FAIL The TSI was found to be transmitting in error, causing noisy and unreliable
connections.
1. Replace the circuit pack.
PASS The TSI is correctly using its allocated time slots.
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