Avaya S8700 Maintenance Manual page 95

MMI-BD
TSI Loop-Around Test (#1108)
This test is nondestructive.
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 8-340. Test #1108 TSI Loop-Around Test
Error Test
Code Result Description / Recommendation
ABORT Internal system error. This is an abnormal abort.
1. Retry the command at 1-minute intervals up to 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 are out-of-service due to TDM-BUS errors.
1. If the system has no TDM-BUS errors and is not handling heavy traffic,
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 errors.
2. Resolve any TONE-PT errors.
3. If neither condition exists, retry the test at 1-minute intervals up to 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
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 up to 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.
555-233-142
repeat the test at 1-minute intervals up to 5 times.
ports are idle). Reset the circuit pack by issuing the busyout board
UUCSSpp and the reset board UUCSSpp commands followed by the
release board UUCSSpp command.
Continued on next page
Issue 1 May 2002 8-791