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MEDPROPT (TN802/TN2302 MED PRO DSP PORT)
Issue 5 October 2002
1391
555-233-119
TDM NIC Looparound Test (#1380)
This test is non-destructive
This test sets up a loopback path from the TDM bus out to the NIC edge of the
Media Processor and back to the TDM bus. The loopback is established by
setting up the outbound IP connection to send IP packets to the MedPro’s own IP
address. The tone generator places a test tone (440Hz) onto a timeslot. The
timeslot is listened to by the Media Processor board. The tone is routed through
the TAP802/2302 DSP farm, where it may undergo transcoding to G.723, etc. The
tone is looped back at the Network interface and back through the TAP802/2302
where it is converted back into standard PCM. The tone is placed onto a TDM
timeslot and detected by a tone detector port. The test passes if 440Hz is reported
by the tone detector
Table 361. TDM NIC Looparound Test (#1380)
Error
Code Test
Result
Description/ Recommendation
1002 ABORT The system could not allocate timeslots for the test. The system may
be under heavy traffic conditions or it may have timeslots out of
service due to TDM-BUS errors.
1. If system has no TDM-BUS errors and is not handling heavy
traffic, retry the command at 1-minute intervals a maximum of 3
times.
2. If system has TDM-BUS errors, clear any errors, and retry the
command at 1-minute intervals a maximum of 3 times.
3. If the command continues to abort, escalate the problem.
1003 ABORT The system could not allocate a tone receiver 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. Even if there are no TTR-LEV
errors, there may not be a Tone Detector available on the network
that contains the circuit pack being tested. Verify that there is at
least one Tone Detector on this network. This does not harm the
system.
2. Resolve any TONE-PT errors.
3. If neither condition exists, retry the command at 1-minute intervals
a maximum of 3 times.
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