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OPS-LINE (DS1 OPS Line)
Issue 4 May 2002 10-1171 555-233-123
Conference Circuit Test (#7)
One or more NPEs reside on each circuit pack with a TDM Bus interface. The
NPE controls port connectivity and gain, and provides conferencing functions on a
per-port basis. The Conference Circuit Test verifies that the NPE channel for the
port being tested can correctly perform the conferencing function. The NPE is
instructed to listen to several different tones and conference the tones together.
The resulting signal is then measured by a Tone Detector port. If the level of the
tone is within a certain range, the test passes.
Any FAIL The test failed. This can be due to on-board or off-board
problems. Off-board problems of concern include EXP-INTF
faults, TDM-BUS faults, and faults associated with the tone
detectors/tone generators. Clear all off-board problems before
replacing the board. Keep in mind that a TDM-BUS problem is
usually the result of a faulty board connected to the backplane or
bent pins on the backplane.
1. Look for TONE-BD and/or TONE-PT errors in the error log.
If present, refer to the TONE-BD Maintenance
documentation and to the TONE-PT Maintenance
documentation.
2. Retest when the faults from step 1 are cleared.
PASS The port is correctly using its allocated time slots. User-reported
troubles on this port should be investigated using other port tests
and by examining station, trunk, or external wiring.
0 NO
BOARD The test could not relate the internal ID to the port (no board).
This could be due to incorrect translations, no board is inserted,
an incorrect board is inserted, or an insane board is inserted.
1. Check to ensure that the board translations are correct. Use
the list config command, and resolve any problems that
are found.
2. If the board was found to be correctly inserted in step 1,
issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board long command. This should
re-establish the linkage between the internal ID and the
port. If this is not the case, dispatch to check to ensure that
there is a valid board inserted.
Table 10-441. TEST #6 NPE Crosstalk Test — Continued
Error
Code Test
Result Description/Recommendation
Continued on next page