ISDN-TRK (DS1 ISDN Trunk)
Issue 1 May 2002
8-999555-233-143
Conference Circuit Test (#7)
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.
NOTE:
The TN464C/D UDS1 circuit pack has one SCOTCH-NPE chip instead of
several NPE chips.
1018 ABORT Maintenance is disable on this trunk.
1. Enable maintenance by entering ‘‘y’’ in the ‘‘Maintenance Tests?’’ field on
page 2 of the change trunk-group form.
1117 ABORT A service state audit message is outstanding.
1. Wait 2 minutes and then try again.
2000 ABORT Response to the test was not received within the allowable time period.
1. Retry the command at 1-minute intervals up to 5 times.
2020 ABORT The test did not run due to an already existing error on the specific port or a
more general circuit pack error.
1. Examine Error Log for existing errors against this port or the circuit pack
and attempt to diagnose the already existing error.
2100 ABORT Could not allocate the necessary system resources to run this test.
1. Retry the command at 1-minute intervals up to 5 times.
Any FAIL The NPE of the tested port was found to be transmitting in error. This will
cause noisy and unreliable connections. The ISDN-TRK is moved to
out-of-service/near-end state.
1. Replace the circuit pack.
PASS The port is able to communicate over the TDM Bus.
Table 8-394. Test #6 NPE Crosstalk Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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