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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-529DIOD-DS1 (DS1 DIOD Trunk)
3
Conference Circuit Test (#7)
One or more Network Processing Elements (NPEs) reside on each circuit pack
with a TDM Bus interface. (The TN464 UDS1 circuit pack has one SCOTCH-NPE
chip instead of several NPE chips). 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.
2053 ABORT At least one of the following errors is found on the DS1 circuit pack:
1281—Loss of signal
1793—Blue Alarm
2049—Red Alarm
2305—Yellow Alarm
1537—Hyperactivity
Look for the above error types in the Hardware Error Log and follow the
procedures given in the appropriate DS1-BD or UDS1-BD maintenance
documentation for the listed error types.
FAIL The NPE of the tested port was found to be transmitting in error. This will
cause noisy and unreliable connections.
1. Replace the circuit pack.
PASS The port is correctly using its allocated time slots. User-reported troubles
on this port should be investigated using other port tests and examining
station, trunk, or external wiring.
Table 3-222. TEST #6 NPE Crosstalk Test — Continued
Error
Code
Te s t
Result Description/ Recommendation
Continued on next page