User's Manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi

555-233-119 Issue 1

April 2000

Maintenance Objects

3-529DIOD-DS1 (DS1 DIOD Trunk)

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