Avaya 03-300430 User Manual

The Conference Circuit test verifies that the NPE channel for the port being tested can correctly 
perform the conferencing function.  Test #47 also tests the operation of the port conference 
circuits in the NPE for three and four parties.  In addition, a test is run to measure noise.  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.
The noise test is performed by filtering out the tone, and then measuring inherent port noise.

Note:

This looparound test is sensitive to the length of the loop, the equipment in the 
loop, or the equipment terminating the loop, such as off-premises stations. If this 
test is causing a false alarm, use change station for this station and change 

the Tests field to n, to disable the test.

ABRT

Could not allocate the necessary system resources to run this test.

1. Retry the command at 1-minute intervals up to 5 times.

 1 of 5

TDM BUS

BFC: Battery Feed Chip
NPE: Network Processing Element

Analog
Line
Port

BFC

CODEC

NPE 

Tone

Generator

Tone

Detector