Avaya Definity SI Maintenance Manual page 1682

Maintenance Object Repair Procedures
Hybrid Circuit and Conference Circuit Test (#57)
This test checks the amount of reflection from the Hybrid loop around circuitry and
a Conference Test. Please be aware that if no station is connected to the port
being tested, the results of the test are not valid. The Tone-Clock circuit pack
places a 1004-Hz tone on a time slot that the port circuit is listening on. A GPTD is
connected to another time slot that the same port circuit is talking on. The
on-board microprocessor places the port in the loop around mode and the GPTD
measures the level of the reflected signal.
The Conference Test is performed after the Circuit Test. The Conference Circuit
Test verifies that the NPE is able to listen to several test tones and correctly
conference them together. The test is executed in two parts. The first half of the
test checks the operation of the NPE's first three conference channels. The NPE
is put in the loop around mode and instructed to talk on a selected time slot and
listen to the 1004-Hz tone using the first three Conference Channels. The signal
level and noise level of the conferenced output are then measured using a GPTD
and checked to verify that they are within an acceptable range.
The second half of the Conference Test checks the operation of the NPE's
remaining four Conference Channels and follows the same procedure as the
preceding paragraph.
Table 10-326. TEST #57 Hybrid Circuit and Conference Circuit Test
Error
Code
1000
10-896 Issue 4 May 2002
Test
Result
ABORT Could not allocate the necessary system resources to run this
test.
1. Retry the command at one-minute intervals a maximum of
5 times.
ABORT System resources required to run this test are not available.
The port may be busy with a valid call. Use display port
PCSSpp to determine the station extension number of the
port. Use status station to determine the service state of the
port. If the service state indicates that the port is in use, then
the port is unavailable for certain tests. (Refer to the "Status
Commands" section in Chapter 10, "Maintenance Commands
and Trouble-Clearing Aids" for a full description of all possible
states.) You must wait until the port is idle before retesting.
Attendants are always in use (off-hook) if the handset is
plugged in and the port is not busied out.
1. If the port status is idle, then retry the command at
one-minute intervals a maximum of 5 times.
Description/Recommendation
Continued on next page
555-233-123