User Guide
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-891MET-LINE (MET Line)
10
MET Circuit and Conference Circuit Test (#57)
The MET Circuit Test checks the amount of reflection from the MET loop around
circuitry and a Conference Test. The Tone-Clock circuit pack places a 1004-Hz
tone on a time slot that the port circuit is listening on. A General Purpose Tone
Detector (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, and 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 to 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 above.
0NO
BOARD
The test could not relate the internal ID to the port (no
board). This could be due to incorrect translations, no
board is inserted, an incorrect board is inserted, or an
insane board is inserted.
1. Check to ensure that the board translations are
correct. Use the list config command, and resolve
any problems that are found.
2. If the board was found to be correctly inserted in
step 1, issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board long command. This should
re-establish the linkage between the internal ID and
the port. If this is not the case, check to ensure that
there is a valid board inserted.
Table 10-254. TEST #56 MET Electronic Power Feed Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page