Avaya Definity SI Maintenance Manual page 1215

CO-DS1 (DS1 CO Trunk)
Table 10-160. TEST #7 Conference Circuit Test — Continued
Error
Code
Any
555-233-123
Test
Result
FAIL 1. Enter the list configuration board PCSS command. If
the circuit pack is a TN767B vintage 8 or 9, replace the
circuit pack with a TN767C V3 or later.The error log may
have error type 1281 entries.
2. Test all administered trunks on the board. If one fails, this
could be an off-board problem (such as an incoming
seizure or an off-hook port seizure during the test). Retest
the board.
3. If all of the ports fail, check the CARR-POW (see Note
below).
4. If several ports fail, check the error log for TONE-BD or
TONE-PT errors. If there are such errors, take the
appropriate action. When the TONE errors have cleared,
rerun the test.
5. If the retry passes and troubles have been reported,
coordinate isolation with the CO. Make sure that the
switch, the CO, and any NTCE equipment (the CSUs)
have the correct administration.
6. Replace the circuit pack.
NOTE:
If the conference circuit test fails for all ports on a circuit
pack, a -5 volt power problem is indicated. If a TN736 or
TN752 power unit circuit pack is present, either the
631DB AC power unit or the 676B DC power unit may
be defective. (The 631DB power unit is used in a
medium cabinet powered by an AC source. The 645B
power unit is used in a medium cabinet powered by a
DC power source.) The system may contain a TN736 or
TN752 power unit or a 631DB AC power unit, but not
both types of power units. To investigate problems with
a 631DB AC power unit, refer to the CARR-POW
(carrier port power unit for AC-powered systems)
Maintenance Documentation. To investigate problems
with a 645B DC power unit, refer to the CARR-POW
(carrier port power unit for DC-powered systems)
Maintenance Documentation. If a red LED on TN736 or
TN752 power unit circuit pack is on, replace the pack.
PASS The port can correctly conference multiple connections.
User-reported troubles on this port should be investigated by
using other port tests and by examining station, trunk, or
external wiring.
Description/Recommendation
Continued on next page
Issue 4 May 2002 10-429