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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-416DID-TRK (DID Trunk)
10
3
7
129
131
133
(cont’d.)
FAIL
(cont’d.)
FAULT ISOLATION: Proceed as follows unless power or tone problems are
suspected (see note below).
1. To make sure the problem is on-board, disconnect the port from the
far-end and retry the test. Coordinate this with the CO, or do it after
busy hours.
2. If the retry fails, replace the circuit pack.
3. If the retry passes and no troubles have been reported, disable the
test in the trunk group administration. If the retry passes and troubles
have been reported, coordinate isolation with the CO.
NOTE:
If the loop around and 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 circuit pack 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. If the test fails on more than 1 port,
check for errors on the TONE-BD or the TONE-PT. If errors, take
appropriate actions. When the tone errors are cleared, rerun the
test. If the test fails again, see ’FAULT ISOLATION’ above.
PASS DID Trunk Loop Around and Conference Test is successful. This port is
functioning properly.
1. If users are reporting troubles, examine loop connections to the port
and refer problem to the CO.
Table 10-134. TEST #33 Loop Around and Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page