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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-439DID-DS1 (DS1 DID Trunk)
10
FAIL The NPE of the tested port did not conference the tones
correctly. This can cause noisy and unreliable connections.
1. Enter the list configuration board UUCSS 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.
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.
Table 10-122. TEST #7 Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page