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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 10-401DID-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.
PASS The port can correctly conference multiple connections. User-reported
troubles on this port should be investigated using other port tests and by
examining station, trunk, or external wiring.
NOTE:
This test always passes for TN712 Analog circuit packs prior to Vintage
14 and for TN742 prior to Vintage 4.
Table 10-130. TEST #7 Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page