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CO-DS1 (DS1 CO Trunk)
Issue 1 June 2005 827
Any FAIL The NPE of the tested port did not conference the tones correctly. This will
cause noisy and unreliable connections.
1. Enter list configuration board location. 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 every administered trunk 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 every port fails, check CARR-POW MO or RMC-ENV MO.
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 CSI’s) have the correct administration.
6. Replace the circuit pack.
Note:
Note: If the conference circuit test fails for every port on a circuit
pack, a -5 Volt power problem is indicated. To investigate
problems with a power unit, see CARR-POW (Carrier Power
Supply) MO or RMC-ENV MO. If a red LED is lit on a TN736
or TN752 power unit circuit pack, 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.
Table 283: Test #7 Conference Circuit Test (continued)
Error
Code
Test
Result
Description / Recommendation
3 of 4