DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-438CO-TRK (Analog CO Trunk)
9
FAIL Failure to detect ground or faulty ground detected on Ring lead. Disp lay the
hardware errors for this trunk, to determine if the fault was on- or-off board.
Look for Error Type 1025 or 1281 (if both appear in the Hardware Error Log,
pick the most recent error). Error Type 1025 indicates a faulty ground detected
on Ring lead (an off-board fault) and Error Type 1281 indicates failure to detect
(internally generated) ground (an on-board fault).
Faulty ground detected on Ring lead (Error Type 1025):
NOTE:
On TN747B vintage 8 and greater circuit packs, an incoming seizure
during this test may cause it to fail with an off-board fault.
1. Repeat test. If test passes, ignore the original failure. If test aborts, follow
the recommended procedures.
2. Repeat test with CO line removed.
3. If test fails, replace the circuit pack.
4. If test passes, refer problem to CO.
Failure to detect ground (Error Type 1281):
1. Run the long test sequence. If the CO Demand Diagnostic Test fails, the
Dial Tone Test (#0) fails with Error Code 2002, AND Error Type 3329 or
3585 appears in the H ardware Error Log (with the same last oc curred time
as Error Type 1281 and 1537), replace the circuit pack.
2. Repeat test with CO line removed.
3. If test fails, replace the circuit pack.
4. If test passes, the CO may be drawing too much c urrent. Refer problem to
CO.
PASS This test verifies that the port is able to apply ground for outgoing calls and
detect ground for incoming c alls; however, it does not provide information on
whether a CO line is actually connected. User-reported troubles on this port
should be investigated by using other port tests and by examining trunk or
external wiring.
0NO
BOARD The test could not relate the internal ID to the port (no board).
1. Check to ensure that the board translations are correct. Translate the
board, if necessary.
2. Issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board command. This should re-es tablish the linkage
between the internal ID and the port.
Table 9-182. TEST #3 CO Demand Diagnostic Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page