Avaya Definity SI Maintenance Manual page 1385

DIOD-TRK (DIOD Trunk) [G1.2SE]
These errors cause the Dial Tone Test (#0) to run and are only considered
a problem if the Dial Tone Test fails (in which case Error Type 1537 also
shows up). In this case, the trunk may be put in "Ready-for-Service" state
(shown as "disconnected" by status command), which allows only incoming
calls. Run the Dial Tone Test (#0) and follow its outlined procedures.
d. Single polarity ringing current - This error results from abnormal ringing
current, but does not prevent the incoming call from being accepted. This
error code is only logged as an informational event and causes no other
testing to occur.
e. Late CO Trunk release - This error indicates that the CO releases the trunk
at least four minutes after the PBX dropped the call. This error code is only
logged as an informational event and causes no other testing to occur.
Table 10-223. DIOD Trunk Errors with NO Tests
Error Aux
Type Data
769 57392 CO not releasing after call is dropped from PBX end
(TN747B), or the loop is not open after a disconnect
(TN765). After several occurrences, an off-board
(TN747B) or on-board (TN465) warning alarm is
generated.
2561 57345 Single polarity ringing current. This error results
from abnormal ringing current, but does not prevent
the incoming call from being accepted. One cause
could be that the reverse current detector
associated with the port is failing. (Will not be
detected by any tests.) The other cause could be
that normal current is not detected. In this case,
neither incoming nor outgoing calls can be
completed, and the dial tone test also fails.
2817 57393 CO released the trunk at least four minutes after the
PBX dropped the call. This error code is log only
and causes no other testing to occur. No alarm is
generated.
3073 57376 No loop current on incoming call. The incoming
destination has already answered and no loop
current has been detected. If this is a hard fault, the
dial tone test and all outgoing calls should also fail.
3585 57424 No loop current on outgoing call. This error occurs
on attempt to seize a loop or ground-start trunk for
an outgoing call. An error occurs if loop current is
not detected or the caller hangs up before it is
detected.
NOTE:
At the administration terminal, busyout the affected port, and run a Long
test. If Dial Tone Test #0 passes, ignore this error. Release the port.
555-233-123
Description and System Action
System Technician
Action
Refer problem to CO.
Check for other errors.
Check for other errors.
Check for other errors.
See Note at end of table.
Continued on next page
Issue 4 May 2002 10-599