User's Manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance Objects
3-395CO-TRK (CO Trunk)
3
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.) Another 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.
The last cause could be that certain types of
noise are present on the CO line during the
silent period of ringing.
Check for other errors first and
then see Note 4 at end of table.
2817 57360 Ground but no ringing. This error occurs on
an incoming call on a ground-start trunk. If
ringing is not detected within 5 seconds of
the Tip being grounded, the call is still
accepted. If the CO is of the No. 5ESS.
switch type, ringing delays of more than 5
seconds during heavy traffic are fairly
common.
Check for other errors.
2817 57393 On the TN465, the loop is opening too slowly
after a disconnect. This error indicates an
on-board problem, although the trunk may
be functional. On the TN2138, CO released
the trunk at least 4 minutes after the PBX
dropped the call. This error code is log-only
and causes no other testing to occur. No
alarm is generated.
Check for other errors.
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.
Check for other errors.
3329 57408 Trunk error. No Tip ground detected on
outgoing call. This error occurs when an
attempt is made to seize a ground-start CO
trunk for an outgoing call and Tip ground is
not detected or the caller hangs up before
Tip ground is detected.
See Notes 1 and 2 at end of
table.
Table 3-172. CO Trunk Errors with NO Tests — Continued
Error
Type
Aux
Data Description and System Action System Technician Action
Continued on next page