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D9112 Operation & Installation Manual
Page 72
74-06144-000-C 2/96
© 1993-1996 Radionics
Phone Line Trouble
Phone line problems that are not corrected can result in the D9112 going into
Communications Failure. You can program the D9112 to monitor one or two phone lines.
See the
D9112 Program Entry Guide
(74-06145-000) for programming instructions.
If you enable the phone line monitor, SERVC PHONE LINE #1 (or 2 if two lines are used)
appears in the command center’s display when the D9112 detects a problem on the
phone line.
Symptom Diagnosis Remedy
SERVC PH LINE #1
(or 2 if two lines are
used) appears
in
command center
display.
D9112's phone line
monitor detects a
phone line as faulted.
1. Verify that the telephone cord is correctly
connected to the RJ31X and the D9112.
2. Verify the Ground Start Jumper is in the
correct position.
3. If using a ground start phone line, verify
D136 relay is in socket K6/J5.
4. Verify that the RJ31X jack is wired
correctly. The incoming phone line must
be wired to terminals 4 and 5. The in-
house phone system must be wired to
terminals 1 and 8.
5. Verify that all telephones are on-hook.
Leaving a telephone on hold after the
other party hangs up creates an off-hook
condition. Verify that no phones are on
hold.
If completing the steps above does not restore
the phone line, meter the phone lines. You
should meter at least 7.5 VDC when the line is
idle (on-hook). You should meter at least 13
mA of current when the line is active (off-hook).
If your readings are below the minimum values,
contact your telephone company repair
service.