D9124 Operation & Installation Manual
Page 41
© 1996 Radionics
74-06799-000-D 2/96
Phone Line Failure LEDs
Two yellow phone line status LEDs (one for the primary line, one for the secondary line)
illuminate when phone line voltage drops below 4.5 -7.5 VDC without a corresponding
8-13mA increase in current. The panel monitors both phone lines. The D928 switches
phone lines to the panel at regular intervals so that the panel can test each phone line. If
the D9112LTB senses a faulty phone line, it monitors the faulty telephone line for the
programmed interval before indicating a trouble condition. For more information, see the
description of
Phone Supv Time
Phone Supv Time
in the
D9112B Program Entry Guide (74-06145-000).
Failure to Communicate LED
A yellow LED illuminates when the D9124 goes into communications failure. The LED
extinguishes when communication restores.
AC Power Status LED
The green AC power status LED illuminates when the panel is running on AC power.
When AC power is not available, the LED extinguishes.
Communication Failure
The D9124 makes five attempts on each line before going into communication failure.
The panel clears any reports in its phone buffer. SERVC COMM FAIL appears in the
display at command centers.
Pressing TROUBLE SILENCE silences the tone. When communication restores (a report
is acknowledged by the receiver), the display clears automatically. See
Phone
Parameters in the D9112B Program Entry Guide (74-06145-000) for reporting options.
Registration
The D9124 is registered with the Federal Communication Commission under part 68, for
connection to the public telephone system using a D166 RJ31X jack.
FCC Registration Number: AJ-9USA-18808-AL-E
Ringer Equivalence: 0.1A 0.2B
This telephone interface complies with UL 1459.
Notification
Do not connect registered equipment to party lines or coin-operated telephones. You
must notify the local telephone company and supply them with the following information
before connecting the panel to the telephone network:
•
The particular line on which you are connecting the panel
•
Make (Radionics), model (D9124), and serial number of the panel
•
FCC registration number and ringer equivalence for the panel (see
Registration)
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