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Magrath Fire Dept
Standard Operating Protocols Manual
The Magrath Fire Department utilizes a Zetron Radio-Phone interface board
to permit fire personnel with keypad equipped radio equipment to perform the
following functions:
For use only by authorized Magrath Fire Department personnel.
Procedure:
Answering the Fire Line. 
When the fire alarm phone (758-3232) rings, the Zetron monitors the line and
also "rings" (warble) over the fire radio channel.
- To pick up the line (must be ringing) .. make sure radio lockout is off,
turn off scan on radio (if required), switch to channel 1, then - key the
microphone (PTT), press the * key for about 2 seconds, and then release the
microphone. The Zetron will confirm with a beep. You are now connected
radio to phone line. While you are talking the other party cannot be heard
by you and vice versa. Collect all information.
- To disconnect the line .. PTT and press the # key for about 2 seconds.
Note: Must disconnect line in order to initiate the fire alarm (if
required).
Starting the Fire Alarm.
The Zetron is programmed to control two relays. Relay A controls the fire
hall phone line and Relay B controls the fire alarm itself. These relays are
controlled as follows:
- First, send attention code to Zetron: While keying the microphone
(PTT) enter code *,*,1. Release the microphone and the Zetron should
respond with a double-beep.
- Then send one of the following code combinations:
- PTT 1,1 .. Turn Relay A and B ON - pickup phone and start alarm
- PTT 0,1 .. Turn Relay A unaffected, Relay B ON - start alarm
- PTT 0,0 .. Turn Relay A and B OFF - reset Zetron
If code is accepted, the Zetron should respond with series of five
beeps. In addition, when the fire alarm is started another external relay
will play high-low tones over the radio on the fire channel while the alarm
sounds at the fire hall.
IMPORTANT: Remember to reset the Zetron (i.e. using PTT *,*,1,0,0 ) or the
relays will remain open and potentially cause subsequent false alarms.
Answering the Fire Hall Line.
When the fire hall phone rings (758-6507) for more than 4 times, the Zetron
monitors the line and also "rings" (bing/bong) over the fire radio
channel.
- To pick up the line (must be ringing) .. key the microphone (PTT), press
the * key for about 2 seconds, and then release the microphone. The Zetron
will confirm with a beep. You are now connected radio to phone line. While
you are talking the other party cannot be heard by you and vice versa.
- To disconnect the line .. PTT and press the # key for about 2 seconds.
Note: Must disconnect line in order to initiate the fire alarm (if
required).
Remote access to Fire Hall Line.
The Zetron Relay A controls the fire hall phone line (758-6507). Using a
keypad equipped radio, the line can be put off hook, dialed, and used as a
radio-phone. The line must not already be in use. The fire alarm line
(758-3232) has priority .. if this line rings while the other is in use, the
Zetron will drop the fire hall phone connection and ring with the fire alarm
line.
- First, send attention code to Zetron: While keying the microphone
(PTT) enter code *,*,1. Release the microphone and the Zetron should
respond with a double-beep.
- Then send one of the following code combinations:
- PTT 1,0 .. Turn Relay A ON, Relay B unaffected - pickup phone .. wait
for dialtone then silence and dial number on keypad. Switches to
radio-phone mode.
- PTT 0,0 .. Turn Relay A and B OFF - reset Zetron
If code is accepted, the Zetron should respond with series of five
beeps. In addition, when the fire alarm is started another external relay
will play high-low tones over the radio on the fire channel while the alarm
sounds at the fire hall.
IMPORTANT: Remember to reset the Zetron (i.e. using PTT *,*,1,0,0 ) or the
relays will remain open and potentially cause subsequent false alarms. |
