Monitoring The Radio Channel; Dial-Up Connection To The Radio - Motorola MC3000 Operating And Installation Manual

Monitoring the Radio Channel

You monitor a radio channel to verify that your transmission will not interrupt a radio com-
munication between other radio systems sharing the radio channel. This is an FCC and
Industry Canada regulated radio procedure.
You will automatically hear any conversation initiated by all deskset consoles and radios
on your system without pressing the button corresponding to the Monitor button on the
digital radio. However, you will not hear conversation initiated by other radio systems that
may share the frequency until you press the Monitor button.
Note: Both the FCC and Industry Canada may assign numerous companies to share a fre-
quency. In this case, separate tone codes are assigned to radios belonging to each com-
pany to offer a degree of privacy. These tone codes encode your radio transmissions so
that your receivers only hear radios belonging to your company (similar to party-line tele-
phones).
Pressing the Monitor button disables the tone code on your receiver so you may tempo-
rarily listen to all conversations from all companies sharing the frequency.
You use the Mode Up and Mode Down buttons (which emulate the digital radio's Mode/
Channel Selector) to select a radio channel and associated TX/RX frequency/ies you wish
to monitor or on which to transmit or receive. Only one radio channel can be monitored at
a time. This normally applies to conventional radio systems not trunking radio systems.
Optionally, to select a different radio channel:
1. Look at the top left hand corner of the LCD display and press the Mode Up or Mode
Down keys to find the desired Mode/Channel or Talk Group in a preset list based on
the configuration of your system.
To listen to the radio channel activity:
1. Press the digital radio function button that corresponds to the Monitor button of the
radio type the deskset is connected to. The Monitor LED turns on. Any radio commu-
nication audio on the channel will be heard on the internal speaker. Alternately, if the
handset is off-hook, you will hear the audio in the handset ear piece.
Release the Monitor button when you have verified that the radio channel is clear.
The Monitor LED turns off.

Dial-Up Connection to the Radio

You use the dial-up function to connect to a digital radio remotely through the telephone
lines. Both the Digital Junction Box the deskset is connected to, and the Digital Junction
Box the radio is connected to, must have a dial-up modem connection.
The dial-up modem requires two phone lines, one for data communication and one for
voice communication (audio). Thus, you must enter two phone numbers to connect the
MC3000 Digital Deskset Operator and Installation Manual
(6880309L15-A)
Operation
Monitoring the Radio Channel
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