Motorola SL300 用户手册

transmitting radio releases the PTT button, indicating
the channel is now available for use.

You cannot respond to an All Call.

Note: The radio stops receiving the All Call if you
switch to a different channel while receiving the call.
During an All Call, you will not be able to use any
programmed button functions until the call ends.

A Selective Call is a call from an individual radio to
another individual radio. It is a Private Call on an
analog system.

When you receive a Selective Call, the LED blinks
green. Your radio unmutes and the incoming call
sounds through the radio's speaker.

1 Hold the radio vertically 1 to 2 inches (2.5 to 5.0

cm) from your mouth.

2 Press the PTT button to respond to the call.

The LED lights up solid green.

3 Wait for the Talk Permit Tone to finish (if enabled),

and speak clearly into the microphone.

4 Release the PTT button to listen.

If there is no voice activity for a predetermined period
of time, the call ends.

See 

on page 27 for details on

making a Private Call.

You can select a channel by using:

• Channel Selector Switch.
• A programmed One Touch Access button 

Note: Your radio must have the Privacy feature
enabled on the channel to send a privacy-enabled
transmission. Only target radios with the same
Privacy Key as your radio will be able to unscramble
the transmission.

To make a call to a group of users, your radio must
be configured as part of that group.

1 Do one of the following.

• Select the channel with the active group alias

or ID. See 

 on page 24.

Making and Receiving Calls

English