Motorola SL7550 - Manual (Page 26)

Identifying Radio Controls
English
12
Push-To-Talk (PTT) Button
The PTT button on the side of the radio serves two basic
purposes:
• While a call is in progress, the PTT button allows the radio to
transmit to other radios in the call.
Press and hold down PTT button to talk. Release the PTT
button to listen.
The microphone is activated when the PTT button is pressed.
• While a call is not in progress, the PTT button is used to make
a new call (see Making a Radio Call on page 26).
If the Talk Permit Tone (see Turning the Talk Permit Tone On
or Off on page 83) is enabled, wait until the short alert tone
ends before talking .
During a call, if the Channel Free Indication feature is
enabled on your radio (programmed by your dealer), you
will hear a short alert tone the moment the target radio (the
radio that is receiving your call) releases the PTT button,
indicating the channel is free for you to respond.
You will also hear a continuous talk prohibit tone, if your
call is interrupted, indicating that you should release the
PTT button, for example when the radio receives an
Emergency Call.
PTT
Button
NAG-LACR.book Page 12 Wednesday, May 2, 2012 2:47 PM