CONVENTIONAL
FEATURES
34
English
SMART PTT
Smart PTT is a per-mode feature that gives the system
manager better control of radio operators. When smart
PTT is enabled in your radio, you cannot transmit on
an active mode. Three radio-wide variations of smart
PTT are available.
• Transmit Inhibit on Busy Mode — You are
prevented from transmitting if any activity is
detected on the mode.
• Transmit Inhibit on Busy Mode with Wrong
Squelch Code — You are prevented from
transmitting on an active mode with a squelch
code other than your own. If the PL code is the
same as yours, you are allowed to transmit.
• Quick-Key Override — This feature can work in
conjunction with either of the two above
variations. This feature allows you to override
the transmit-inhibit state by quick-keying (two
PTT presses within a programmable period – the
default is one second – of each other) the radio.
Note: If you try to transmit (press the PTT) on a
smart PTT mode that is busy, a continuous
alert tone is generated until the PTT is
released; the transmission is inhibited.
• The red LED blinks when the radio is
receiving indicating that the mode is busy.
20L01-A_PR_UG_MTX4500.book Page 34 Friday, April 13, 2007 2:47 PM
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