Digital Ptt Id Support; Smart Ptt (Conventional Only) - Motorola APX 4500Li User Manual

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• The radio is muted if no activity is present.

Digital PTT ID Support

This feature allows you to see the radio ID (number) of the
radio from whom you are currently receiving a
transmission. This ID, consisting up to a maximum of eight
characters, can be viewed by both the receiving radio and
the dispatcher.
The ID number of your radio is also automatically sent
every time the PTT button is pressed. This is a per-channel
feature. For digital voice transmissions, the ID of your radio
is sent continuously during the voice message.

Smart PTT (Conventional Only)

Smart PTT is a per-personality, programmable feature used
to keep radio users from talking over other radio
conversations. When Smart PTT is enabled in your radio,
you cannot transmit on an active channel.
The following table shows the variations of Smart PTT.
172
Mode
Transmit Inhibit on Busy
Channel with Carrier
Transmit Inhibit on Busy
Channel with Wrong
Squelch Code
Quick-Key Override
Description
You cannot transmit if
traffic is detected on the
channel.
You cannot transmit on
an active channel with a
squelch code or (if se-
cure-equipped) encryption
key other than your own.
If the PL code is the same
as yours, the transmission
is not prevented.
Your radio must be pre-
programmed to allow you
to use Quick-Key Over-
ride. This feature works
with either one of the two
above variations. You can
override the transmit-in-
hibit state by quick-keying
the radio (press PTT but-
ton twice within the pre-
programmed time limit).