Smart Ptt (Conventional Only); Quick-Key Override; Transmit Inhibit - Motorola APX MOBILE O9 User Manual

68007024014-GK
Advanced Features
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.
2.24.13

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.
Mode
Transmit Inhibit on Busy Channel with Carrier
Transmit Inhibit on Busy Channel with Wrong
Squelch Code
Transmit Inhibit on Correct NAC
Transmit Inhibit on Status Symbols
2.24.13.1

Quick-Key Override

As Smart PTT feature prevents your radio to transmit when the current channel is busy, you can
perform a Double PTT to force a key-up and transmission to override the Smart PTT.
NOTICE: Double PTT is quick press of the PTT twice.
2.24.14

Transmit Inhibit

This feature is available for APCO 25 trunking, Type II trunking and Conventional operations for all
APX radios.
When Transmit Inhibit feature is enabled, the radio stops all transmission including voice and data. The
radio can receive messages but is not able to reply the acknowledgment request of the received
message.
User can physically control the transmission of the radio especially during operation in hazardous
environments with this feature. An environment is considered hazardous when the power emitted by
the radio power amplifier could initiate an explosion or other dangerous reactions.
When the Transmit Inhibit feature is disabled, the radio functions according to its normal operations.
The radio sounds alert tone when user enters or exits this feature and also when PTT is pressed.
NOTICE: Acknowledgment of any messages required from the radio is not transmitted if the
Transmit Inhibition is enabled.
122
Description
You cannot transmit if traffic is detected on the
channel.
You cannot transmit on an active channel with a
squelch code or (if secure-equipped) encryption
key other than your own. If the PL code is the
same as yours, the transmission is not prevent-
ed.
You cannot transmit when the radio is in a NAC
operated digital voice call channel.
You cannot transmit when the radio is in a digi-
tal voice call with the last signal status bit as "in-
bound busy" or "unknown".