Advanced Features
English
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Fireground (Conventional Only)
The portable Fireground Communications System is designed 
for deployment at an incident scene. It consists of five central 
components:
• Your APX portable radios
• Incident Management Software
• Command Terminal
• Radio Frequency (RF) Modem
• DVRS (Optional)
These components provide on-scene and inbuilding radio 
coverage, and enhanced personnel accountability and 
monitoring. 
The radio helps to indicate your presence on the scene if it is in 
the range of the Incident Commander’s command terminal.
Each Fireground Communication System radio automatically 
reports your radio’s ID on the commander’s mobile command 
terminal. Your name, riding position and sector are all can be 
configured to be seen at the Commander’s command terminal. 
If you have a critical situation, you can press the Emergency 
button which activates an alarm on the Incident Management 
Software at the command terminal.
The Fireground signals transmission is always exchanging data 
between your radio and the RF Modem and command terminal. 
The status of your radio includes
• Powering up or down the radio
• Automatic response to Polling
• Response to Evacuation commands
• Pressing the PTT button to make voice transmission
• Sending an Emergency Alarm and Call
Entering Fireground Zone Channel
Procedure:
1 Upon Powering Up
If the Fireground Zone Channel is set as default, you hear 
gurgle tone and the home screen. You are in Fireground 
zone channel.
OR
If the Fireground Zone Channel is set as default, but you 
hear a short, low-pitched tone, the display shows Reg 
failed to indicate that the command terminal does not 
respond to Fireground Zone Channel. Get qualified 
technician for assistance.
OR
Your home channel is not Fireground Zone Channel, toggle 
or change the radio zone channel to Fireground Zone 
Channel.