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Chapter 16
Mission Critical Geofence (ASTRO 25
Trunking)
This feature allows your radio to use the Global Positioning System (GPS) receiver to determine
its location at frequent intervals, and evaluate if the radio is within the Geofence area in real time.
Geofence is a virtual perimeter based on the GPS to define a geographical area on earth.
When your radio enters the predefined Geofence area, your radio receives the Dynamic Regroup
command from the system, and immediately connects to a Dynamic Regroup talkgroup. The radio
display shows the new selected Dynamic Regrouped talkgroup with green intelligent light for your
attention. Voice Announcement is also available to support this feature.
Any new text messages received at Geofence are displayed immediately on the radio display.
NOTE:
If the radio is set up in DVRS, only mobile radio is supported for this feature.
16.1
Entry to the Geofence Area
The Voice Announcement and Text Messaging Service (TMS) display in this feature are optional.
These features must be configured to enable you to hear, and see these indicators.
When the radio enters a Geofence area, the radio immediately sends a message ACK back to the
system.
The radio searches the current zone for the channel with same talkgroup assigned as the Dynamic
Talkgroup and also with same system ID of current trunk system. Once matched, the radio display
shows the first matched and connected channel alias.
If there is no channel with matching Talkgroup ID and trunk system ID, the radio display shows the
channel alias of <DYNAMIC talkgroup>.
Once the radio is connected, you hear a dynamic regroup tone. The radio display shows
<DYNAMIC channel>. The radio display shows the green intelligent backlight, and you hear a Voice
Announcement.
NOTE:
When the radio loses the Global Positioning System (GPS) signal, the GPS icon blinks and the
radio sounds two high-pitched tones repetitively to indicate that the GPS has failed to operate.
The radio display shows the red intelligent light.
If the first matched channel is not configured with Voice Announcement, no Voice
Announcement is played.
The system sends a message to your radio. The radio display shows a direct text message content
without any user operation. This message indicates that you are currently present in a Geofence area.
This TMS remains open on the display until you press exit or home to exit this screen.
NOTE: If there is another incoming text message before you exit the previous message, the
message screen is refreshed to show the latest message.
You can exit the received text message by pressing the Exit button to return to the Home screen. The
other operations are the same as normal dynamic regroup command.
Mission Critical Geofence (ASTRO 25 Trunking)
68012006035-FA
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