E F Johnson Company 2425M80 Benutzerhandbuch

Draft 02 - Sep 1 2015

4-21

There are many different types of triggers and many more combinations of those types. 
See the TIA standard for more information about triggers. 

Triggers are divided into two types. One Shot triggers happen once and then are complete. 
Periodic triggers happen periodically. Triggers may have start and stop times. Triggers 
will only be armed within their specified start/stop times.

Triggering can be started both by commands from an LSHS and from programming. 
Triggers marked with a * below are programmable. 

The radio only supports a single trigger of each type. Sending a new trigger of a type that 
is already in use will overwrite the existing trigger. This includes triggers set by the LSHS 
and programming software.

The following table shows the supported triggers. The radio does not support 
combinations of triggers.

Triggered-Location-Stop-Request

Sent from the LSHS to the radio to tell it to stop doing a previously 

specified trigger.

Triggered-Location-Stop-Answer

Sent from the radio to the LSHS to acknowledge the Triggered-

Location-Stop-Request.

Unsolicited-Location-Report

Sent from the radio to the LSHS when the user sends data using the 

“Display GPS” function.

Location-Protocol-Request

Sent from the LSHS to the radio to determine the LRRP protocol 

version of the radio.

Location-Protocol-Report

Sent from the radio to the LSHS in response to the Location-

Protocol-Request

Table 4.5 Supported Triggers

One Shot

This trigger happens once at the time specified in the Triggered-

Location-Request.

One Shot PTT

This trigger happens once when the user PTTs the radio. This trigger 

is activated when the user presses the PTT button but the data will 

usually be sent after the call is over. We do this to avoid delaying the 

call.

One Shot Emergency

This trigger happens once when the user puts the radio into 

emergency.

Periodic*

This trigger happens every period specified by the Triggered-

Location-Request.

Table 4.4 Supported LRRP Messages