
MAN_DZ4_002 Rev 22.0 Flightcell
©
DZMx & DZMx Plus Operator Manual
Page 20 of 43
Effective Date: 28 Jun 2021
Section 6:
Push-to-Talk (PTT) Calling
The DZMx and DZMx Plus allows users to use Iridium's PTT service, providing global call
coverage. The DZMx and DZMx Plus can be switched between phone mode and PTT mode as
required.
Switching to PTT Mode
To switch to PTT mode on your satellite device:
1.
Press and hold the A or B button on the keypad.
2.
PTT Initialising will appear on the display.
3.
PTT: Registering will appear on the display.
4.
You will be able to join a PTT Talk-group or start a PTT call.
Joining a Talk-Group
To join or switch to an alternate Talk-group:
Press MENU > PTT Talk-groups >Scroll to the required Talk-group > ENTER to join it.
Optionally: Press CALL to make it the Default Talk-group. This talk-group will be automatically
joined on start-up.
A PTT call can be started if the selected Talk-group is active and has no other participants
currently talking. The maximum talk time is 40 seconds before the call will hang up. The PTT
modem will automatically listen to other talkers in the talk-group. Other talkers can be temporarily
silenced by pressing END.
PTT Calling with External Button
If the DZMx or DZMx Plus is externally wired to the pilots' PTT button:
1.
Press and hold the aircraft PTT button to start transmitting.
2.
Release the button to stop transmitting.
PTT Calling with the Keypad
If using the keypad to call using PTT:
1.
Press and release CALL to start transmitting.
2.
Press and release CALL to stop transmitting.
Note
:
Iridium PTT is a licensed feature. If you wish to use Iridium PTT, you must subscribe
to the PTT service through your Iridium service Provider, a licence can be purchased from
Flightcell by contacting [email protected].
Note
:
Refer to the DZMx or DZMx Plus Installation Manual to configure PTT and initialise
PTT automatically at start-up. This makes PTT the default mode for frequent users.
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