English
Ringing sounds. Called party answers. 
Wait for the called party to finish 
speaking. Press and hold PTT. Wait for 
the talk permit tone (if configured) and 
talk. Release PTT to listen. Press 
 to 
terminate call.
Making a DMO Simplex Private Call
Enter DMO. From the Home display dial 
a number. Press and hold PTT. Wait for 
the talk permit tone (if configured) and 
talk. Release PTT to listen. Press  to 
terminate call.
Making a Duplex Private Call/Phone/
PABX Call
From the Home display dial a number. 
Press CType to select the call type. 
Press and release  . Ringing sounds. 
Called party answers. Press 
 to 
terminate call.
Answering a Call
Your MTM800 Enhanced switches to the 
incoming call and alerts you of the 
incoming call. To answer the call, press 
 for Phone/PABX/Duplex Private 
calls or press PTT for all other calls. 
Sending a Status Message
Select the desired group, then press the 
Menu and select Messages > Send 
Status. Select status and press 
 or 
PTT. 
Sending a New Message
Press the Menu and select Messages 
> New Message. Write your message. 
Select Send, or press
 or PTT. 
Select your mail recipient or enter 
number. Select Send, or press or 
PTT to send the new message.
Tips & Tricks
•Home Key
Not sure where you are? Want to get 
back to Home display? Press .
• Backlight Control
You can either disable backlight 
(covered operation) or have it 
automatically turned on, by any key 
press.
You can also press the upper Side key - 
just to turn On/Off the backlight (if 
configured). 
• Menu Shortcuts
You can easily access any menu item, 
by pressing the Menu and a numeric 
key. (No delay between the Menu and 
the key!)
You can ask your Service Provider to 
program menu shortcuts.
You may also define a new shortcut: 
enter the menu item, press and hold the 
Menu, and follow the instructions in the 
display.
• High/Low Audio Control
You can control audio routing (speaker /
earpiece) for any Private or Group Call 
via the dedicated speaker control key.
• Unified Contact List
You can keep several numbers (Private, 
Mobile, Home, Work, PABX, Other) for 
the same person under the same 
contact name. 
•Text Size
You can see the text on the display in 
two sizes: Standard or Zoomed 
(Menu > Setup > Display > Text Size).
• “My Groups” Folder
You can select any group (TMO or DMO) 
and add it to your personal folder. 
In the Home display, press
 to quickly 
access your “My Groups” folder.