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the one displayed on the terminal screen when starting the 
call. After exiting from non-tactical emergency mode the 
terminal will be attached to the group that was selected 
before initiating the non-tactical call. When in non-tactical 
emergency mode, you will not be able to switch talkgroups.
DGNA messages have no impact during non-tactical 
emergency mode but only after exiting the non-tactical 
emergency mode.
•A tactical call initiates on the currently selected talkgroup. 
Entering TMO or DMO
Enter TMO or DMO in one of the following ways: 
• Press   
6 2 1 (TMO)
• Press   
6 2 2 (DMO)
• Press the dedicated TMO/DMO one-touch button 
(configured by your Service Provider).
Entering or Exiting Emergency Mode
To enter Emergency Mode from any mode, press .  
The terminal exits Emergency mode and 
switches to Group mode in one of the 
following cases:
• You press and hold Back. 
• The terminal fails to attach to a non-tactical group.
• The system infrastructure detaches the selected non-
tactical group. 
For call alert, see settings in the Tones menu option (page 88).
Upon entering Emergency Mode in TMO, the MTM800 will 
automatically send an Emergency Alarm to the dispatcher (if 
configured by your Service Provider).
The required time you need to press the Emergency key is by 
default set to 0.5 seconds. The time can be configured by your 
Service Provider.
Menu
Menu
Rescue 1
Police
Back Optns
6815321H01_KOR.book  Page 62  Thursday, November 13, 2008  8:06 AM