7
Getting Started
The Display
List of Display Icons
After you turn on your MTM800, icons appear along the top 
of the display to indicate the following conditions:
13)  Mode Key
Select the Phone, PABX, Private, or Group mode.
(See page 12.)
14)  Emergency Key
Initiates Emergency mode and sends Emergency 
Alarms. (See page 14.)
15)  Microphone Connector
Connector for a Fist or Desk microphone with PTT 
button, or the Telephone Style handset.
16)  Volume Knob
Adjusts the volume level. (See page 27.)
17)  Push-To-Talk Button (PTT)
Press to:
• Send a Group, Private, or Emergency Call.
• Send a status message.
18)  Microphone
Speak into this during communications.
Icon Description
Signal Strength (TMO)
Allows you to check signal strength before proceeding 
with a call. Five bars indicate the strongest signal. 
Calls and messages may not be sent or received in 
weak signal areas. A blinking antenna shows out of 
coverage. Move to a location that indicates better 
coverage and reattempt the call. 
The icon is not shown in Direct Mode Group Call
Signal Strength (DMO)
Indicates an incoming Direct Mode Group Call.
Direct Mode
Displayed when the terminal is in Direct mode.
Item Description
6815321H01_KOR.book  Page 7  Thursday, November 13, 2008  8:06 AM