10
LED Status Indicators
The LED indicators shows the in-service status of your 
MTM800.
Powering On/Off
To power on: 
• Press the On/Off pushbutton.
• If the MTM800 is configured with ignition sense, the radio 
will automatically turn on whenever the vehicle ignition is 
turned on.
• If an Emergency Foot Switch is connected to the 
accessory connector and “Emergency with wake up” is 
enabled by your Service Provider, the MTM800 
automatically turns on in Emergency Mode whenever the 
Emergency Switch is pressed (see “Emergency Mode” on 
page 61).
A set of icons and squares will appear on your display. (See 
“List of Display Icons” on page 7.) Then your MTM800 
performs a self-check and system registration routine. The 
display shows additional information while the MTM800 is 
registering on the system.
After successful registration, the MTM800 will be in service.
Indicator Status
GREEN: Solid  In use
GREEN: Blinking  In service 
RED: Solid  Out of service
RED: Blinking  Connecting to a network / 
Entering DMO
ORANGE: Solid Transmit Inhibit (TXI) in service / 
Channel busy in DMO
First solid then blinking 
ORANGE
Incoming call
No indication Switched off
6815321H01_KOR.book  Page 10  Thursday, November 13, 2008  8:06 AM