MTM800
With Enhanced Control Head
Quick Reference Guide
Turning the MTM800 Enhanced On/Off
To power the MTM800 Enhanced on/off, 
press and hold   or the On push button.
Using the MTM800 Enhanced Menu Sys-
tem
• To enter the menu, press the Menu 
button.
• To scroll through the menu, press  / .
• To select a menu item, press Select soft 
key or  .
• To return to previous level, press Back or 
.
• To exit the menu items, press  .
Selecting Trunked/Direct Mode 
Operation
• Your terminal may be configured with a 
One-touch button to switch between 
TMO/DMO. Contact your Service 
Provider for more information.
• From the Home display press Optns, 
select Trunked Mode/Direct Mode.
Making a TMO Group Call
From the Home display navigate to the 
desired group. Press Select soft key (if 
configured). Press and hold PTT. Wait for 
the talk permit tone (if configured) and talk. 
Release PTT to listen.
Making a DMO Group Call
Enter DMO. Navigate to the desired group. 
Press Select soft key (if configured). Press 
and hold PTT. Wait for the talk permit tone 
(if configured) and talk. Release PTT to 
listen.
Making a TMO Emergency Group Call
Enter TMO. Press and hold the Emergency 
button. Emergency alarm is sent 
automatically. Press and hold PTT. Wait for 
the talk permit tone (if configured) and talk. 
Release PTT to listen. If using “Hot Mic” 
feature, wait for the Emgncy Mic On 
message to appear on the display and talk 
without pressing PTT.
To exit Emergency Mode, press and hold 
Exit soft key.
Making a DMO Emergency Group Call
Enter DMO. Press and hold the Emergency 
button. Press and hold PTT. Wait for the 
talk permit tone (if configured) and talk. 
Release PTT to listen. To exit Emergency 
Mode press and hold Exit soft key.
Making a TMO Half-duplex Private Call
From the Home display dial a number. 
Press CType to select the call type. Press 
and release PTT. 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 Half-duplex 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 Full-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/Full-duplex Private 
calls or press PTT for all other calls. 
Rotary Knob/
Power On
Display Icons
Menu Key
On-Off/End/Home 
Key
LED
Alphanumeric 
Keypad
Alphanumeric 
Display
Emergency 
Button
Microphone/
Handset 
Connector
Soft Keys
Send Key
Navigation Key
Programmable 
Keys