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English
After the D-PTT tone is played, the user can press and hold the PTT 
once again to get the permission to talk.To activate/deactivate the 
D-PTT Tone:
1. From the main menu, select Setup > Tones > D-PTT Tones > D-
PTT Mode.
2. Choose required setting, and press Select. Press Back to exit.
To choose the tone:
1. From the main menu, select Setup > Tones > D-PTT Tones > 
Tone Style.
2. Choose the tone between three options: Single, Double or 
Triple. Please go to D-PTT Tones on page 10 to view the 
specification of the tones.
DMO Group Calls
In DMO the MTM800 Enhanced can be used without your Service 
Provider’s infrastructure.
DMO allows communication with other terminals also operating in 
DMO, which are on the same frequency and group as your MTM800 
Enhanced. 
When you start a call, the members of the selected group who have 
their units turned on will receive the Group Call.
In DMO the MTM800 Enhanced can communicate with the trunking 
system (and vice-versa) if the Gateway option is enabled in the 
MTM800 Enhanced.
Making a DMO Group Call
1. Enter Direct Mode by pressing Optns and selecting Direct 
Mode. 
2. Make sure that you have selected the required group. Press and 
hold the PTT button. 
3. Wait for the talk permit tone and then speak into the microphone. 
Release the PTT button to listen.
In DMO it is only possible to place the following call types: Group 
Calls, Emergency Group Calls, Private and Private Simplex Calls.