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3.2 Switches
3.2.1 Push To Call (PTC)
The Push To Call (PTC) switch allows the user to place a call to a number that has been
programmed, such as the concierge service. To meet GSM specification, pressing the
PTC button with no SIM installed will cause the unit to initiate a "411" call. The
application provider will need to configure the emergency number for its region.
3.2.2 Set Geo-Fence
The switch is used to initiate a geo-fence with a default radius of one-half mile. This
radius may be re-defined by the application provider and is retained in non-volatile
memory. If GPS is not available an error tone will be generated to alert the user that no
geo-fence was set.
3.2.3 User-Defined button
The User-Defined button is a programmable button that can be defined for various
functions. This button could be programmed to generate a call to a number different
from the PTC button, generate a geo-fence with different parameters than the geo-fence
button, send an SMS of the current location to a cell phone, send the current location to
the server, etc.
3.2.4 Volume Buttons
The Mini-MT has two volume buttons for controlling the audio volume level. These
buttons are functional whether in a call or not. The '+' button is used for increasing
volume and the '–' button is used for decreasing volume.
GSM2228AN001
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