D. OPTIONS
D-1
BeFREE 20 – TECHNICAL OVERVIEW
D.
OPTIONS
D.1.
Inclination Mechanism
BeFREE 20 can be fitted with an Inclination Mechanism (also referred to as Angle
Adjustment Mechanism). Normally, the display surface of BeFREE 20 is inclined for 15
0
against the horizontal plane. The mechanism enables gradual adjustment of the angle from
approximately 30
0
to 70
0
.
Figure D.1 BeFREE 20 with Inclination Mechanism (VESA 75)
D.2.
HID Telephony Interface
Actual status (pressed/released) of the PTT key is normally reported as a programmable
sequence of keystrokes generated by a standard USB keyboard, this way emulating a
generic HID Keyboard Device. An example of the application can be found in the
Reference [8] (“Hook and PTT in Software”).
Additionally or alternatively, the PTT status can be reported via HID Telephony
Interface, which is an integral part of the BeFREE 20. See reference [9] (“HID Telephony
Interface”) for more details.
