Help > About ... > The product COMfortel D-400 > Device Overview > Headset socket assignment
Headset socket assignment
1
DHSG BUS_IN
2
DHSG GND
3
-
Microphone
4
-
Loudspeaker
5
+
Loudspeaker
6
+
Microphone
7
DHSG + 3.3 V
8
DHSG BUS_OUT