User guide
Doortel 4
Issue 1.01
Page 6
View of the DOORTEL 4 electronic board. Connections.
Analogue telephone line (T/R)
Connector external
LED
LED indicator
Connection external contact 2
Connection contact 1
Input 12 Vac/dc power supply (optional)
Volume
loudspeaker
Output 12Vdc
(12Vdc/GND)
Connection loudspeaker
(SPK/GND)
Connection microphone
(MIC(+)/8V(-))
Volume
microphone
- +
Sw
2
Sw1
P2
P1
Sw6
1
2
4
1
2
4
Sw
4
P T
Sw
5
Sw3
ON
OFF
