2
Communication Port
Power, control signal and A/V differential signal
included.
3
Earphone Interface
Only models with earphone have this interface.
Chart 4- 1
Chapter 5 Device Installation Guide
Figure 5- 1
(1) Try to avoid exposing VDP to bad environment, such as condensation, high temperature,
greasy dirt, dust, corrosion, direct sunlight and etc.
(2) If there is abnormality after you plug in network cable, you should unplug it immediately and
unplug the device from power supply. You may plug in the device to power supply after
troubleshoot.
(3) Device installation and test must be done by professional staff. If there is any malfunction or
failure, please do not try to dismount or fix it by yourself, and please contact after-sales
department for assistance.
Please refer to Figure 5- 1 as guide.
Chapter 6 FAQ
Q
：
The screen on VDP is black, and the indicator remains off, what should I do?
A
：
Check the connection of network cable.
Q
：
I cannot call or monitor via the VDP, what should I do?
A
：
Check the connection of network cable, and confirm if the corresponding door
station is working as normal.
Q
：
When there is incoming call from door station, but the ring is not working, what