Chapter 4 FAQ
Q：The screen on VTH 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 VTH, 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
should I do?
A： Confirm if you have turn on DND function.
Q： I have other problems, what should I do?
A： Please contact technical staff for further assistance.
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