Product Category
TOP-2003 video intercom system
1. The extension can call but there is no video (the screen is not bright)?
A. check whether the k line on the host power interface is connected with the g line; B. whether the two lines 7 and 8 of extension terminal are connected properly.
2. The extension can call but there is no video (the screen is bright)?
Check whether the video cable from the host to the extension is reversed.
3, the host calls the extension, the extension only rings once and the line is disconnected?
A. whether the extension is programmed into a secondary extension; B. whether the power supply voltage of the extension terminal is normal (not less than 15v during operation); C. replace the host or extension and try again.
4. The extension can call but cannot monitor the host?
Whether the host number is compiled into a secondary host (the extension cannot monitor the secondary host).
Military manufacturing
Building intercom top ten brands
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