I have a dahua vto outdoor unit and two vth indoor units. I set them up via the one button config option. The outdoor unit is connected to the router with a utp cable, and the indoor units are connected to the router via wifi. The problem is that when I call from the outdoor unit, the indoor unit the dmss application on the phone also rings. When I answer and hang up, the external unit becomes unusable, or the blue light around the bell button constantly lights up, or nothing happens, as if the external unit has no power. Checked the power supply, checked the utp cable.I can see the outdoor unit through my laptop that it is online, I can see the picture from the outdoor unit, but it just doesn't work. When I reset everything by turning off the fuse, it works again, but it only rings once and then it doesn't work anymore. I'm desperate, please help.