I to am wondering how this system works. I got mine installed yesterday and my setup is this.
Cable Modem/WiFi router Arris TG862, supplied by comcast. I also have my own Cisco WiFi router connected down streem of the arris. I have the WiFi disabled on the Arris and I use WiFi with the Cisco. When I got home the guy had already started installing the equipment, he had everything out of the boxes. I asked him how it was connecting to the internet and he told me that it is through the Arris router. But if I have the WiFi disabled in the Arris is there another WiFi network that I don't see?