Do all four wires (red, green, black, and yellow) on the phone jack need to be connected for the DSL modem to work correctly? I keep loosing my internet connection and some times I can't get on line at all. The message tells me that there is a break in or at my access point. I am instructed to reboot Modem/router and try again. no luck. The phone guy has checked my interior lines and has passed them and my server has sent me a new box but still the problem persists. I have a tablet that will sometimes get online and then not, so I concluded that it is the server and not my PC.