If using DSL, a DSL Filter must be connected to every thing, phone, answering machine, faxes, etc.
Everything except the DSL Modem/router, itself.
You may share a DSL filter.
wall > Dsl Filter > splitter > multiple devices
Also cordless phones, 2.4gh, use the same frequencies as the wireless routers do. Get rid of the 2.4gh cordless phone and purchase a 5gh one.
I set up my wireless internet with no problems come to find out that when I use my house phone (make calls/receive calls) my internet connection gets lost. I have a phone line connected from the phone jack into the modem, and the modem is hooked up to the wireless router. Did I miss something? I use road runner for my internet and I have an HP laptop. If anymore information is needed I'd be happy to provide. I called road runner about this problem and the only thing they did was reset my modem, which didn't do anything to help.