I have a filter plugged into my wall phone line. I have a phone line plugged into the filter which goes to my modem for internet service. My phone service is Vonage, a VoIP service and the phone I ...

A friend called me tonight and said his modem kills his phone line. New one on me. He says the modem works but he has to physically unplug the phone line from the modem to get a dial tone. He has ...