With a cable router, you can connect your home phone to the internet instead of a standard telephone line — provided you have a voice over IP, or VoIP service with your cable company.
VoIP your home's internet access to make local and long-distance calls from a normal home phone. Before you start making any VoIP calls, however, you need to set up the hardware. Set your home phone next to the cable router so that the connection cable is within reach of the cable router. If your modem is not already plugged in, connect a coaxial How does charter hook up phone from the cable jack to the "Cable In" port on the back of the modem.
Plug the power cord into the modem's "Power" input and into a standard wall outlet. If the "Online" light on the modem is blinking instead of solid, the modem may need to be activated. Refer to your cable company's website, smartphone app or phone support to activate the modem. Connect a computer or smartphone to the modem. To connect wirelessly, locate the network name, or SSID, and password, sometimes called Preshared Key, on the modem's label.