A cable set-top box with voice over internet protocol includes a housing; a coaxial cable input for accepting a coaxial cable containing a video content signal and a data content signal from a provider, the data content signal for providing the voice over internet protocol to a telecommunication's device; a demultiplexer for splitting the video content signal and the data content signal; a video output for accepting a video line for transmitting the video content signal to a video device; and a data output for accepting an audio line for transmitting the data content signal to a telecommunications device.