such as Xfinity from Comcast Internet with Voice, you must ensure that the cable modem you purchase supports your provider's voice services. While it's theoretically possible to run your old voice ...

By reducing the component count on primary multi-line voice over cable modems by over 20%, the BCM3368 can be used to build more affordable and more reliable voice over cable products.

(1) (Voice Over IP modem) A device that converts Internet-based voice service from the cable or telephone company to the user's telephones. Officially called an analog telephone adapter.

The same coaxial cable coming into the house or office also provides TV and voice over IP (VoIP ... change the IP address assigned to the modem to prevent Web hosting (see DDNS).