Originally Posted by deano_hoosier

I have the Comcast triple play and wondered the same thing. I assumed the land line was really a VOIP service through the computer connection like Vonage is. But, the Comcast Digital Voice works like this:

Comcast supplies a modem that handles telephone connections. It is about the size of a small lunch box. The cable line plugs into it. Also plugging into it is the electrical connection through a small transformer at the electrical outlet. The neat trick is that a telephone wire/connection is plugged into the Comcast modem and then to the nearest phone outlet jack. Once the technician gets all the codes/setup completed you get a regular old dial tone on each phone that plugs into any of the phone outlet jacks in the house. Must drive AT&T crazy. Of course you also get the computer plugs at the modem as well.

You get unlimited local and nationwide calls and you also get a Comcast based answering service that kicks in anytime you don't respond to a call. We have an answering machine on the phone, itself so when it picks up, the Comcast answering process does not start. If, however, you are talking on your phone and receive a call the Comcast answering service will pick that call up.

The system supposedly works with a fax process, but don't know that from my own experience yet.