Comcast refers to their phone service as digital voice because it does not require a phone line. Using an internet connection xfinity voice provides a clearer international call service and many advanced features such as caller id readable voicemail and blocking.

Comcast Home Wiring Diagram Wiring Diagrams
Comcast phone connection diagram. Our automatic 4g lte backup connection can keep comcast business internet customers up and running so they can keep their business going. If youre using av cables instead plug each cable into the same colored port on the back of the box eg plug the yellow cable into the yellow input. These two connections can be clearly seen in the photo to the right of a linksys pap2 whitephone cable. This house diagram may be helpful. Understanding the connection types for your tv internet and voice services identify multiple ways to connect to your television home theatre or audio system. The phone jack from the voip device usually supports a ren 10 of 50 same as local phone company.
It shows one possible method of hooking up a comcast modem to an existing alarm system and is intended to illustrate a concept not to be a schematic diagram. Comcast is a service provider for digital voice high speed internet and television cable. It goes in the wide narrow port in the back of the cable box. The older quad color codes are used because they show up better in a small diagram like this and are also a lot easier to draw. Understand the precautions that need to be taken regarding your xfinity voice modem and home phone wiring with xfinity voice. Read your voip users manual to confirm.
Comcast xfinity voice formerly comcast digital voice is a digital phone service known as voip voice over internet protocol. Instead of the signal coming through a phone line it is transmitted directly through a cable modem. The cable line coaxial cable designated for your phone service or internet is the only one that will work correctly. On most comcast cable boxes the hdmi port is either in the bottom right corner of the box or at the bottom of the boxs back. Thats peace of mind at an affordable cost. Plug in one end of the hdmi cable.
The cable is usually black with a silver end piece. Stay connected even if your power or internet service goes out. On the back of your phone box locate the connection labeled cable it will have threads and a small hole in the center. If you download the xfinity connect app you can also take advantage of unlimited talk and text on. Xfinity for full functionality of this site it is necessary to enable javascript.