(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 modem is wired to the Internet via the cable company's coaxial cable, the telephone company's DSL phone line, Verizon's FiOS network or a satellite modem. The router is wired to the modem.

If you've purchased cable internet service, find a cable port in your house to connect the modem to. If you've purchased DSL phone internet service, you'll need to plug the modem into your home's ...

It’s desirable to have your Internet connection ... The I-211M-L modem is actually equipped to run on backup battery power, but by default, it will only keep phone service online.