Replace your existing home phone service with this Vonage Single Port Router to get unlimited, nationwide, crystal-clear calls. The Motorola VT1005v dual-port voice terminal adapter fully supports Vonage's VoIP service (voice over Internet Protocol) and lets you connect up to two phones. The adapter works by converting your voice from analog to digital, which is then recognized as data and transmitted over the Internet. The VT1005v will work with any cable or DSL modem and operates seamlessly with any PC, Mac, or UNIX-based computer, so you can talk and surf at the same time.