Voice over Internet Protocol — VoIP — is one way people are making and receiving telephone calls using a broadband Internet connection rather than a regular phone line. VoIP converts your phone call — actually, the voice signal from your phone — into a digital signal that travels through the Internet to the person you are calling. If you are calling a plain old telephone number, the signal is converted back at the other end. If you’re comfortable with new technology, you may want to learn more about VoIP. The Federal Trade Commission (FTC), the nation’s consumer protection agency, suggests that it’s smart to do some research on this technology before signing up for it.