A communication connection from your computer to a host computer over standard phone lines. Unlike a dedicated line, you must dial the host computer in order to establish a connection. Dial-up line is currently the most popular form of Net connection for the home user.
A communications medium described as a non-dedicated telephone line, in which a connection is established by dialing a destination number and broken when the call is complete. This is the same type of phone line that you use at home.