" Dialup" is the process of connecting one computer (usually a home PC, called a " client" ) to another computer (usually a powerful machine called a " server" )in order to allow the first computer (the client) to access the Internet, programs, or information on the second computer (the server). Most dialup connections provide a "point-to-point-protocol," or PPP, connection to the Internet.This connection makes your computer a point on the Internet -- with its own internet protocol (IP) address, and full capability to access a variety of Internet sites.