Computer network. Abstract image of a computer communication network. The bright circles are users and the white lines which connect them represent communication routes. Computers can communicate with each other over telephone lines through a piece of equipment called a modem. An international computer communication network called the Internet has been established for the free exchange of information and ideas. Part of this 'information superhighway' is the World Wide Web (WWW or Web). Web users can navigate between computers by telephone to access text and pictures held in hypertext documents.