No single organisation owns the Internet, and within each country regional and national networks are linked globally by satellite and fibre optic cable. Telstra Internet manages the Internet links within Australia, and international gateways to the USA, Asia, and New Zealand. Material is in text, pictures, photographs, images, movies, and sound. It is also used to connect to and search research databases. University and research organisations, government, business, public organisations, schools and individuals use the Internet to distribute information, publish, and advertise.
Universities connect through campus and regional networks.
Electronic Mail or Email enables communication between individuals and groups. The World Wide Web uses hypertext links to connect to material on computers around the world. Telnet or remote login is used to connect to text versions of library catalogues and online databases. Usenet Newsgroups are discussion groups on thousands of different topics. Web Chat enable real time group conversations over the Internet.