The well known Internet is the world’s largest computer network. It is a large collection of incompatible servers and computers, interconnected together via gateways, spanning over almost the whole globe. All the computers on the Internet communicate using a specific protocol known as the Internet Protocol (IP). Traditionally, the Internet was mainly to support four applications: Email, news, remote login and file transfer. However it has turned out to be much more. The new application, the World Wide Web (WWW) has put multimedia pages containing text, pictures, audio and video onto the Internet. Nevertheless, due to the limited bandwidth and the unpredictable delays caused by packet switched communication networks, the Internet cannot offer time critical or real time applications.