Abstract: A video-on-demand (VOD) system provides a service which enables users of the system to request in real time and the transmission of a video stream from a collection of available video material. Because different layers of a VOD system, one is resource management in the session and connection layer and the other is service control in the application layer, contain different interactive issues, a well design for controlling interactivities is needed. This paper studies a conceptual two-level gateway model to handle the system's interactions so as to build up an easy-extended VOD system. We present our work of implementing an Ethernet- based VOD system is easy to extend to an interactive multimedia system that builds up with multiple service providers and supply different kinds of services. !13
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