A DAVIC-based video-on-demand system over ATM networks

This paper describes the design and implementation of a video-on-demand sys tem which is DAVIC compliant so as to ensure interoperability across vendor s, applications and services. The system is based on a client-sewer archite cture comprising the service gateway, the video sewer and the clients (whic h are the Set-Top Units). Interoperability is accomplished through the use of DAVIC stipulated CORBA-based Digital Storage Media-Command and Control ( DSM-CC) protocols and ATM pre-established Permanent Virtual Circuits. The f ormer is adopted for communication among the different system entities over the network while the latter handles the real-time audio/video transportat ion. The proposed system has successfully completed an interoperability tes t conducted with Panasonic Singapore Laboratories, JVC Singapore and the Na nyang Technological University over the Singapore ONE ATM Testbed attesting to its compliance to DAVIC's interoperability standards.