The ODO Project a Case Study in Integration of Multimedia Services

Recent years have witnessed a steady growth in the availability of wide area multi service networks These support a variety of tra c types including data control messages audio and video Consequently they are often thought of as integrated media carriers For example ISDN is often spoken of as an integrated voice and data network To date however use of these networks has been limited to isolated applications which exhibit very little or no integration across the services that they provide Rather than talk about the physical integration of networks at the communications level this paper focusses on integration of services at the application level Exactly what we mean by this is best illustrated by an example