Specification and development of a multimedia conferencing call model using distributed object oriented techniques

This paper reports on the specification and development of an advanced, feature rich call handling mechanism. The conferencing call model, referred to as the service session graph, is heavily influenced by, and has significantly contributed to, the TINA service architecture informational viewpoint. It is shown that two new features of the model, implicit stream binding and control mechanisms, allow telecom services to incorporate advanced conferencing features in a very efficient way. A number of implementations are described, where the call model is extended with a series of end-user services and runs on top of ATM networks.