Broadband multimedia services design and implementation exploiting IN features

In this paper we provide a comprehensive methodology for the specification and design of broadband multiatedia telecommunication services with IN capabilities. Initially the key concepts of an integrated IN / B-ISDN architecture are presented aiming at the provision of novel multirnedia features such as the coordination of different calls in a session as well as call / connection separation. The paper proposes alternative ways of producing IN service models from the prose description of the services. Consequently we examine the available options for distributing service logic in the various network nodes followed by a discussion on service data tables and the specification of rnessage flows across interfaces. Finally a mapping from a formal service specification in SDL towards a an actual service design is provided by means of a Service Creation and Simulation Environment. Throughout the paper two services are used for providing practical examples of the proposed methodology - a Video on Demand (VoD) service which is a true IN service and a Broadband Video Conference Service (B-VC) which is based on an existing implementation originally targeted for a TCP IP network platform.