A Service Platform for Internet-Telecom Services using SIP

This paper proposes the introduction of a Service Platform for the creation, execution and management of multimedia services in heterogeneous networks. Examining the business-roles, the actors in the Service Platform are identified. Furthermore several common building blocks for developing services for the Internet are described and a brief overview of some modern technologies for an object-oriented, component-based, distributed platform for multimedia services is given. The Session Initiation Protocol (SIP) has been identified as very useful to implement all functions according to the multimedia part of the Platform. The usage of the PARLAY API as an open interface between the Platform Services and SIP, the PSTN or the mobile network provides a lot of additional advantages. The interworking between SIP and PARLAY is shown in a call-routing example. Furthermore the call-setup for a multimedia (e.g. video) conference is explained. This should demonstrate the usefulness and the ability of this protocol for introducing a session concept. Finally an outlook of open research topics regarding this concept is given as well as a short overview of related work. S. Bessler, A.V. Nisanyan, K. Peterbauer, R. Pailer, J. Stadler 2