A Personal Communication Service Creation Model for Internet-based Unified Communication Systems

Advances in the Internet and telecommunications technologies have spurred many research efforts in Internet-based unified communication systems, which integrate heterogeneous devices and networks (PSTN, cellular networks, or the pager networks). Nonetheless, these systems lack support for a systematic, easy, flexible way of customizing and creating services at the system level as well as at the user level. In this paper, we present such a service creation model by exposing a limited set of primitives from a call model that is network and device independent. Our model and framework not only supports the traditional telephony call services easily, but also enables novel way