Internet service execution for telephony events

The intrinsic value of a network is measured by the services which it provides to its users. Currently, there are two principal networks for communications: the public switched telephone network (PSTN) and the Internet. As these networks converge, new service ideas become apparent that are not possible in isolation on either of the networks. This paper discusses how the merging of the Internet and the (wirelineand wireless-) PSTN provides for an opportunity to transport the state of a PSTN phone call to the Internet for service execution. Our approach, as embodied in the service architecture, is to leverage the best of the Internet protocols (SIP, XML, HTTP) and technologies (instant messaging, presence) to provide a general framework for personalized service specification and execution.