ressively looking at newer sources of revenue. So far, the typical model for providing data-driven services over the Telecom infrastructure has been through partnerships with content providers. In recent years, however, these partnership-driven services have been facing strong competition from similar technologies and applications provided by Internet Content providers. These applications can be accessed through a browser-enabled phone, while paying only for the connectivity charges, and thereby adversely affect revenues from the paid-for services hosted on the Telecom operator portal. Examples of such services range from VoIP and telephony conferencing services (e.g., skype, lycatalk etc.) to various content services (maps, ringtones, etc.). An increasing num- ber of mobile users are now using browser-enabled phones to access these services, Service Composition and Control bypassing the Telecom portal. For example, it has been estimated that 60% of the mobile content traffic in the United States and 90% in Europe is off portal [1]. Telecom operators, however, have an edge over Internet service providers in terms of their still unmatched core functionalities of location, presence, call con- trol, and SO on, characterized further by carrier-grade Quality-of-Service (QoS) and high availability. As an example, imagine a next-generation instant conferencing application that dynamically connects friends who are in the same location in real time (e.g., mall) with a single click. Further, each user's device dynamically redi- rects/rejects calls depending on real-time preferences (e.g., allow access to my loca- tion only if I am in a public place). Enablement of several such enriched converged services requires the core func- tionalities of the Telecom operator to be easily accessible and composable with third- party services providing the core application logic. Moreover, the underlying converged infrastructure (IP + telephony) needs to be smart enough to be able to provide and manage such enhanced converged services. S