Presence-based runtime composition of IMS services deployed in a SIP servlet platform

Abstract

The IP Multimedia Subsystem (IMS) is aimed to enable the delivery of rich multimedia services in converged networks. Due to the current needs of the mobile telecommunications market to deliver tailored experiences to its users, IMS operators must be able to manage the interoperability and cooperation between the deployed services, in order to provide a high level of customization to their subscribers. With this goal in mind, this paper presents an extension to the Default Application Router introduced in the Java SIP Servlet API v1.1. The proposed Presence AR allows runtime changes in the precedence relationships and application subscriptions that build the composition chains, based on the Presence information of the users involved in the session. © 2008 International Federation for Information Processing.