Service Provisioning in the IP Multimedia Subsystem

Abstract

The IP multimedia subsystem (IMS) specifies a service centric framework for converged, all-IP networks. This promises to provide the long awaited environment for deploying technology-neutral services over fixed, wireless, and cellular networks, known as third generation (3G) networks. Since its initial proposal in 1999, the IMS has gone through different stages of development, from its initial Release 5 up to the current Release 7.