Service Delivery Platform Implementing IP Multimedia Subsystem

With telecommunications carriers shifting their business focus from voice telephony services to packet-based services for E-mail and Web applications and the provision of high-speed services becoming possible as network speeds increase, there is a need for a mechanism that can facilitate the creation of new services. Although the IP Multimedia Subsystem (IMS) has been attracting attention as an architecture that can separate the call control network from applications and combine voice and packet services, architectures based on industry standards and recommendations like IMS may still have problems, such as insufficient business-oriented functions and poor connectivity with service providers. This paper introduces IMS problems from the network architecture viewpoint and describes a service delivery platform that solves them.