A Framework for IMS Interworking Networks with Quality of Service Guarantee

The IP multimedia subsystem (IMS) could very well be the best solution for most telecom operators. The more recent releases have included interfaces to fixed line networks and wireless LANs. This has consequences both for the migration of the core network as well as the integration of future mobile services and applications. Also, an interworking between IMS providers is considered to be a major step toward end-to-end IMS services and IPX (IP interworking exchanged) networks are introduced as the requirement to support QoS features in GSMA. But these architectures don´t specify any requirements for e2e QoS through IPX networks. This purpose of this article is to research of IMS interworking network for enlarging IMS services guaranteeing e2e services quality and we suggest the IMIN (IMS interworking network) framework to guarantee IMS high quality end-to-end services.