Overview of IMS application layer interaction management

IMS (IP Multimedia Subsystem) network has high demands from perspective of multimedia, flexible and interactive communications. Fulfillment of those demands, with appropriate levels of quality, is not a simple task. As usage of services has great progress lately, there is high demand for their interaction management. Authors suggest way of Next Generation Networks application level organization and way of modeling of application level according to service responses to application requests. Main goal is to shift overload boundaries on the application layer and to show that IMS application layer interaction management is very complex, depending topic.