Abstraction of transport networks and control messages for intelligent network

The service control concepts for intelligent networks are discussed, focusing on service action, service control, and functional architecture. A method of abstracting network configurations and switching system architectures to realize a wide variety of service definitions is described. The method involves the conceptual requirements for the modeling of networks and switching systems, a network model which is necessary and sufficient for services obtained by abstracting real network configurations, and a functional model for controlling switching systems in terms of the proposed abstract network model