Service Modelling For Multi-Party Calls

ITU-T's Intelligent Network Capability Set- 1 (CS- 1) is restricted to two-party call services. The Global Functional Plane (GFP) of the Intelligent Network Conceptual Model (INCM) - that builds the framework for the IN architecture defined by ITU-T - is the plane that is used to specify services as a combination of service independent building blocks (SIBs). The current GFP is insufficient for handling multi-party call services because the current SIB-set does not provide functionality for manipulating the call topology for more than a two-party call. Especially, the Basic Call Process SIB is suitable only for two-party calls.