The Connection View State approach to IN CS-2 Call Party Handling: flexible control of multi-party calls

Abstract

Industry has made significant contributions over the years to the understanding of how intelligent network (IN) control may be applied to multi-party calls. This work has finally come to fruition in the ITU-T Recommendations for IN Capability Set 2 (CS-2), which support Call Party Handling (CPH), the ability of IN to manage stable calls with two or more parties. CPH makes possible more flexible and customizable multi-party services. This presentation provides an overview of the Connection View State (CVS) approach to CPH, which is defined in IN CS-2. Fundamental to the CVS approach is a set of Connection View objects that represent the connectivity of a call. To manipulate these objects, SCF sends one of a set of atomic operations added to IN CS-2 to support CPH. In addition, mid-call events are made visible to SCF.