Modeling call control for distributed applications in telephony

The advanced intelligent network (AIN) architecture, an environment in which distribution applications are designed, developed, and deployed independent of the network implementation by different service developers, on possibly different platforms, at different times, is considered. The focus is primarily on support for call-processing applications through call-modeling techniques. However, the entities of NECs application service processor (ASP) architecture as a whole are briefly described to provide a basic understanding of the scope of the call model. The call-modeling concepts discussed at the Bellcore-sponsored Multi-Vendor Interaction forum are compared with NEC's call-modeling concepts. A simple approach (i.e. the logical path) for controlling the execution of FCs (function components) when multiple AIN services are active on a call is suggested. An object-oriented implementation based on the NEC call model is described