Performance Analysis of Hybrid Switching Concepts for Integrated Voice/Data Communications

This paper describes and evaluates variations of a generic hybrid switching concept for integrated voice and data communications. Concepts examined include the Slotted ENvelope NETwork approach, the enhanced hybrid (SENET with time assignment speech interpolation/time assignment data interpolation), the flexible hybrid, and the variable length frame/packet approach. Primary criteria used to evaluate the concepts are transmission throughput efficiency and delay versus information throughput. Other criteria, such as voice continuity and routing/flow control, were also applied. It is seen that several of the hybrid approaches perform very Well in comparison with circuit and packet switching techniques, in terms of their ability to service different traffic mixtures both efficiently and effectively.