AN ARCHITECTURE OF SCALABLE ATM SWITCHING-SYSTEM AND ITS CALL PROCESSING CAPACITY ESTIMATION

In this paper, we define the general requirements of ATM switching sys tems such as scalability, distributed fashion, and modularity. Also we propose a practical implementation of a scalable ATM switching system whose capacity can be easily expanded. Firstly, the architecture of t he system is discussed with an emphasis on system scalability, modular ity of subsystems and the simple control network of the design require ments. Secondly, we suggest the three types of distributed call/connec tion control schemes that are suitable for our switching system. We al so estimate their call processing capacity on the average and make a c omparison of them under the various system architectures. Since our sc alable switching system can be constructed to perform the call process ing functions on the various levels of the system capacity, it has muc h adaptability at the various evolution phases or regions of the netwo rk environment.