Processor call carrying capacity estimation for stored program control switching systems

The call processing capacity of a stored program control switching system central processor is defined as the maximum number of calls which can be processed in some fixed interval of time while the processor is meeting all service criteria. The capacity of the processor is seen as a component capacity and thus assumes all other switching machine engineered items are adequately provided so that the processor can reach its maximum capacity. This paper discusses a scheme to categorize the various types of work performed by the processor. Using this scheme, various scheduling strategies are discussed, and their implications in the face of traffic are analyzed. The framework is then used to discuss call capacity estimation for stored program control system processors using examples of certain Bell System electronic switching systems. Practical problems related to the use of these call processing capacity estimation methods are discussed.