Stored program control-assisted electromechanical switching—An overview

This article provides an overview of localized stored program control applications in existing electromechanical switching systems. Economic factors and design constraints imposed by established system architectures are reviewed. Criteria for introducing stored program control, along with main design considerations for its implementation, are outlined. Examples are given of actual electro-mechanical switching systems that have been modernized with selective application of stored. program control to upgrade system features and capabilities.