The advent of microprocessor techniques has provided a means of flexible and economic automated control of switching functions.
A programmable switching unit has been developed by Tele-Engineering Corp. which permits an operator to implement a switching program which will control 16 switching functions in 196 time slots.
The.system is.so designed that programming is accomplished with simple techniques which can be mastered with about one hour of instruction.
The versatility of application of the system permits it to be used simultaneously for network protection, program selection and local origination programming.
This paper describes the unit, how it is programmed, and results in operational environments.