Recent new features for the no. 5 crossbar switching system
- 1 September 1956
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics
- Vol. 75 (4) , 457-466
- https://doi.org/10.1109/tce.1956.6372560
Abstract
THE NUMBER 5 crossbar switching system was described by Korn and by Ferguson1 in 1950, just a year and a half after the first installation was placed in service at Media, Pa. These authors mentioned the growing need ¿ ¿ for a dial system which would better meet the telephone switching requirements for areas on the outskirts of metropolitan cities and at the same time care for medium-to-large sized offices in other areas.¿ Since that time, the basic switching plan of this system has proved to be so flexible and adaptable that it is finding an ever-expanding application in many new combinations of switching requirements. After a brief review of the basic switching plan described in more detail in the previous article, this paper will cover some of the new features since added to the system.Keywords
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