The number 5 crossbar dial telephone switching system

@article{Korn1950TheN5,
  title={The number 5 crossbar dial telephone switching system},
  author={F. A. Korn and James G. Ferguson},
  journal={Transactions of the American Institute of Electrical Engineers},
  year={1950},
  volume={69},
  pages={244-254}
}
  • F. Korn, J. G. Ferguson
  • Published 1950
  • Physics
  • Transactions of the American Institute of Electrical Engineers
The Number 5 Crossbar System is the newest switching system to be installed for use with dial telephones. It is capable of operation with all present local, tandem, and toll switching systems. It can be used for as few as four digits in a subscriber number, or as many as 11 digits may be used to code the called subscriber completely 
8 Citations
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References

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Crossbar dial telephone switching system
IT IS the purpose of this paper to describe briefly the crossbar dial-telephone central-office switching system which has recently been developed by the Bell System for use in large cities. Sixteen
Crossbar Toll Switching System
IN AUGUST of 1943 a new mechanical toll switching system was placed in service in Philadelphia. It was designed by engineers of the Bell Telephone Laboratories and of the department of operation and
Multifrequency pulsing in switching
Applications of multifrequency pulsing in switching are described in this article. Today, many installations of this type are being made in cities throughout the nation. This system permits operators
Fundamentals of the automatic telephone message accounting system
  • J. Meszar
  • Engineering
    Transactions of the American Institute of Electrical Engineers
  • 1950