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Modular automatic telephone switching system

  • US 5,022,069 A
  • Filed: 02/21/1989
  • Issued: 06/04/1991
  • Est. Priority Date: 02/21/1989
  • Status: Expired due to Fees
First Claim
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1. A modular automatic telephone switching system for serving one or more central office lines from a central office and one or more local stations comprising:

  • one or more master switching units corresponding in number to the number of central office lines to be served by the system and associated with said central office lines on a one for one basis; and

    whereineach master switching unit comprises;

    a central office port;

    a main port;

    station port means for connection to local station apparatus;

    the station port means corresponding in number to the number of local stations served by the telephone switching system;

    switching means for selectively interconnecting said central office port, said main port, and said station port means;

    interconnecting means for selectively interconnecting said station port means; and

    control means for controlling said switching means and said interconnecting means.

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