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Exchange apparatus enclosing a plurality of extension terminals and connecting an extension terminal to a line wire

  • US 5,361,299 A
  • Filed: 02/16/1994
  • Issued: 11/01/1994
  • Est. Priority Date: 09/28/1989
  • Status: Expired due to Fees
First Claim
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1. An exchange apparatus which encloses a plurality of extension terminals and connects the extension terminal designated by a signal from a line wire, comprising:

  • memory means for storing a first attribute of the plurality of extension terminals; and

    control means for allowing a second attribute designated by the signal from the line wire to be displayed by one of the plurality of extension terminals,wherein said control means connects the line wire to the one of the plurality of extension terminals after waiting for a predetermined key operation performed at the one of the plurality of extension terminals, if the first attribute of the one of the plurality of extension terminals and the second attribute designated by the signal from the line wire are different from each other, andwherein said control means connects the line wire to the one of the plurality of extension terminals without waiting for the predetermined key operation performed at the one of the plurality of extension terminals, if the first attribute of the one of the plurality of extension terminals and the second attribute designated by the signal from the line wire are not different from each other.

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