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Communication terminal apparatus having an interrupt/restart function with time measuring control for interruption and disabling feature

  • US 5,146,598 A
  • Filed: 12/14/1989
  • Issued: 09/08/1992
  • Est. Priority Date: 12/27/1988
  • Status: Expired due to Term
First Claim
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1. A communication terminal apparatus connected to an integrated services digital network (ISDN) having an interrupt/restart function, comprising:

  • communication means for performing data communication with a communication apparatus on another end of a line via the ISDN;

    time measuring means for measuring a time period during which said communication means is initially interrupted to communicate with the communicate apparatus on the other end;

    communication termination means for terminating the communication of said communication means with the communication apparatus on the other end when the time period measured by said time measuring means reaches a predetermined value;

    interrupt command detection means for detecting a subsequent communication interrupt command from the ISDN while the communication between said communication means and the communication apparatus on the other end is interrupted; and

    control means for controlling said time measuring means to stop its time measuring operation in order to disable said communication termination means when said interrupt command detection means detects a subsequent communication interrupt command from the ISDN.

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