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Method for connection of secure conference calls

  • US 4,920,565 A
  • Filed: 07/18/1988
  • Issued: 04/24/1990
  • Est. Priority Date: 07/18/1988
  • Status: Expired due to Fees
First Claim
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1. A method of bridging teleconference calls at each telephone set used within a teleconference network, comprising the steps of:

  • receiving a first incoming signal from a first adjacent teleconference user via a first logical channel;

    decoding said first incoming signal to provide a first incoming speech signal;

    forwarding said first incoming speech signal to a first input of a signal processing circuit means;

    receiving a second incoming signal from a second adjacent teleconference user via a second logical channel;

    decoding said second incoming signal to provide a second incoming speech signal;

    forwarding said second incoming speech signal to a second input of said signal processing circuit means;

    detecting the presence of and decoding a user'"'"'s output speech signal from an output of user interface means;

    forwarding said output speech signal if present to a third input of said signal processing circuit means;

    summing said speech signals of said first and second inputs at said signal processing means and forwarding the summed signal to an input of code translation circuit means for conversion and forwarding to an input of said user interface means;

    summing said speech signals of said second and third inputs at said signal processing means to provide a first outgoing speech signal;

    coding said first outgoing speech signal to provide a first outgoing signal;

    transmitting said first outgoing signal to said first adjacent user via said first logical channel;

    summing said speech signals of said first and third inputs at said signal processing circuit means to provide a second outgoing speech signal;

    coding said second outgoing speech signal to provide a second outgoing signal; and

    transmitting said second outgoing signal to said second adjacent user via said second logical channel.

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