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Multiple party telephone control system

DC
  • US 4,939,773 A
  • Filed: 06/26/1989
  • Issued: 07/03/1990
  • Est. Priority Date: 06/26/1989
  • Status: Expired due to Term
First Claim
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1. A multiple-party control system for use with a telephone facility to selectively interface a coupled primary terminal with a multiplicity of remote coupled terminals through said telephone facility, said system comprising:

  • preliminary screening structure for confirming calls at select terminals and indicating an audio status to persons at connected terminals;

    gang holding structure for collectively communicating with persons at said select terminals collectively as a group; and

    controlled switch means for coupling individual terminals to said preliminary screening structure during an engagement phase of operation, subsequently connecting said select terminals to said gang holding structure during a pending phase of operation and thereafter unilaterally connecting said gang holding structure to said primary terminal during an interface phase of operation.

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