Southwestern Bell Telecommunications, Inc.

Noel Atkinson

William Baker

Michael Kenneth Pedigo

Henry P Shelton

A cordless telephone system includes a control unit having a speaker, a microphone and control circuitry for selective operation in a 'normal' mode for communications between the handset and an outside party, a 'local answer' mode for communications between a party at the control unit and an outside party, an 'intercom' mode for communications between parties at the control unit and the handset and a '3-way' mode for communications between parties at the control unit and handset and an outside party. A microprocessor so responds to ring detect, control and switch-generated interrupt signals as to obtain the desired communications.

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Indianapolis, IN, United States of America

Noel Atkinson