74318154
Sep 28, 1992
Oct 19, 1993
telemessaging systems; namely, an electronics controller consisting of telephone line interface circuits, microprocessor controllers, and digital control and switching circuits, power supplies, and digital storage devices; one or more operator work stations consisting of a video terminal, keyboard, and audio and data interface circuits; and peripheral units comprising printers and modems connected together to form a multi-workstation-based telephone messaging system for use in both industrial and commercial environments
Electrical and Scientific Apparatus