A CDE Definition
(1) A proposed satellite communications system from AT&T for interactive, multimedia applications that never came to fruition.
(2) A modem technology for simultaneous voice and data transmission from AT&T. See SVD.
(Simultaneous Voice and Data) The concurrent transmission of voice and data by modem over a single analog telephone line. The first SVD technologies on the market were Multi-Tech's MSP, Radish's VoiceView, AT&T's VoiceSpan and the all-digital DSVD, endorsed by Intel, Hayes and others. See VoiceView.
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