Interactive Teletext

A two-way transmission of teletext using a cable television network to transmit information to the viewer, and a simultaneous telephone-line connection to transmit information from the user. Essentially, the viewer sees text and graphics on the television screen, and the keypad on a telephone is used to control the display of that text and graphics, as well as respond to its content (such as in the ordering of products and services). See also Teletext. Interactive teletext is often abbreviated i.txt, and is also known as interactive videotext.

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