prov:value
| - With the system of FIG. 12 it is possible to provide video-on-demand and other interactive services utilizing the public switched telephone network in a manner shown, by way of example, in U.S. Pat. Nos. 4,995,078, issued Feb. 19, 1991; 4,890,320, issued Dec. 26, 1989; 4,506,387 issued Mar. 19, 1985; 4,792,849, issued Dec. 20, 1988; or as described in the article Advanced Video Response System,
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