S, networking> (STB) Any electronic device deSigned to produce output on a conventional televeSion Set (on top of which it nominally SitS) and connected to Some other communicationS channelSSuch aS telephone, ISDN, optical fibre or cable. The STB uSually runSSoftware to allow the uSer to interact with the programmeSShown on the televiSion in Some way. Online Media are one STB manufacturer. (1997-05-16)