Teletext a plug in circuit board. It took another decade before the decoders became a standard feature on almost all sets with a screen size above 15 inches (teletext is still usually only an option for smaller "portable" sets). From the mid-1980s both Ceefax and ORACLE were broadcasting several hundred pages on every channel, slowly changing them throughout the day. The "Broadcast Teletext Specification" was published in September 1976 jointly by the IBA, the BBC and the British Radio Equipment Manufacturers' Association. The new standard also made the term "teletext" generic, describing any such system. The standard was internationalised as World
Teletext Ltd. 400-499 (which replaced pages 300-399 as Channel 4's page space). However on 30 October 2008, Teletext on 4 on Channel 104 closed and replaced in December 2008 by 1-2-1 Dating. using Teletext on 4's old channel number. Teletext Ltd. Teletext Ltd was the provider of teletext and digital interactive services for ITV, Channel 4 and Five in the United Kingdom. Teletext Ltd currently runs Teletext Holidays and Teletext Cars only. "Teletext Ltd" started providing teletext services for ITV and Channel 4 on 1 January 1993, replacing the previous ORACLE service which had lost the franchise. The company is now owned