BBC Red Button it exits the service. Usage of these boxes dwindled further as technology developed. They used "original" technology and as such were not upgradable. Following each regional changeover to full digital TV broadcasting, the remaining units are no longer of use, as they do not support the "8K-mode" for DVB-T introduced across the UK as part of the digital switchover. BBC Red Button BBC Red Button is a branding used for digital interactive television services provided by the BBC, and broadcast in the United Kingdom. The services replaced Ceefax, the BBC's analogue teletext service. The service was launched in September 1999
Teletext economic Teletext system with 1971 technology. However, as low cost was essential to the project's long term success, this obstacle had to be overcome. Meanwhile, the General Post Office (GPO), whose telecommunications division later became British Telecom, had been researching a similar concept since the late 1960s, known as Viewdata. Unlike Teledata which was a one-way service carried in the existing TV signal, Viewdata was a two-way system using telephones. Since the Post Office owned the telephones, this was considered to be an excellent way to drive more customers to use the phones. In 1972 the BBC demonstrated their system,