A piece of equipment that employs text-to-speech software and plugs into televisions, reading the text on-screen via a 'voice synthesiser' for the visually impaired. Looks quite old, though. It will be interesting to see whether this is still used by anyone - there are certainly similar pieces of software that do the same thing on PCs.
Teletext Media Site
The bridge between the Internet and traditional Teletext formats? Online info on how to advertise on Teletext.
A disgruntled Teletext fan laments the demise of teletext
On the Digitalspy forums. Plus a lengthy discussion on the pros and cons of the Digital Switchover.