In case anyone wants to dispute VagabundoP's chronology:
The Internet was invented in 1973 and testing began of the new protocols in 1975.
Teletext, in the form of Ceefax, was pioneered by the BBC in 1972.
So yes, Teletext was indeed pre-Internet. (-:
And in Ireland home internet dial up didn't really appear until the mid 90's outside of very dedicated ISDN setups.