I have found some old files on my Amiga harddisk saved in presetel format. I have used an Amiga program called PrestelView v3.3 to view it, and IrfanView on PC side for capture it in JPG format.
The original screenshots (videotel format) are made by me in 1993.
The Philips NMS-3000 and 4000 are two video terminals dedicated to the Italian Videotel network, a precursor to the Internet which enabled each Italian family to access large databases as well as sending messages to one another.
The Commodore 6499 is a modem made by Celint for Commodore in Italy. It was able to connect the Commodore 64 with Sip Videotel. Sip Videotel (now Telecom Italia) was unique telephone company in Italy that provided a sort of BBS with teletext.
The modem could transmit at 300/300 baud on BBSs, and 1200/75 baud on Videotel/Minitel.
The Minitel (Videotel) was a Videotex online service accessible through the telephone lines, and is considered one of the world’s most successful pre-World Wide Web online services.
It was launched in France in 1982 by the PTT (Poste, Téléphone et Télécommunications; divided since 1991 between France Télécom and La Poste). From its early days, users could make online purchases, make train reservations, check stock prices, search the telephone directory, and chat in a similar way to that now made possible by the Internet.
source: wikipedia linux terminal