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.