Hi, Herebedragons and welcome to this forum !
To answer shortly to your first question, I do confirm that it is definitely possible to connect to Minitel services from IP. [will provide you details later on this]
We would be very happy to have some details about Videotex’s current state of art in UK, I was not yet aware about GLASTTY.COM (6502 port is really nice !) but was aware about some few other Prestel preservation tentatives (don’t remember links at the instant).
That is absolutely interesting, I’ve already found something about a V23 soft modem on Linux but never tried out it (no time !).
Just had a first quick look at your second link that is absolutely valuable as it seems to contains all needed informations to setup properly an Asterix PABX with an included softmodem.
About Minitel and IP (and a bit of history)
Historically, as you may know, Minitel were « created » to exclusively use V23 modems, only in « calling mode ». They had no support for dialing, users had to pick up their phone and dial a specific phone number to reach a kind of portal (teletel). This portal allowed you to enter a service name. Once entered, the portal was managing communication with the selected remote server (hosting the service) over X25 protocol on Transpac network, including billing in both ways. By the time, some more « powerfull » Minitel terminals were distributed (as main steps : M1b with V23 answer mode and ANSI/80 columns mode, M2 with DRCS, dial and ring detection functionality, Magis club with photo, card reader and TVR (V27ter) support).
This portal and Transpac X25 network were definitively switched off by june 2012, 9 years ago - end of the story …
In fact, not really. As you could dial manually a phone number, you could potentially reach, with a Minitel, any standard phone number. Some ‹ hackers › have home-built many BBS-like ‹ micro-servers › in the 80/90 that were running on all kinds of home computers with (mostly) only one acces at a time. Technically, nothing prevents this kind of servers to remain operationnal ‹ forever › after june 2012 - show must go on !
If I revert quickly back by the end of 90’s, Internet reached out and very fast analogic modems were in the wild. Some largely diffused Minitel emulators such as Hyperterminal (included in Windows until Vista (?)) and iTimtel (that still works well on W10) introduced the possibility to call a Minitel service from a regular PC using Telnet protocol - Nice, this is not a « real » terminal but anyone can display Minitel data from IP in emulation. I don’t know if many servers were offering this kind of access at the time ; currently I only know one server (operational on semi-ramdom schedule) that will accept a Telnet session what is called EDTA from Alexandre Montaron.
==> You can find the actual list of Minitel servers under « SERVICES MINITEL OUVERTS » on http://museeminitel.fr page.
==> There’s a montly virtual meeting, scheduled the first sunday of the month, by 8:30 PM FT on HACKER.