I see, thanks for your explanations :D
I don't see myself finding much X.25 hardware (I'm in Spain, "vintage" hardware is usually rare and expensive), but can totally set up a XOT link?once I get my hands on the 1921!
Then I can route another ancient protocol over TCP/IP?(already on HECnet and hope to get on HNET eventually as well, so the more networks the merrier), and will apply to join TELEBAHN.
Regards
Alice