There was a clumsy older web site, and a modem line that hasn't worked for years.
After some heavy and still-ongoing remodeling, I invite you to visit Back to the Future, the only remaining x/84 BBS (as far as I know), and currently an exercise in connectivity.
Want to relive your mainframe programming days? Or just prefer EBCDIC for some strange reason? Direct your TN3270 to bttfbbs.com:3270 (or TLS on port 992) This terminal connection is still a work in progress but it's going pretty well. I might rework the menus to give it more of an ISPF look. Or MUSIC/SP, which was a personal favorite.
Possibly coming soon? fax interface, other retro clients