Bumping because it's basically been re-written; we're on 2.0 now, and it has some big improvements:
Better re-connect logic
Multiple connections
pcap capture support for the vTunnel bridge
with a wireshark plugin for dissecting Minitel packets
Additionally, this post will contain a list of known public relays:
lain.church, port 4096
luna.nosafe.space, port 4096 (thanks @Adorable-Catgirl )