Comment by philxor

I worked for Exec PC internet which evolved from the BBS which was the largest in the US afaik. It ran on somewhat custom PCs where there were I think four nodes per board on bread racks. No cases. Custom software. That BBS was over 250 lines at one point. I remember hearing stories the room with the modems, a lot of Couriers near the end, was so hot they would have to replace dead ones every week.