DrGuile,
Not only did 99% of the BBS's in Port Charlotte have only one line, there were a lot that operated only at set hours (here in Cleveland, too)! Look for an old Wine Cellar BBS List and see how many of them say things like "10PM-6AM" or "Weekends only". There was even one where you had to make your modem dial some extra digits after his phone picked up because he ran his phone, fax and BBS all off of one line and his system routed the call to the proper place depending on which code you dialed after it picked up.
The big BBS here in Cleveland was FlipFlop. The dude ran it totally out of his own pocket and it had NINE nodes! One day he just shut everything down, though
SpaceAce