Reminded me of late 80's when I had an Amstrad PPC640DD which had a built in 2400 baud modem. Was in an Hotel and spent a couple of hours on a BBS...£50 charges for phone when checking out for those two hours usage.

Soon learned some tricks and list of outdials (ICL had some nice ones as did IBM, if you had the number, that was all you needed). Though doubt anybody wardials thesedays.