Got ISDN as a previous job as parttime helpdesk employee at an ISP. Together with the rise of numberous dail-up providers, including the legendary Superweb. It would allow free internet against a fix rate, not paying per minute, which was something new for the Netherlands. It would only allow one or two hours after it would disconnect you and you had to redial. Due their succes getting dialed in again could take quite long (too many users, not enough lines). So I wrote code/script and made changes to the Linux distribution to allow me to dial with my second line as part of my ISDN, starting ten minutes before I would get disconnected, and “transfer” the connection to the new connection when it was finally able to dial-in, hence having internet 24hours a day. Good times! Superweb didn’t exist very long…
it was shell-scripting (bash). And i'm not sure, but it i think i was mandrake linux distro. It was quite the work to get ISDN working properly, especially to use two lines at a time (one dialing, while the other one was in use).
