I had an ISDN line in my home that, somehow, had a direct connection to the intranet of my employer at the time, Infoseek. Not sure how this was all arranged, but it was just like having a very long wire that went to my employer. Someone in Infoseek's IT department set it up.

Sometime after, DSL replaced this. And I used some form of DSL until, eventually, cable modems became cheap and fast and available in my area.