I had one for work as well in the late 90s. The other (often overlooked) benefit that ISDN provided was 24/7 connectivity in an age of dialup. Oh and you coul

I had one for work as well in the late 90s. The other (often overlooked) benefit that ISDN provided was 24/7 connectivity in an age of dialup. Oh and you could spoof your outgoing phone number for caller ID ]:D