Comment by iwanttocomment

Had ISDN in the mid-90s back when I worked for an ISP. Wasn't expensive from my telco, 40 1996 dollars a month and the cost of a Motorola BitSURFR Pro. Got dial-up bonding working on the ISP side. It could "ring through" one of the B-channels when a call came in and stay connected on the other. A wonderful time.