[Cletus.D.Yokel]

I helped develop the business end of DECnet, utilizing the RS 2780(?) family of boards in 1982.
Slide it in, pop-out the flimsy phone jack, connect to the 7200baud modem and start dialing.
Thrilling days, bruh.

[Snowybear]

It really was superior to TCP/IP. By far.

-SB