For the ARPANET in 1969, the BBN Interface Message Processor (IMP) did the packet routing. (It's another cool artifact of history in the back room, awaiting installation in the new Computer History Museum exhibition hall.) The Honeywell 516 minicom .Have a Great Day and Keep Pinning. If you want to work with a Great Company, with Awesome Residual Income, and support, check out this Company. http://www.pureleverage.com/launch/9?id=JCPete