From: Jason Stevens
it also appears that AOS was the router backbone of
the NSFNet once
they started to migrate off of the IMPs
Say what? IMPs were only every used in the ARPANET (and networks built by BBN
for private clients using that technology).
The first routers used in the NSFNET were things called Fuzzballs - PDP-11's
running software from Dave Mills, driving 56KB lines.
They eventually decided they needed to step up a level, and a consortium
involving IBM won, with IBM RT PC's running AIX driving T1 lines.
Noel