30 Jun
2016
30 Jun
'16
4:30 p.m.
On 6/30/16, arnold(a)skeeve.com <arnold(a)skeeve.com> wrote:
AFAIK the later ESS switches include a 3B machine but it only handles
some administrative functions, with most of the the actual call
processing being performed in dedicated hardware.
For example, I
thought Unix was used at some point as the OS for some
of the ESS switches in AT&T, but now I think I was mistaken.
I think that your initial statement is correct. At Georgia Tech AT&T gave
us some 3B20s - vax size and larger, running System V, and I remember some
discussion that they were used inside AT&T as switches.
This, of course, is second hand information; perhaps some of the Bell Labs
alumni can verify for real.
Arnold