[TUHS] A Talk on Early Unix

Andrew Warkentin andreww591 at gmail.com
Thu Jun 30 20:30:15 AEST 2016


On 6/30/16, arnold at skeeve.com <arnold at skeeve.com> wrote:
>> 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
>


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.


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