[TUHS] A Talk on Early Unix

Nemo cym224 at gmail.com
Fri Jul 1 00:11:50 AEST 2016


On 30 June 2016 at 06:30, Andrew Warkentin <andreww591 at gmail.com> wrote:
> 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.

I feel dated:  2ESS was just coming in and offices had Strowger
switches when I left that field. Wikipedia
(https://en.wikipedia.org/wiki/5ESS_Switching_System) claims that 5ESS
ran under UNIX-RTR.

N.


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