Digital DEC PDP 11/84 Systems, Lot of 5 in eBay

jim s jws at
Fri Jun 25 02:56:08 CDT 2010

I had heard of some of the ESS systems that used the PDP's, and not the 
3B's.  The seller appears to have really old CO equipment that has 
broken down, and the bits may not be related.  Much more interesting 
than a bunch of TIE switches, or such, but only just.


On 6/24/2010 11:55 PM, Brent Hilpert wrote:
> jim s wrote:
>> Looks like a 5ESS ate it, from the other material for sale in this lot.
> Knowing nothong about the 5ESS, other than recognising it as the name of a
> telephone switch, I looked it up.
> I found mention of 3B20 processors used in the 5ESS, but not of the 11/84.
> Where does the 84 fit, just out of curiousity (or were you just commenting on
> the other material and not meaning to imply any connection between the 84's and 5ESS)?

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