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From: dupuy%amsterdam@COLUMBIA.EDU (Alexander Dupuy)
Newsgroups: mod.telecom
Subject: 3b20s and ESS
Message-ID: <8609200525.AA28681@ucbvax.Berkeley.EDU>
Date: Wed, 17-Sep-86 10:10:29 EDT
Article-I.D.: ucbvax.8609200525.AA28681
Posted: Wed Sep 17 10:10:29 1986
Date-Received: Sat, 20-Sep-86 05:24:06 EDT
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Reply-To: dupuy%amsterdam@columbia.edu (Alexander Dupuy)
Organization: Columbia University CS Department
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Approved: telecom@xx.lcs.mit.edu


    I learned some time ago that Western Electrics ESS's are actually just
3b20D (duplex cpu) machines, or vice versa, that 3b20s are just ESS's running
Unix.  It occurred to me to wonder what OS the ESS run.  Surely not System V?
Do they even run an OS at all, or are they just running a single application
program that does all the switching, call logging, etc.?  Perhaps someone out
there could enlighten me.

@alex