From: doug@cs.dartmouth.edu (Doug McIlroy)
Subject: [TUHS] Was 5ESS built on UNIX?
Date: Tue, 28 Feb 2017 16:12:45 -0500 [thread overview]
Message-ID: <201702282112.v1SLCjcp015051@coolidge.cs.Dartmouth.EDU> (raw)
As Corey said, administrative computers in switching centers
ran Unix, but the call-processing machines ran an unrelated
operating system. The Unix lab did influence that operating
system. Bob Morris instigated, and Joe Condon, Lee McMahon,
Ken Thompson and others built TPC (the phone company), a switching
system controlled by a PDP-11. This system actually ran the
phones in CS Research for several years. ESS5 adopted some
of TPC's architecture, though none of its code.
Doug
next reply other threads:[~2017-02-28 21:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-28 21:12 Doug McIlroy [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-03-12 16:35 Noel Chiappa
2017-03-12 19:35 ` Ronald Natalie
2017-03-01 4:20 Rudi Blom
2017-02-28 19:11 Nemo
2017-02-28 19:30 ` Corey Lindsly
2017-03-10 8:04 ` Erik E. Fair
2017-03-12 16:21 ` Nemo
2017-02-28 19:35 ` Nelson H. F. Beebe
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