Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!husc6!cmcl2!rutgers!sri-spam!ames!ptsfa!ihnp4!ihlpa!kai
From: kai@ihlpa.ATT.COM (Irwin)
Newsgroups: comp.unix.questions
Subject: Re: real-time Unix Systems
Message-ID: <5210@ihlpa.ATT.COM>
Date: Mon, 24-Aug-87 14:17:05 EDT
Article-I.D.: ihlpa.5210
Posted: Mon Aug 24 14:17:05 1987
Date-Received: Tue, 25-Aug-87 05:44:11 EDT
References: <402@hubcap.UUCP>
Organization: AT&T Bell Laboratories - Naperville, Illinois
Lines: 27
Summary: UNIX rtr

In article <3138> rick@leadsv.uucp (Rick Schneider) writes:
> 
> Real-time and Unix are ... mutually exclusive terms! Unix is a time sharing
> system and in no stretch of the imagination can be "real-time".

Unix rtr (formally DMERT) is a realtime unix system designed to run on
a 3B20 Duplex processor. It is a telco controller and has been in use
since "Bell System" days. If you make a long distance call though AT&T
it is more than likely being routed by a real time Unix system, as well
as several million lines handled by the BOCS.

UNIX is regesterd trade mark of AT&T

AT&T stands for American Telephone and Telegraph

telephone switches REQUIRE real time operating systems

given the above three statments (all common knowlege in the industry, or at
least to 90% of the users of the net) you can pretty much assume there is
a real time unix somewhere within AT&T, Think Rick!


Ken A. Irwin
AT&T Bell Labs, Naperville (you know the place were they develop real time unix
                            telephone switches?)
IHP 1A332
(312) 416-4485