From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 19765 invoked from network); 14 Mar 2023 04:22:57 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 14 Mar 2023 04:22:57 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id EE6DF41620; Tue, 14 Mar 2023 14:22:52 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuhs.org; s=dkim; t=1678767773; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:list-id:list-help: list-owner:list-unsubscribe:list-subscribe:list-post; bh=8vzBAOQQShbsuDv68/0pvecn0HNNaf0O9y0n0/oRU1Q=; b=jwKnUcIGaULmroRMSVp99vRFWrSXSiUxGMtIo0AsFwZFSzpGJsLAENpjGxHvIVUrnuEoXL 62mBE7nxda8GR/nkKLsnP/qIHtKqxce0fhsYkNTTfdJXUI8oi5Zo7F3uEa041s2w5BaCzK nU7EBwB435STGR8odwFWI3qqT33dhTc= Received: from mail-4319.protonmail.ch (mail-4319.protonmail.ch [185.70.43.19]) by minnie.tuhs.org (Postfix) with ESMTPS id 6CF3441614 for ; Tue, 14 Mar 2023 14:22:41 +1000 (AEST) Date: Tue, 14 Mar 2023 04:22:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1678767759; x=1679026959; bh=8vzBAOQQShbsuDv68/0pvecn0HNNaf0O9y0n0/oRU1Q=; h=Date:To:From:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=osJjPdPBBIv7gw17/2Fgl/OwTjPtcQTWE54GGOUmVbuwmMEFbHNICMC1JcG2LxNv3 GbtDBDY7qaBCKmOwSkvhgnSAmJgMokZDUKnIloCAW+fj5QdmFu5xEuLGphG7PLx2Xm 8dMRzFbEL0lZwWjQUFF6kU1gfK4lHRJ37Wauk6O6hAHtC8X/G7ZNUOCtZfOq7C7TCi TqQrbofYeR+UNT6Vb0lPkgXxnfjayCz1lIPENKUOA8fmg6dy/MC3XIfyRbcacYO8Tp 07gX3Ob0qBCSOdT9UNnzf9kiBqMxThLacUrNyYoYaItoIbR5ySFuW5ewyG9ia89Rrk bXh1ISGRM70Mw== To: The Eunuchs Hysterical Society Message-ID: Feedback-ID: 35591162:user:proton MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: BYMOLUWLEN6IIEM7WMSBLBGUTUFTEGOL X-Message-ID-Hash: BYMOLUWLEN6IIEM7WMSBLBGUTUFTEGOL X-MailFrom: segaloco@protonmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] 5ESS Operating Systems Today? List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: segaloco via TUHS Reply-To: segaloco Starting this in TUHS due to UNIX relevance, but with the heavy disclaimer = this should quickly diverge to COFF if it drifts into foreign waters. I've gotten to reading about 5ESS lately, and it seems there are many in us= e still today. I found myself wondering what the evolution has looked like= as far as computing hardware and operating systems involved. DMERT ran on= the 3B-20D supporting the 5ESS systems in the early 80s, at the same time = that UNIX 4.x was making rounds on the 3B-20S. A 5ESS manual from 2001[1] mentions UNIX RTR (Real-Time Reliable) of the DM= ERT lineage. Wikipedia[2] suggests 5ESS is still very much in use and ment= ions more modern systems like VCDX; its "Sun Microsystems SPARC workstation= runs the UNIX-based Solaris (operating system) that executes a 3B20/21D pr= ocessor MERT OS emulation system." This sounds like the Lucent 3B20 emulat= or. Is there still a line of UNIX RTR/DMERT being maintained to this day? Or a= re users left with other avenues to keep their hardware updated if necessar= y? [1] - https://documentation.nokia.com/cgi-bin/dbaccessfilename.cgi/23560051= 0_V1_5ESS%20Switc [2] - https://en.wikipedia.org/wiki/5ESS_Switching_System - Matt G.