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=-1.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE, URIBL_SBL_A autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 28649 invoked from network); 29 Jan 2021 14:38:18 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 29 Jan 2021 14:38:18 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 4DE079C8B7; Sat, 30 Jan 2021 00:38:17 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 2787A9C772; Sat, 30 Jan 2021 00:37:54 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="IU202LLz"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 16B939C772; Sat, 30 Jan 2021 00:37:52 +1000 (AEST) Received: from mail-qk1-f169.google.com (mail-qk1-f169.google.com [209.85.222.169]) by minnie.tuhs.org (Postfix) with ESMTPS id 2B1889C6CF for ; Sat, 30 Jan 2021 00:37:47 +1000 (AEST) Received: by mail-qk1-f169.google.com with SMTP id a7so8815785qkb.13 for ; Fri, 29 Jan 2021 06:37:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccc.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=9up0uRN1tOQZXG96bScHL+5ocMGlSyj5KQm28b1ASgg=; b=IU202LLzoOMzLxS+j63+8CrD4R3UWrKs0w7lweEsMabfkHVoDyB0P3YHFIzb/bFG/H kaeQnL801ev093BnDnEp9iflLIOtc/sGJnOjDNFE3UA54MPumcSpC22x9/CSQ2wKQekM lfGftN/F3i6ZRLkAPjyjSOm6STcIQybtSJ3ko= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=9up0uRN1tOQZXG96bScHL+5ocMGlSyj5KQm28b1ASgg=; b=V4ukvgz5nIbyz8ID1bFRoVNAKQFnLWkuBVCuqUpEd8icGRWSeBONZEotbleSCxi8T7 uH0WlZeBy17ZuAKJLYrcIbTiGdTdRwGd9nXsk4HhCxjvNTh4X0uTxZag2qcm2ysMWPUW GdCw6T2LLkUXt3zF6QMnT097UeCRvTXMzGq25CEt2WCsu3lAubtWBBR0ssJczyQGHayG kEwh34XTd+is8JTiWkFQbC/3YoY3CPjmIWyGuVTrJUkWjacEUIVko5qFUQ0wit29RCJP cJ2URZpjIaIcm//0UEAO87/tgpKN0nJh9gOg5LxuRlZw48L1we5dKZuFO2UDLiDo9Jaj 9V9Q== X-Gm-Message-State: AOAM531lX7TM0x4AI8SqjrdZ/3/cjiHf8szNj4sysPjaae6MY6sS4367 uy5X4+5f4b8ITxj9mbVrg5M+B2AfqxI89nGoeFf3akQu4qvE673f X-Google-Smtp-Source: ABdhPJxUSdOQEEY93PMkYq/hOd305GimuB++A+oqRx5YJKF4HMK4hn5Y1yT1CkBrEWWZN2hLgmaWmkAKsSmY6JYHaWA= X-Received: by 2002:a37:9d53:: with SMTP id g80mr4363517qke.307.1611931065740; Fri, 29 Jan 2021 06:37:45 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Clem Cole Date: Fri, 29 Jan 2021 09:37:19 -0500 Message-ID: To: Ronald Natalie Content-Type: multipart/alternative; boundary="00000000000093861805ba0af21b" Subject: Re: [TUHS] AT&T 3B1 - Emulation available X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --00000000000093861805ba0af21b Content-Type: text/plain; charset="UTF-8" On Fri, Jan 29, 2021 at 9:00 AM Ronald Natalie wrote: > Of course, this was in contrast with the 3B20 which you powered off by > turning a knob and then holding a button down for three seconds. Yep, > phone equipment. Those who ever dealt with things like real Western > Electric 303 "broadband" modems recognized that behavior. You commanded > loopback on them the same way. > Ron, pls don't forget the best 3B20 power-up feature, the pull starter in the middle (power) cabinet. Seriously there was a cable that pulled out of the middle power box (that looked like a small engine pull starter) that used to by-pass the batteries on a true cold boot because if it was not there the battery power up would surge the incoming load and trip the mains. IIRC the off button Ron describes does not completely power it off, it just shuts it down and you can take out cards safely, but the batteries and some subsystems are still active. True 'cold' power down is extremely difficult. It is designed to stay powered. As he said -- standard telco gear, 48V supplies, rack of truck batteries, *etc*. BTW: In the same vein, I once had a movie we all called the 'burning Alpha' when the 'telco special packaged' DEC 4300 from DEC CSS went through its fire testing in NJ. All equipment that was going to be in a CO or wiring center has to be tested to see how it burns in a fire (plastic/nylon parts in a computer rack can be nasty - and there are very tight specs). As I understand the spec, all flames have to stay inside the cabinets. One of the cute parts of the video is a sidebar, which is displaying the syslog messages during the fire. There was a desire, but I don't know if it was ever acted upon, to match the syslog messages to different activities in the fire. During the time when it is burning, there is a timer in the corner so they can note afterward at exactly which time, different things were incinerated. --00000000000093861805ba0af21b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Fri, Jan 29, 2021 at 9:00= AM Ronald Natalie <ron@ronnatalie= .com> wrote:
Of course, this was in contrast with the 3B20 which you powered off by =
turning a knob and then holding a button down for three seconds.=C2=A0 =C2= =A0Yep,
phone equipment.=C2=A0 =C2=A0Those who ever dealt with things like real Wes= tern
Electric 303 "broadband" modems recognized that behavior.=C2=A0 Y= ou commanded
loopback on them the same way.
Ron, pls don't = forget the best 3B20 power-up feature, the pull starter in the middle (powe= r) cabinet.=C2=A0 Seriously there was a cable that pulled out of the middle= power box (that looked like a small engine pull starter) that used to by-p= ass the batteries on a true cold boot because if it was not there the batte= ry power up would surge the incoming load and trip the mains.=C2=A0<= span class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-seri= f">IIRC the off button Ron describes does not completely power it off, it j= ust shuts it down and you can take out cards safely, but the batteries and = some subsystems are still active. True 'cold' power down=C2=A0is ex= tremely difficult.=C2=A0 =C2=A0It is designed to stay powered.
=

As he said -- standard telco gear, 48V s= upplies, rack of truck batteries, etc.

BTW: In the same vein, I once had a movie we all called t= he 'burning Alpha' when the 'telco special packaged' DEC 43= 00 from DEC CSS went through its fire testing in NJ.=C2=A0 =C2=A0All equipm= ent that was going to be in a CO or wiring center has to=C2=A0be tested to = see how it burns in a fire (plastic/nylon parts in a computer rack can be n= asty - and there are very tight specs).=C2=A0 =C2=A0As I understand the spe= c, all flames have to stay inside the cabinets.

One of= the cute parts of the video is a sidebar, which is displaying the syslog m= essages during the fire.=C2=A0 There was a desire, but I don't know if = it was ever acted upon, to match the syslog messages to different activitie= s in the fire.=C2=A0 =C2=A0During the time when it is=C2=A0burning, there i= s a timer in the corner so they can note afterward at exactly which time, d= ifferent things were incinerated.

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