Re: Redundancy/Survival

From	TheLastSysop <thelastsysop@dev.null>
Newsgroups	comp.os.linux.misc
Subject	Re: Redundancy/Survival
Date	2026-06-02 18:25 +0000
Organization	The Null Device Restoration Society
Message-ID	<333de5e6978df739348e@dev.null> (permalink)
References	(9 earlier) <10vitqf$1us3j$1@dont-email.me> <j2t0fmxplt.ln2@Telcontar.valinor> <10vkj3a$2dpu1$1@dont-email.me> <2i61fmxegm.ln2@Telcontar.valinor> <10vn6ve$33tsa$5@dont-email.me>

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>On Tue, 2 Jun 2026 18:21:34 -0000 (UTC), Rich <rich@example.invalid> wrote:
>Carlos E.R. <robin_listas@es.invalid> wrote:
>> On 2026-06-01 20:30, Rich wrote:
>>> Carlos E.R. <robin_listas@es.invalid> wrote:
>>>> On 2026-06-01 05:20, Rich wrote:
>>>>> c186282 <c186282@nnada.net> wrote:
>>>>>>     I've EXPERIENCED tower networks Going DOWN ...  they have maybe
>>>>>>     three days worth of power backup.  Then it's 1826 again.
>>>>>>
>>>>>>     But copper KEEPS WORKING. Simple and sure.
>>>>>
>>>>> ...
>>>>>
>>>>> If you applied the identical regulations to fiber, it too would
>>>>> (and could) be just as much a "it KEEPS WORKING" system as the old
>>>>> copper POTS system was.  All the fiber would need to be all but
>>>>> identical is for a pair of power conductors (yes copper wires,
>>>>> since glass happens to be an electrical insulator) to be run along
>>>>> with each bundle, and for the demarc terminals in each home (plus
>>>>> one of the phone handsets) to be powered from the fiber bundle
>>>>> power conductors.
>>>>
>>>> That would not happen.
>>>
>>> Agreed.  I highly doubt such would ever occur to the regulators as
>>> well.  My point is, it would be /possible/ for the fiber bundle to
>>> carry a single copper pair used only to provide the small power
>>> necessary to power the end point just like old style analog POTS
>>> phones were powered by the line from the switch.
>>
>> Thing is, they would have to power the ONT or the router, and do so
>> for all customers the full time, even if they are not using their
>> phones actively at the moment.  That is no small power, it can be
>> 2..3 amps at 12 volts per client (based on the ratings of the power
>> wall wart of my router.
>
>Don't look at the label on the wart as the consumption of the device.
>The wart's labels are what it is rated to output without lighting your
>house on fire.  If you measure the actual draw of the connected
>devices, you'll often find it is much less than the wart's max 2..3
>amps.  Often substantially less.
>
>In any case, that is also fixable.  Run the power conductors at a
>higher voltage (48v -- the POE voltage) or even whatever your mains
>voltage is (220 in Spain?).  Then the current in the big cable is much
>reduced, even with every end point 'running' and drawing power.  It can
>be done, but it is also very much a not likely to be done thing as
>well.
>
>Of course this would likely mean fewer "end points" on each arm from
>the local switch, as no matter how high one runs the voltage on the
>power pair, there is a limit of how many demarc's it can power at once.
>
>Alternately, each "fiber line" could include a pair of power conductors
>to power that one end-point (again likely running a higher voltage to
>cover for resistive losses in the long wires).
>
>But also, just an 'imagined possibility'.  No regulator today would
>think of trying to impose any such requirement anyway.

For a home setup the useful first step is to measure the real load, not size
from the wall-wart label.  A cheap plug-in wattmeter on the AC side, or an
inline DC meter if the router/ONT uses a barrel connector, will usually show a
much smaller steady draw than the adapter's maximum rating.

If the goal is keeping voice or basic connectivity alive through short power
cuts, a small DC UPS or a modest AC UPS sized from that measured load is a lot
simpler than trying to make the access network provide line power.  Then check
whether the ONT, router and any ATA/DECT base all need backup; missing one box
in that chain is the usual surprise.

-- 
TheLastSysop <thelastsysop@dev.null>
"I survived the great rm -rf / rehearsal and all I got was this .signature."

Thread

Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 02:21 -0400
  Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-26 08:46 +0200
    Re: Redundancy/Survival Marco Moock <mm@dorfdsl.de> - 2026-05-26 09:49 +0200
      Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 04:47 -0400
      Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-26 11:25 +0200
      Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-05-26 09:53 +0000
    Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 04:38 -0400
      Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-26 11:35 +0200
      Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-05-26 22:09 +0000
        Re: Redundancy/Survival John Ames <commodorejohn@gmail.com> - 2026-05-26 16:17 -0700
          Re: Redundancy/Survival Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-05-27 00:02 +0000
            Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-27 00:11 -0400
              Re: Redundancy/Survival Marco Moock <mm@dorfdsl.de> - 2026-05-28 10:32 +0200
            Re: Redundancy/Survival Nuno Silva <nunojsilva@invalid.invalid> - 2026-05-27 08:41 +0100
              Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-27 11:04 +0200
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 03:31 -0400
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-28 09:18 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-28 13:42 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-28 15:01 +0100
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 21:34 -0400
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-29 11:07 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-29 12:55 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-29 12:14 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-29 13:36 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-29 13:26 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-29 19:36 +0200
                Re: Redundancy/Survival Richard Kettlewell <invalid@invalid.invalid> - 2026-05-29 17:24 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-29 19:37 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-29 19:36 +0100
                Re: Redundancy/Survival Richard Kettlewell <invalid@invalid.invalid> - 2026-05-29 22:34 +0100
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-30 04:29 -0400
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-30 13:09 +0200
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-30 23:29 -0400
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-05-31 21:45 -0400
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 12:15 +0200
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-01 18:53 -0400
                Re: Redundancy/Survival Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-06-02 01:46 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-06-02 03:01 -0400
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-02 18:12 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 10:16 +0200
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-02 18:09 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 21:26 +0200
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-06-02 02:58 -0400
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-06-02 11:11 +0100
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-05-29 04:30 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-29 01:34 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 06:36 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-31 00:38 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-05-31 05:09 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-31 03:10 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-05-31 07:14 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-06-01 00:49 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-01 04:57 +0000
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 03:20 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 19:45 +0200
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 18:30 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 22:27 +0200
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 10:49 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 13:16 +0200
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-02 18:35 +0000
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-02 18:21 +0000
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 18:25 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 21:36 +0200
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-01 19:00 -0400
                Re: Redundancy/Survival Robert Riches <spamtrap42@jacob21819.net> - 2026-06-02 17:44 +0000
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 17:54 +0000
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-02 16:57 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 21:02 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-29 02:17 -0400
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 03:50 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-06-01 01:07 -0400
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 12:47 +0200
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 17:36 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 22:33 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-06-01 12:26 +0100
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 17:31 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 22:49 +0200
                Re: Redundancy/Survival not@telling.you.invalid (Computer Nerd Kev) - 2026-05-30 09:09 +1000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-30 13:17 +0200
                Re: Redundancy/Survival not@telling.you.invalid (Computer Nerd Kev) - 2026-05-31 07:33 +1000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-31 00:14 -0400
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-31 12:09 +0100
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-06-01 00:51 -0400
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-06-01 12:28 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-31 12:58 +0200
              Re: Redundancy/Survival Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-05-27 20:51 +0000
                Re: Redundancy/Survival John Ames <commodorejohn@gmail.com> - 2026-05-27 14:02 -0700
                Re: Redundancy/Survival not@telling.you.invalid (Computer Nerd Kev) - 2026-05-28 08:54 +1000
                Re: Redundancy/Survival Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-05-28 05:04 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 03:54 -0400
                Re: Redundancy/Survival Andy Burns <usenet@andyburns.uk> - 2026-05-28 09:15 +0100
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 12:29 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-28 13:45 +0200
                Re: Redundancy/Survival Robert Riches <spamtrap42@jacob21819.net> - 2026-05-29 02:50 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-29 01:17 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 06:48 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-30 04:25 -0400
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-30 13:20 +0200
                Re: Redundancy/Survival Robert Riches <spamtrap42@jacob21819.net> - 2026-05-30 14:16 +0000
                Re: Redundancy/Survival Robert Riches <spamtrap42@jacob21819.net> - 2026-05-30 04:00 +0000
          Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 23:41 -0400
            Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-27 14:09 +0100
              Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 03:51 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-28 17:08 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 22:14 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 04:41 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-29 01:53 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 06:32 +0000
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 13:19 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 22:52 +0200
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 13:08 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 22:55 +0200
                Re: Redundancy/Survival Nuno Silva <nunojsilva@invalid.invalid> - 2026-06-02 10:39 +0100
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 13:21 +0200
        Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 22:39 -0400
          Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-27 14:10 +0100
            Re: Redundancy/Survival not@telling.you.invalid (Computer Nerd Kev) - 2026-05-28 09:05 +1000
              Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-28 08:19 +0100
            Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 03:52 -0400
              Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-05-28 09:20 +0100
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-28 20:34 -0400
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-05-28 21:07 -0400
                Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 13:40 +0000
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-01 19:12 -0400
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 10:28 +0200
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-02 12:15 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 16:19 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 18:30 +0200
                Re: Redundancy/Survival The Natural Philosopher <tnp@invalid.invalid> - 2026-06-02 18:29 +0100
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-02 16:49 -0400
                Re: Redundancy/Survival Marco Moock <mm@dorfdsl.de> - 2026-06-02 17:38 +0200
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 15:48 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 17:55 +0200
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 16:03 +0000
                Re: Redundancy/Survival InterLinked <usenet@phreaknet.org> - 2026-06-02 12:22 -0400
                Re: Redundancy/Survival TheLastSysop <thelastsysop@dev.null> - 2026-06-02 16:36 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-02 18:39 +0200
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 01:21 +0000
                Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-29 02:08 -0400
                Re: Redundancy/Survival rbowman <bowman@montana.com> - 2026-05-29 06:41 +0000
              Re: Redundancy/Survival Rich <rich@example.invalid> - 2026-06-01 13:23 +0000
                Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-06-01 23:00 +0200
  Re: Redundancy/Survival Marco Moock <mm@dorfdsl.de> - 2026-05-26 09:44 +0200
    Re: Redundancy/Survival c186282 <c186282@nnada.net> - 2026-05-26 04:45 -0400
    Re: Redundancy/Survival "Carlos E.R." <robin_listas@es.invalid> - 2026-05-26 11:38 +0200
  Re: Redundancy/Survival "Worst Case" <fritz@spamexpire-202605.rodent.frell.theremailer.net> - 2026-05-26 17:21 +0200

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