I've been in several commercial buildings with Comcast phones for their
elevators. Coming out of just a regular cable modem, no Battery
backup. One of them had a bad circuit breaker, and our equipment was on
the same circuit as that modem. Building had no clue that their
elevator phones were down.
On 5/2/2025 5:03 PM, Chuck McCown wrote:
Used to be there were public utility regulations and FCC, I think
regulations that required 8 hour minimum for POTS.
*From:*AF [mailto:[email protected]] *On Behalf Of *Adam Moffett
*Sent:* Friday, May 2, 2025 9:57 AM
*To:* AnimalFarm Microwave Users Group <[email protected]>
*Subject:* Re: [AFMUG] UPS for Internet equipment
Not a requirement for most purposes, but there are certain things like
fire alarms, elevator phones, and other life-safety uses where
building code requires that any electronics which the phone line is
dependent on have so many hours of backup power….i think 8 hours.
When that code was written, the issue would have been PBX’s, but it
would apply to ATA’s as well. I used to tell people get a POTS line
for that and the telco has you covered. If they don’t listen to me
it’s not my fault. I wouldn’t provide the backup power for it because
then it would fall on me to maintain the batteries to keep them
compliant. They need to handle that themselves.
I’m referring to the building code in my own city, and i don’t know if
that’s their own rule or something adopted from ICC. It’s a sensible
rule regardless, and property owners should be doing that even if it
isnt a rule in their locality.
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------------------------------------------------------------------------
*From:*AF <[email protected]> on behalf of Steve Jones
<[email protected]>
*Sent:* Friday, May 2, 2025 1:10:38 AM
*To:* AnimalFarm Microwave Users Group <[email protected]>
*Subject:* Re: [AFMUG] UPS for Internet equipment
I thought there was some rule that you have to offer UPS if you sell
VOIP, youd think the market would be saturated with small power long
runners in this space
On Thu, May 1, 2025 at 7:35 PM Ken Hohhof <[email protected]> wrote:
Most people have phones, tablets and laptops that are battery
powered, as well as security cameras like Ring and Blink. But
unless they have a whole home generator, their Internet stops
working if their Internet equipment (router, modem, ONT, radio,
gateway, etc.) doesn’t have power.
Have any of you found a UPS that fits this use case?
Everybody wants to sell you an 800 VA battery backup with 30
minutes of runtime. It’s the old paradigm of powering your
desktop computer long enough to save your work and shut it down.
What we need is something that delivers 1/10 that much power for
10 times that long.
Yes, I realize a big part of the problem is the inefficiency of
DC/AC conversion especially at low power levels. And there have
occasionally been DC battery backups for network equipment,
usually for a specific model of CPE. But we are often faced with
a radio that wants 24-30 or 48-56 VDC, and a WiFi router that
wants 5 or 12 VDC.
If this was for our own use, I could build something with some DIN
rail electronics and a battery, but it wouldn’t be UL approved or
appropriate for a customer to use in their home.
People these days get alerted on their phone because their
doorbell camera is offline, and they call their ISP rather than
check for power outages. If they had a UPS for their Internet
equipment, they would get an alert that their POWER was off.
Ideally it would run for 8 hours which seems to be a typical
restoral time for power companies. But I guess even with a couple
hours they would at least know why their security camera is
offline. And if they are home they continue doing stuff online
for awhile and start planning where to go for public WiFi if the
power outage lasts longer than their battery runtime.
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