Dave Liquorice wrote:
On Wed, 5 Aug 2020 15:34:33 +0100, Andy Burns wrote:

Even nicer would be if the ONT (or whatever they call it) could accept
power over ethernet, instead of needing a wallwart,

+1

What does the ONT live on?

12V. None of the OR ones (Huawei, Nokia) seem to support PoE, sadly.

You can get fixed voltage, 15 W output, PoE spliters at 5 or 12 V for
about a tenner now. I've got a 5 V output one for powering a Pi III via
PoE, this was going to have and SDR dongle attached and shoved some where
out of the way. Trouble is the PoE splitter produces a lot of
interference. Not yet chased that down to actual RF radiation and/or a
horrible amount of noise on the supply.

That's not a bad idea. I'm sure you can get better splitters. A PoE UPS
might be useful in terms of keeping router, switches and IP phones alive.

I hope routers will get better at power management - for example, detect
that the power has gone out and fall back to a less power intensive mode of
operation to make the battery last longer, perhaps by dropping rates on wifi
or ethernet and throttling CPU.

Theo