On Nov 14, 5:36*pm, Jon Elson wrote:
micky wrote:
But what about FIOS. *If there is a power failure at the exchange, do
they all have generators? * Are there amps or something on phone poles
between the telephone exchange and my house that depend on a source of
power that's neither the exchange or my house?

There is no "exchange" anymore, in the way there used to be these
central offices with a #5 ESS or whatever. *It is all moving to ATM
backbone, which is essentially an internet backbone. *They put
RT's in the neighborhood that are hooked to a fiber, and branch out
copper cable to the neighborhood. *So, the switches are several hundred to
a thousand or so subscriber lines, and distributed all over the landscape,
instead of one building per town. *If you drive around, you'll see these
boxes all over the place. *There are usually 3 boxes, the RT unit itself,
a power entry module with an electric meter on it, and a wire cabinet.

We have Charter cable here as the only alternative to DSL (which doesn't
work well in our region due to the crappy phone cables) and they have
somewhere around 8 hours of batteries in each box, which serves a couple
blocks. *When they have an extended outage, you see them bring out a
little gas generator to each pole with the Charter Pipeline box. *Must
be a big pain to set up all those generators.

I can't answer to FIOS, but I'm sure there have to be neighborhood
concentrators, as they can't possibly run miles of fiber to EACH residence.
Fiber has insane capacity, so they can concentrate traffic for hundreds
of high-speed service customers onto one fiber. *And, I'm sure those
concentrators only have so much backup battery capacity.

Jon

Cable has battery powered boxes too.

I had some trees profesionally trimed, I could of died that day The
tree guy brought down a 15,000 volt main distribution line and knocked
out power for miles. had nice explosion One neighbor had no brains
and attempted to drive over the downed line so she could park her car
in her garage. Neighbors complained the outage messed up their dinner.
cable billed the tree trimers insurance for 15 grand since their main
hub was across the street. they had 50 trucks roll each to power one
amplifier repeater. the tree guys knocked over my pole light which
broke the underground power line. the whole mess took many hours to
correct, there was a burn mark in the asphalt street till it was
repaved. I stiffed the tree trimers for part of their bill for the
damage to my home....

I was going to direct traffic and would of been standing right where
that power line fell. no more bob.

Up till then I always wanted to see a high voltage short, after that I
never wanted to see one again