In message 
          Ahem A Rivet's Shot  wrote:

>On Thu, 24 Dec 2020 08:10:00 +1300
>nospam.Kurt.Weiske@f1.n770.z16210.fidonet.org (Kurt Weiske) wrote:
>
>>  There's a 48vDC current running across the copper pair in a POTS
>>  line. It's called talk battery or loop current. I think the original
>>  poster was talking about powering the fiber terminator over it.
>
> I was suggesting that since they insisted on running both (I only
>wanted the fibre) it would make sense to power the fibre terminator from
>the loop current and give the fibre the same kind of reliability that the
>copper has.

No chance.  A POTS phone on hook (which most are, most of the time)
consumes no power.  A fibre terminator uses more power than even an
off-hook POTS phone.  The entire exchange's power supply and backup
battery would need to be drastically redimensioned.  And the company
would charge you for the power you consumed, plus the huge capital
cost.

David

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