On 24/12/2020 21:26, David Higton wrote:
> 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
>
That is a fair comment. I hadn't though of that. 20mA is all you can get
off a POTS.

--
Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.

Ayn Rand.

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