On 23/12/2020 23:18, Chris Green wrote:
> Deloptes  wrote:
>> Ahem A Rivet's Shot wrote:
>>
>>> When I had FTTH installed here the first thing they did (after
>>> erecting a couple of poles) was run copper to the house with a POTS
>>> service on it, then a week or so later another crew turned up and
>>> installed the fibre. The POTS service is active but never used. It would
>>> make a lot more sense if the fibre termination was powered by the 50V on
>>> the POTS line but it's powered by being plugged into the mains.
>>
>> May be I am understanding something different under POTS than you guys.
>>
>> Plain old telephone service, or plain ordinary telephone system, is a
>> retronym for voice-grade telephone service employing analog signal
>> transmission over copper loops (Wikipedia)
>>
>> Notice "analog signal".
>> Even if you have copper the last 50m or 3km - it does not mean it is POTS on
>> it.
>
> Since the phone hanging on the end it still an analogue device
> requiring 50v DC to ring then the last section *is* still POTS.
> `
>
Well not necessarily. VOIP can turn a digital channel into exactly what
a POTS phone expects.

I have an analogue PABX with one incoming POTS line and the other
plugged into the back of a router that has a VOIP circuit  connected to
a SIPGATE server.

They behave identically.

My fibre modem has a POTS port on it - instead of analogue POTS I COULD
have VOIP coming down the fibre. And plug a standard phone into that




--
"When a true genius appears in the world, you may know him by this sign,
that the dunces are all in confederacy against him."

Jonathan Swift.

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