As I've remarked before, with an FTTN service it's advisable (probably
essential) to isolate the house POTS wiring from the cable carrying the NBN
VDSL2 signal. I don't know whether this is done by NBN Co. when a service is
connected, but it will otherwise normally require the paid services of an
electrician.
So what should be done regarding the household telephones, assuming there's
more than one? The options seem to be:
(a) Throw away the POTS 'phones. Buy a cordless system with the required
number of extensions and connect it to the modem's FXS port. This was iinet's
recommendation.
(b) Bring the POTS house wiring out near the modem and connect it to the FXS port, making
sure the REN ("ringer equivalence number") of the FXS port is >= the sum of the
RENs for all connected instruments. A POTS telephone normally has its REN shown on a label
under the instrument.
(c) Forget about handsets and use mobiles.
Does this sound reasonable? Are there any other options?
Is the average non-technical user supposed to have the knowledge to realise
what's involved and get it organised, and then be prepared to pay the extra
costs?
David L.
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