Martin Brown wrote:
[snip]
> My installation is complete and is non-standard.
>
> The original copper line was left in place and still works just as
> before (but no longer has an ADSL signal on it). The new fibre drop line
> was run from a different pole to a different gable end on the house,
> drops to ground level and then goes around the house to a small grey
> junction box with the fibre splice inside and then back up to my office.
So in due course (2025 or later) the copper pair with the analog phone
(POTS) will stop working
> What surprised me slightly is that the fibre drop line is a figure of 8
> shape and includes a copper line pair as well as the fibre.
I wonder whether anybody can explain this?
> I have no
> wish to lose my POTS phone line - mains supply is too unreliable here.
> And Northern Powergrid are very slow to fix faults.
... as we have seen in the news recently. The POTS phone and
2G/3G/4G/5G mobile services will work for only as long as their battery
backups survive, which could be as little as an hour. Ordinarily the
mains supply to these facilities will be restored after an hour or less,
and if the power failure is very local probably the supply people will
bring a generator to keep these services alive if the repair is expected
to take a significant time.
The recent storm Arwen caused so much damage that I imagine it was clear
to the engineers on the ground that it would be many days if not weeks
before power would be restored to some areas. There was a clear
opportunity for management to bring in generators from unaffected areas.
The fact that management did not acknowlege the severity of the damage
is likely to be an ongoing problem; it is part of the curent political
and business mindset.
I think it will be important for small remote communities to take
control of this themselves, by having (or knowing where to borrow at
short notice) suitable generators; and encouraging informal social
support so that elderly or disadvantaged neighbours are helped, possibly
by taking them to a hotel unaffected by the power loss.
It's clear that even people with wood-burning stoves struggled without
electricity.
> The fibre modem is on the inside of the wall and has an optical input
> with a small length of fibre and just one 1G ethernet output.
>
> The router is BT's standard offering and has both a WAN input and an
> ADSL input, USB and a phone sockets. Minor snag is that in this mode I
> only have 3 superfast ethernet links in the office but it works OK.
Both the fibre modem and the BT router could be built with itegrated
rechargeable batteries, just as are mobile phones. These would at least
allow a few hours service, and in normal mains failure conditions would
be sufficient.
> I have yet to explore what things can be plugged into its USB socket and
> be made available over the network.
Probably nothing. It might function as a USB modem (like we used to
have in the early days of dial-up).
The phone sockets might function with BT's VOIP service once their POTS
service is discontinued in 2025. But their router might well not allow
the user to configure its VoIP setting to work with a third party VoIP
service such as Voipfone.
--
Graham J