RE: Interesting17 Aug 2021 07:55
I wonder …
“Besides landline phones, lots of systems currently rely on the PSTN, including:
home burglar alarms and security systems
public traffic lights
cash machines
railway signals
motorway signs
And they will all have to switch to fully digital alternatives.
"All of these services are dependent on the voltage supplied by the PSTN - and all will need local batteries in addition to an internet connection, once the network closes, with some requiring more complex solutions," the Crown Commercial Service notes in an article published online last year.
A Transport for London spokesman, for example, tells BBC News 1,000 of its 6,400 sets of traffic lights currently monitors remotely using PSTN technology - and it has set up a working group exploring options for replacement telecoms services.”