Do you get told when your line goes fibre? We have an alarm system that I’m told will not work when we get fibre.
By fibre do you mean Fiber to the premises (FTTP) or Fibre to the Cabinet (FTTC) Generally if fiber is being installed to the street cabinate, then usually there is some form of advertising locally. You can also look at your local exchange to see if there are any up grades to your street cab. If full fibre to the premises,then you might get a letter informing you of the fact. Regarding your alarm system. Who told you it might not work???
Incase of a power cut or your broadband is down (FTTP), the nurse call featurs won’t work. In the case of older people with either no mobile or weak indoor signal a back up phone can be used. Unfortunately this method is little use to those who wear call tags.
Things are starting to move on a little bit in this area with the use of e-sim devices, that connect to a central unit. Though if you lack or have weak mobile signal they aren’t much use.