Many exchanges are already being moved to "stop sell".
This means that,
although your landline may currently be active,
any changes to your service,
migrations to other suppliers,
or switching to other products will be limited to the options that are to be supported long - term.Effectively,
you would be unable to place any new order
for an analogue line or any service dependent on a landline,
and would only be able to pick from single order options such as FTTP or SoGEA.