Phone lines used to be able to be powered by a back up generator from the phone company when it was normal that everyone had a a DC able phone. There are not enough of these in service to justify the cost. Does that mean that every landline station does not still have a back up generator? There is probably some still out there. But holy shit are we splitting fine hairs here. Of course I haven't had a landline that was DC power able in over 25 years, so maybe there is more stations with back up generator than I know.
Phone lines used to be able to be powered by a back up generator from the phone company when it was normal that everyone had a a DC able phone. There are not enough of these in service to justify the cost. Does that mean that every landline station does not still have a back up generator? There is probably some still out there. But holy shit are we splitting fine hairs here. Of course I haven't had a landline that was DC power able in over 25 years, so maybe there is more stations with back up generator than I know.