I was an early adopter of DECT mid-late 1990s paying well over £200 for one of the first to hit the market, model was BT divers 1010 iirc. In these days, it was supplied with an inline battery box that you could populate with AAs for operation during outage. I think you were encouraged, maybe even
required to do so, if there was no other phone that would work in power outage.
Nowadays, I almost totally dependent on DECTs with no battery backup. But I do have one fallback... My old 1970s vintage BT 706, at least as long as pulse dialling continues to work.
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