Re: PBX survives power cuts but not the power being switched off?!
Boombox, you haven't said whether you have subsequently reprogrammed the unit and whether it now manages to retain its programming during power down.
Have you? Does it?
If all the settings are still lost / defaulted try reprogramming just one parameter or the minimum which will give some observable effect, and then power it off for a short time / a long time. Does it consistently lose the programming after either of those intervals?
If it does, whatever used to retain the programming during power down is no longer doing that.
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