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"Butt" 'phone
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26th May 2019, 1:18 pm
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Refugee
Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,554
Re: "Butt" 'phone
The DTMF chips have lead outs for 16 keys and not all are connected on domestic phones.
The guy reckoned that one of the extra keys could activate call back even if the calling number was witheld.
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