I am going to disassemble an old POTS phone and use parts
of its circuits to build something like this:
"SPEAKER+"--------->
"SPEAKER-"----------> "DIY exchange" <-----------------------"RJ11 green"---->
"MIC +"<--------------> "----circuit----" <---------------------->"RJ11 red"-------
"MIC -"<--------------->
I am going to completely ignore the 110V ringtone of course and DTMF circuit,
everything that isn't necessary to connect the POTS phone to a sound card.
I don't even know if it is possible but will try. It will take a while though.
But Question: is "Should I even bother? Is such a thing feasible?"
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howto make diy minature pots exchange station emulator