Step 2Have a look around
If you have a phone that had an intercom- there will be a microphone and speaker wired into the cicuit board.. you can snip and strip these wires and go onto the next step.
If you didnt have an intercom.. youre going to have to guess and check.. i used a cd player to put sound signals into various places to find an input.. and listen on the cordless part.. (you have to press "phone" or "on" or whatever on the phone) then do the same thing with some battery powered speakers (or maybe headphones) to find the output. If something gets hot, then find a new spot.
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