I apologize, I still didn't quite understand what you are trying to use the 3.5 jack, it is just a connection for your earphones, the little circuits in the earphones are being driven by the soundwaves generated inside the phone, the 3.5 jack is just provides a path, it doesn't actually switch your phones ringing to the headset, your phones IC does that.
I had no internet so sorry for the late reply.
I know IC switches but what u don't seem to get is that I am not going to use the jack only the soundwaves in it
