I am trying to connect an audio source to a wireless landline phone set. It is not connected to an actual land line, I need it to work on its own transmitting audio from the audio source connected to its phone line to its handsets. Don’t need it to ring, just need to know how to trick the phone into thinking it has a line connected to it. Found tons of info online about on splicing into a working phone line, none relating to what I’m trying to do.