How to make a call from android device #1 through android device #2?

Question

Android

Hello! Is it possible, by connecting 2 android devices to LAN, to make calls from device No. 1 (which does not have SIM cards - a tablet) through device No. 2 (which has a SIM card)?
What to read to code yourself? Thank you!

Answer 1

Here, most likely, you need to dig with the drivers, tedious and long

Answer 2

unlikely, since standard APIs cannot access the phone's audio path.