It is , it will sound funny but when you have phone with more than 1 line you both lines rings and you answer the one you decide. But giving you a more elaborate technical answer you can put callers on some kind of holding slot using BridgeWait() or Parking() app
I see, so you put them to wait, and then you basically select which one you want to answer?
That gives me an idea to look for on google. Thank you @ambiorixg12 for your fast reply
If you put the callers on holds, the callee must have way to identify each of the callers on hold, and a way to un hold them.
I made a code a long time ago where the caller record his name and stay on hold and then the callee hear the message and decide if accept or not the call