Are there Apis that allow receiving telephony events(ring, answer, hangup, etc.) in real-time?

Hey John, I'm going to move this over to our Developers Community who may have the answer :)

Hi John,

The answer is yes. You can use the company or the user presence push notification to get real time changes of the telephony status.

This tutorial is showing how to get notified when there is a call recording using the presence push notification. You can use the same status changed sequence to determine ringing, answer and hangup.

Let me know if you want some sample code in other languages.

+ Phong