Getting Calls from your PSTN Carrier At the point when a client calls one of your Phone Numbers, the call will be gotten by your PSTN Carrier, who will then, at that point, forward the call to your Twilio BYOC Trunk designed previously. At the point when Twilio gets that call, your web application will be summoned, and off you go utilizing Twilio programmable Voice, doing all the Twilio sorcery you do with your Twilio numbers!https://dzone.com/articles/twilio-vs-mirrorfly-who-is-the-future-of-real-time