Introduction

In this tutorial, you will learn how to create a Client SDK application and then write the code to receive an inbound PSTN call.

To achieve this, you will need:

• A web application that will notify the service agent of an inbound call and offer the ability to answer it.
• A webhook server that can process an inbound webhook and return an NCCO to forward the inbound call to your application using Node.js, Express, and localtunnel.

Completed project

If you would like to follow along without building the app yourself, the completed project is available on Github - please see the phone-to-app-js folder.