In this tutorial, you will learn how to create an iOS application using Swift and the Nexmo iOS Client SDK, and then write the code to make an app to app call.
Two parts are needed to achieve this:
- An iOS application that will make the voice call using the Client SDK.
- A publicly accessible URL that serves instructions on how to handle the call. To accomplish this, you will create a webhook server using Node.js, Express and localtunnel.
If you prefer to follow along by video, you can find this tutorial on YouTube:
This tutorial uses NexmoClient version 4.0 and Swift 5
Making an app to app voice callYou make a voice call from an iOS app to another iOS app