How to Make a Text-to-Speech Phone Call in ASP.NET

The Vonage Voice API allows for easy integration with ASP.NET applications, enabling features such as making and receiving phone calls. To set up this functionality, developers must create a Vonage application, generate public and private keys, and configure their ASP.NET project in Visual Studio. The `appsettings.json` file is used to store sensitive information like the Application ID and Private Key path. A new controller called VoiceController is created to handle business logic for making a Text-to-Speech phone call, which uses the VonageClient to create a call with specified endpoints and credentials. Once set up, developers can run the app and make a successful Text-to-Speech phone call.