What is Voice Call API and How Does it Works

Well to start with, voice calling api is a tool that is used by the software developers to make and receive phone calls easily. In other words can say that it's the voice API that bridges the Public Switched Telephone Network (PSTN) and the applications get connected to the internet. This API permits the software to be built into any existing application that includes iOS, Android, and web applications, easily. VoIP is a feature whose functionality is when added to an application, you can make and receive calls over the internet alone without interfacing with the PSTN.