We will cover all the major SIP-based endpoints to establish their compliance/noncompliance with a WebRTC client. We will look at native browser support for a WebRTC client and SIP softphones capable of interacting with a WebRTC client for the following desktop operating systems:

We will also analyze the support for WebRTC communication from mobile phone operating systems. For this purpose, we will chiefly analyze the following three OSs for mobile platforms:

Let's first divide the test cases for WebRTC client functioning across various OSs. It will be followed by browsers and software supported by the particular OS.