Let's start adding Twilio Client functionality to a real application with an in-depth tutorial, including complete HTML, JavaScript, and PHP code samples.

If you're not using PHP but rather another server-side language, the principles will be extremely similar. Simply see the Twilio Capabilities documentation for your own language. The JavaScript will remain the same irrespective of what you're running on your backend.

Suppose we add a page to our website that allows users to call our customer support team from within their browser. We'll let them choose the kind of problem they're having, and then we'll use that information to connect them to the right person.