Twilio's Voice JavaScript SDK (formerly called "Twilio Client") allows your users to make and receive phone calls in their browsers. This tutorial will show you the front-end and backend code necessary to make browser-to-phone and browser-to-browser calls with the Voice JavaScript SDK.
Companies like Zendesk use Twilio Client to power their customer support centers. This tutorial and accompanying application power the support site for the Birchwood Bicycle Polo Co., which sells equipment to those who play "the sport of kings." It has three main features: