How to build: WebRTC Gateway

Adding WebRTC to your existing call center through the PSTN involves getting familiar with Twilio Programmable Voice, webhooks and TwiML, and Twilio Client. Calls are directed from your PBX to phone numbers you configure on Twilio, and your application tells Twilio which WebRTC endpoint to connect the call to.

Step 1

Add a number for each WebRTC agent

Each WebRTC-enabled agent will have their own phone number on Twilio, for Twilio to receive calls from your call center.

Step 2

Configure your call center

Configure your call center to forward calls to your new Twilio number when you receive a call that should be handled by a WebRTC agent. When Twilio receives that call, your web server will get a webhook.

Step 3

Connect your numbers to WebRTC clients

Your application maps which number corresponds with which agent, and responds with TwiML to specify the client username to call.

Step 4

Integrate the SDK into your web app

Include the Twilio Client SDK in your JavaScript web application. Twilio Client registers with Twilio with a token that specifies the username of the client. The SDK provides events that are triggered when a call is received.