How to build: WebRTC Gateway
Add WebRTC to your call center by forwarding calls to Twilio over the carrier network or SIP.
Adding WebRTC to your SIP-based call center involves getting familiar with Twilio SIP Interface, webhooks and TwiML, and Twilio Client. Calls are directed from your PBX to a SIP domain you configure on Twilio, and your application tells Twilio which WebRTC endpoint to connect the call to.
Step 1
Create a SIP Interface
Use Twilio SIP Interface to create a SIP domain for Twilio to receive calls from your PBX.
Step 2
Configure your call center
Configure your VoIP Infrastructure to send calls for particular users/numbers to your new Twilio domain. When Twilio receives calls, your web server receives a webhook.
Step 3
Connect your SIP Interface to WebRTC Clients
Your application responds with TwiML to specify which client username that call should map to. Your application server might map the dialed number from the SIP domain to a client username, or you might use the same client usernames as SIP usernames.
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.
Twilio Client tutorial
Learn how to use Twilio Client to make and receive calls from your browser using WebRTC.
Explore tutorialSIP Interface docs
Read the docs on how to setup SIP interfaces between your VoIP infrastructure and Twilio.
Read the docsClient docs & SDK
Read the Twilio Client docs and download the Twilio Client SDK.
Read the docs
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