WebRTC Calling Explained

WHAT IS WebRTC?

WebRTC (Web Real-Time Communication) is a technology built into modern browsers that enables voice, video, and data communication without plugins or external software. When you use @dsajhdsuwgryegwhsbdwur_bot's Web Dialer, WebRTC handles the audio connection between your browser and our SIP infrastructure.

HOW IT WORKS

When you make a call through the Web Dialer:

1. Your browser captures audio from your microphone
2. WebRTC encrypts the audio using DTLS-SRTP
3. The encrypted audio stream is sent to @dsajhdsuwgryegwhsbdwur_bot's media server
4. Our server bridges the WebRTC stream to a standard SIP call
5. The call is routed to the destination through our SIP trunks

All of this happens in milliseconds, resulting in call quality comparable to — or better than — a traditional phone call.

WebRTC vs TRADITIONAL SIP

• No installation — WebRTC runs in the browser, SIP requires a softphone app
• Built-in encryption — WebRTC mandates DTLS-SRTP encryption. SIP encryption is optional.
• NAT traversal — WebRTC uses ICE/STUN/TURN to handle NAT automatically. SIP clients often struggle with NAT.
• Codec support — WebRTC uses Opus by default (superior quality). SIP commonly uses G.711 or G.729.

SECURITY

WebRTC is inherently secure. All media streams are encrypted with DTLS-SRTP, and signaling goes over WSS (WebSocket Secure). Your audio cannot be intercepted in transit. @dsajhdsuwgryegwhsbdwur_bot's Web Dialer uses these security features by default — there's nothing to configure.

BROWSER SUPPORT

WebRTC is supported in all major browsers: Chrome, Firefox, Edge, Safari, Brave, Opera. Chrome and Edge generally provide the best WebRTC performance and lowest latency.

LIMITATIONS

WebRTC is great for individual calls but has some limitations compared to dedicated SIP clients:

• No push notifications — the browser tab must be open to receive calls
• Browser tabs can be throttled by the OS, affecting audio quality in the background
• For high-volume or PBX integration, SIP or IP2IP is better suited