Browser-based real-time media
WEBRTC • WEBPHONE • DEVELOPMENT
Connect website visitors to your SIP server or IP PBX
VaxVoIP WebPhone SDK uses WebRTC technology to enable real-time audio, video, chat and screen sharing directly in the browser. Build secure, plugin-free webphones that connect website visitors with SIP servers or IP PBX systems.
✓ Real-time audio and video
✓ Chat and screen sharing
✓ Plugin-free browser communication
✓ 30-day fully functional trial
No extra browser software required
Chrome, Firefox, Safari and Edge
Fully functional evaluation
A • COMPLETE • WEBPHONE • DEVELOPMENT • SOLUTION
Build a WebRTC webphone without changing your SIP server
VaxVoIP WebPhone SDK includes an HTML/JavaScript webphone and a ServerWebRTC COM component. It lets your browser application register SIP accounts and communicate with existing SIP infrastructure without requiring WebRTC, WebSocket, SSL or TLS configuration on the SIP server side.
View connection guide →
WebPhone
Website Visitor
MicVideoChat
WebPhone SDK
Server WebRTC
SIP Server or IP-PBX
Existing VoIP Platform
FEATURES
Everything needed for browser-based SIP communication
Use the SDK as the communication layer behind a customer portal, website calling widget, support application or browser softphone.
Web browser support
Works with current versions of Google Chrome, Firefox, Safari and Microsoft Edge.
Real-time audio calling
Enable website visitors to place and receive SIP-based voice calls in the browser.
Video communication
Add browser-based video calling and conferencing to your web application.
Chat and messaging
Provide real-time text communication alongside voice and video sessions.
Screen sharing
Share browser screens during supported WebRTC communication sessions.
Compatible with any SIP server
Connect to standards-based SIP servers, IP PBX systems and service providers.
ServerWebRTC component
Use the included COM component to build the WebRTC-to-SIP server layer.
HTML and JavaScript webphone
Use the provided browser client to register SIP accounts and control communication.
Easy testing and setup
Launch ServerWebRTC and connect the browser webphone without complex server changes.
Smart website agents
Connect website visitors to multilingual smart agents and automated voice services.
USE • CASES
Create browser communication experiences for every scenario
Click-to-Call
Let website visitors call sales, support or service teams directly from a webpage.
Browser Softphone
Build a complete web-based SIP phone with audio, video, chat and controls.
Customer Portals
Add secure communication to account, service and support portals.
Contact Centers
Create browser-based agent applications connected to existing SIP infrastructure.
Video Assistance
Provide visual customer support and collaborative screen sharing.
AI Website Agents
Connect visitors with multilingual smart agents using real-time browser media.
DEPLOYMENT • ARCHITECTURE
Bridge WebRTC browsers with your SIP infrastructure
The browser WebPhone connects to ServerWebRTC, which communicates with your existing SIP server or IP PBX. This design lets you add browser communication while keeping your current telephony platform.
View Connection Guide
Web Browser
HTML/JavaScript WebPhone
WebPhone SDK
Server WebRTC
SIP ServerExisting Platform
IP-PBXExtensions & Routing
DEMO • WEBPHONE
Test browser audio, video and the complete server package
Use the hosted demos or download the HTML/JavaScript and server application package for local evaluation.
Hosted WebPhone Demo
Launch the hosted audio-only browser webphone.
Launch DemoHosted WebPhone Demo
Launch the hosted browser demo with audio and video.
Launch DemoHTML/JavaScript & Server App
Download the browser client and ServerWebRTC application.
Download DemoDOCUMENTATION
Technical guidance for WebRTC and SIP integration
Technical Manual
Exported functionality for ServerWebRTC and the browser webphone.
License Activation
Instructions for activating and managing your SDK license key.
Connect Visitors to SIP PBX
Step-by-step browser-to-SIP connection guidance.
Build Multilingual Smart Agents
Connect website visitors to AI-powered voice services.
SAMPLE • SOURCE • CODE
Start with HTML, JavaScript and server-side projects
Use the browser webphone sample together with a ServerWebRTC application written in your preferred Windows development environment.
DOWNLOAD • WEBPHONE • SDK
Start your 30-day evaluation
Download the complete WebPhone SDK with ServerWebRTC COM, HTML/JavaScript WebPhone, sample code, technical documentation and demo applications.
FREQUENTLY • ASKED • QUESTIONS
Answers before you build your webphone
Find practical answers about browser support, WebRTC integration, deployment and evaluation.
How can I start the 30-day trial?
Download the WebPhone SDK, demo application or sample source code and evaluate it for 30 days.
What are the guidelines for developing a webphone?
Start with the projects in the sample source-code section, then use the technical manual for integration guidance.
Is SIP server-side configuration required?
No. The WebPhone SDK can connect a browser softphone to your SIP server without requiring WebRTC, WebSocket, SSL or TLS configuration on the SIP server side.
Are screen sharing and video conferencing supported?
Yes. Both video conferencing and browser-based screen sharing are supported.
Which web browsers are supported?
The SDK works with Chrome, Firefox, Safari, Microsoft Edge and other Mozilla-based browsers.
Does it work only with VaxVoIP Server SDK?
No. It works with SIP-compliant servers, IP PBX systems, service providers and other SIP-based platforms.
Can the SDK be customized?
Yes. Customization services are available for specific development and integration requirements.
Is the WebPhone SDK source code available?
Yes. The SDK source code can be provided with user rights, and source-code training can also be arranged.
ANNUAL • COMMERCIAL • LICENSING
Unlimited concurrent calls
Annual licenses include technical assistance, SDK updates, new releases, bug fixes and performance improvements.
One year
$6,240
USD · single service and serverContact SalesTwo years
$10,980
USD · single service and serverContact SalesThree years
$16,220
USD · single service and serverContact SalesBUILD • YOUR • OWN • BROWSER • SOFTPHONE
Ready to connect website visitors to SIP?
Download the SDK, test the hosted demos and discuss licensing, deployment or customization requirements with the VaxVoIP team.