VaxVoIP WebPhone SDK – Connect Website Visitors to SIP Server or IP PBX
VaxVoIP WebPhone SDK makes it possible to connect website visitors with your SIP Server or IP PBX and provides developers with tools to build webphones featuring voice, video, chat and screen sharing.

Start today with sample source code and a demo, and enjoy a 30-day trial to explore full capabilities.
FEATURES
WEB BROWSERS SUPPORT FOR WEBPHONE
The WebPhone powered by VaxVoIP SIP SDK works with the latest versions of Google Chrome, Firefox, Safari, and Microsoft Edge.
A COMPLETE WEBPHONE DEVELOPMENT SOLUTION
Download VaxVoIP WebPhone SDK — your all-in-one package for developing a WebRTC-based SIP WebPhone. It includes sample code, a technical manual, and a working demo.
CONNECT WEBSITE VISITORS TO YOUR EXISTING IP TELEPHONY SETUP
It's really easy to connect your website visitors to your existing IP telephony network using the VaxVoIP WebPhone SDK, enabling real-time voice and video communication through any SIP-based system.
BUILD A WEBPHONE COMPATIBLE WITH ANY SIP SERVER
Use VaxVoIP WebPhone SDK to develop browser-based webphones that connect smoothly with any SIP compliant voip server or IP PBX.
EASE OF TESTING AND SETUP
Download the demo or sample code — it's really easy to run and test without complex SSL certificate or domain setup. Just launch the VaxServerWebRTC server and connect the webphone to your SIP server.
DEMO
WEB-BASED SOFTPHONE
WEBPHONE - DEMO (HOSTED AUDIO ONLY)
WEBPHONE - DEMO (HOSTED AUDIO & VIDEO)
WEBPHONE - DEMO (HTML/JSCRIPT & SERVER APP)
DOCUMENTATION
TECHNICAL MANUAL (EXPORTED FUNCTIONALITY)
HOW TO ACTIVATE YOUR LICENSE KEY
CONNECT WEBSITE VISITORS TO SIP PBX
BUILD MULTILINGUAL SMART AGENTS FOR WEBSITE VISITORS
SAMPLE CODES
HTML/JSCRIPT & SERVER APP
Visual cSharp .NET
Visual Basic .NET
Visual C++
Enjoy a risk-free 30-day trial of the VaxVoIP WebPhone SDK.
DOWNLOAD SDK
VaxVoIP WebPhone SDK is your all-in-one solution for developing a robust WebRTC server and a feature-rich webphone.
Server WebRTC COM (.DLL)
VaxVoIP WebPhone SDK includes a ServerWebRTC COM component for building a WebRTC server.
HTML/JavaScript WebPhone
VaxVoIP WebPhone SDK provides an HTML/JavaScript WebPhone that easily connects to ServerWebRTC and registers SIP accounts.
FREQUENTLY ASKED QUESTIONS
HOW CAN I START THE 30-DAY TRIAL?
Download VaxVoIP WebPhone SDK, our demo application, or any of our sample codes and explore them for a full 30 days.
WHAT ARE THE GUIDELINES FOR DEVELOPING A WEBPHONE?
Explore our sample source code by clicking the SAMPLES on our website to learn more.
IS ANY SIP SERVER SIDE CONFIGURATION REQUIRED?
VaxVoIP WebPhone SDK lets you easily connect a web-based softphone to your SIP server without needing to set up WebRTC, WebSocket, SSL, or TLS on the server side.
CAN I ADD WEB-BASED SCREEN SHARING AND VIDEO CONFERENCING FEATURES?
Yes, both video conferencing and screen sharing are supported. Please click the SAMPLES link on our website to try and test these features.
COMPATIBILITY OF WEBPHONE SDK WITH DIFFERENT WEB BROWSERS ?
VaxVoIP WebPhone SDK works with all major browsers, including Chrome, Firefox, Safari, Microsoft Edge, and other Mozilla-based browsers.
DOES IT WORK ONLY WITH VAXVOIP SERVER SDK?
No, our SIP SDK is fully compatible with any SIP-compliant SIP server or IP-PBX, as well as a wide range of other SIP-based servers and service providers.
CAN YOU CUSTOMIZE YOUR SOFTWARE SPECIFICALLY FOR OUR NEEDS?
Yes, explore our SDK customization services to meet your unique development needs and create tailored solutions.
DO YOU SELL THE SOURCE CODE OF YOUR SDK?
Yes, the source code of our SDK can be provided with user rights only. Additionally, training on the source code can also be provided.
PRICING
Our licensing model provides a single product/software-based license for VaxVoIP WebPhone SDK. This means that each license is intended for use with one of your products or software applications, ensuring compliance with our licensing terms.
VaxVoIP WebPhone SDK (LICENSE PRICING)
Our SDK comes with no mandatory maintenance fees, and all users receive free technical support, updates, and bug fixes. For those who require priority assistance, optional support packages are available. These packages offer expert-level help, including in-depth analysis of crash reports, memory usage, and diagnostics to resolve any major issues efficiently.