Home Features Samples Demo Download Documentation Price Contact Us   Frequently Asked Questions How to get a 30 days FREE trial? How to develop webphone and softphone? How to develop softphone for Pocket PC? What voice codecs does it support? Echo & noise cancellation supported? Does it support multi-user conference? Does it support call recording, transfer & hold? Does it work on Windows 7 & Vista? It works on FireFox, Chrome & Safari web browsers? more   VaxVoIP SIP (Session Initiation Protocol) SDK VaxVoIP SIP SDK provides tools and components to quickly add SIP (Session Initiation Protocol) based dial and receive phone calls feature in your web pages and software applications. It accelerates the development of SIP based soft phone with your own GUI (graphical user interface) and brand name. VaxVoIP SIP SDK includes SIP activeX , SIP OCX , SIP DLL , SIP Lib and SIP Cab, so you can use the one you like the most. It is really easy to incorporate VaxVoIP SIP controls in your web pages and/or applications. Sample source codes are available to download. VaxVoIP SIP SDK can also be used to develop softphone for MS Windows Mobile based Pocket PC and Hand-Held devices. It delivers superior voice quality by integrating advanced digital voice processing features including acoustic echo cancellation, noise cancellation and adaptive jitter buffering. For more details, please visit the features link.   Some of our customers    Supported Languages Visual Basic .NET Visual C++ .NET Visual C# .NET Visual Basic Visual C++ Borland Delphi Borland C++ JavaScript/HTML    Become a Reseller VaxVoIP offers resellership program to those companies, who are looking for business opportunity and want to become a reseller for VaxVoIP SIP SDK. If you want to become a reseller, please contact contactus@vaxvoip.com    Custom  Development VaxVoIP offers affordable software customization for our products. Whether you need simple changes or need new functionality, we offer services to meet your needs. If you are interested in custom software development, please contact customdev@vaxvoip.com.   Terms Of Use Privacy Policy   Copyright © 2010 VaxSoft. All Rights Reserved.