VOIP SIP SOFTPHONE SDK

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. SIP SDK includes SIP activeX , SIP OCX , SIP DLL , SIP Lib and SIP Cab, so you can use the one you like the most.