VoIP SDK to accelerate development of any type of VoIP-enabled application, like a SIP soft phone, teaching tool, live support, meeting tool or any other type of application which requires users being able to talk to each other. Deliver SIP-based communications and services for PC-to-Phone, Phone- to-PC and PC-to-PC services and is fully inter-operable with any RFC SIP 3261 Provide the documentation and samples you need to integrate with other applications or Web sites, can be used by any development environment has ActiveX support. This version is the first release on CNET Download.com.
||Free to try
||Windows 2000/XP/2003 Server/Vista