wxCommunicator is a cross platform SIP softphone written in C++ utilizing customized sipXtapi user agent library and wxWidgets 2.8.9 GUI library. For a list of supported features see http://wxcommunicator.sourceforge.net/features.html .
Thanks for updates ;)
The program works great. Read the program help to understand how to configure it. The source code compiled without any problem with Visual Studio 2008. Thanks a lot!