Win8 Metro Testbed. http://www.splashtop.com/win8
 FLPR. http://www.newpotatotech.com/FLPR/flpr.html
 J. Rosenberg, “A Framework for Conferencing with the Session Initiation Protocol (SIP),” RFC 4353, 2006.
 A. S. Tanenbaum, Computer Networks, 4th ed., Tsinghua University, 2004, pp.651-656
 Qt-Cross-platform Application and UI Framework. http://qt.nokia.com/
 H. D. Liu, J. W. Rui, Y. D. Yao and J. Wu, “Design and Implementation of Internationalized Graphical User Interface Based on Qt,” Journal of Chinese Information Processing, Vol. 20, 2006, pp. 95-99.
 J. Blanchette and M. Summerfield, “C++ GUI Programming with Qt4,” 2nd., Publishing House of Electronics Industry, 2008.