1) Support SKYPE, MSN, Net2Phone, X-PRO etc. famous network phone software 2) USB port, easy to connecting, plug and play 3) no additional sound card and power supply 4) the size as mobile phone, fantastic design 5) PC to Phone communicating 6) PC to PC communication for free 7) DTMF dialing keyboard, and the function of ringing call 8) MSN: 9) Email: