USB VOIP Adaptor AD200 provides the high quality of VOIP communication by easy Connection to the Internet. It can be connected to the regular phone and enable The user to place a Skype phone call exactly the same as if you are placing A regular call. 1) Make and answer both Skype calls and PSTN calls simultaneously, USB interface to PC, 1 FXS for regular phone,1 FXO for PSTN call. 2) Pc-to-PC, PC-to-phone, Phone to phone operation 3) Three-way conference calling between PSTN and Skype calls 4) Auto-detection and auto-switch to Skype or PSTN calls 5) Driver and sound card built-in, no external power required 6) Call forwarding to programmed number Call forwarding password configuration 7) Echo cancellation, noise reduction, full duplex communication 8) Easy program installation and non-driver installation 9) High quality and stability, cost-effective 10) Dial using the phone keypads 11) PSTN or Skype calls selectable by phone key (##) 12) Phone rings for all incoming Skype and PSTN calls 13) Call waiting 14) Record telephone communication to PC. 15) Supporting DECT,2.4G,900M and any other wireless phones 16) USB and PSTN lines LED indicator