Clear One Chat 50 USB Plus Personal Conferencing System 910-159-002 Connects to the following : Internet telephones, such as Skype or Vonage; VoIP softphones, such as Avaya, Cisco, Nortel; Web conferencing applications, such as LiveMeeting, Sametime, WebEx Cell phones and telephones for hands-free, full-duplex conversations Chat 50 USB Plus - includes Chat 50 Personal Speaker Phone, USB cable, 2.5mm-3.5mm cell phone audio cable, power supply