Support world-famous Skype VoIP call. Binding Skype speed-dialing function, can activate Skype speed-dialing through ordinary dialing mode. Dial and answer a call with ordinary telephone through Internet. Ringing when receiving a call from USB line and PSTN line. Support DECT, 2.4G, 900M and other cordless telephone, support key telephone system and exchange. Automatically check and switch the USB line and PSTN line. Can make conversation through USB line and PSTN line at the same time, and switch the line by dialing ? * 0? LED prompts the line status. Can realize PC-to-PC, PC-to-PSTN, PSTN-to-PSTN call by using this box. Accessories: USB Gateway x1 User Guide x1 Installation CD x1 Telephone Line x1