• usb port,hot insert, no driver • no need sound card and power support, clear tone • no need to take headphone and mic for long time. • decrease the noice and maintain the phone quality • support pc-to-pc and pc-to-phone • usb port 2.0/1.1 • no need sound card • no need external power • low down the noice • compatible with h.323, mgcp, sip • full-duplex communication • button sound and in call sound • support skype platform and quick dail • read and operate skype friends, dail, call record, use phonebook to dail system required • microsoft windows 2000/xp • 128mb • 16mb hardisk • a usb port • network connection ( adsl, cable modem, wireless lan ) e-mail: danny@vnetphone.com url: www.vnetphone.com skype id: cnwxdkj msn: szwxdkj@hotmail.com