Specifications:
Full featured USB VOIP Phone (PC to PC/Phone operation).
Plug-and-play installation, free driver built-in and no sound card need
No external power required
Complies with H.323, MGCP, SIP protocol
Compliant with USB 1.1/2.0 full speed operation
USB-A type connection with the PC
Supported USB HID for Host Control Synchronization
Mechanical hook switch & DTMF dialing
Noise reduction and echo cancellation
Excellent voice quality and full duplex communication
48K/44.1KHz Sampling rate for both playback and recording
Compatible with Windows 98SE/ME/2000/XP, MAC OS9/OS X
Network: LAN, ADSL, ISDN,33.6k modem or better
Application support: MSN/Messenger/Netmeeting, Yahoo, SJ Phone, Net2phone, Dialpad, Skype, myJabber, AOL,