Specifications:
1) Supports SIP, H.323, MGCP, IAX2 and Net2phone protocols
2) Supports Skype, MSN, Net2phone, Stanaphone, SJphone, X-Lite, X-PRO,
Firefly, Xten, Eyebeam, ICQPhone, Yahoo call center, Etalk and AIM phone
3) USB2.0 compliant
4) Built-in 16-bit sound card
5) With call list
6) Automatically install USB drive
7) Supports Windows 98 SE/ME/2000/XP and Mac OS/OSX
8) PID function
9) Open SDK, full duplex communication
10) Rings loudly when there is an incoming call
11) PC-to-PC and PC-to-phone operation
12) No external power required, USB bus powered
13) With ringer, selectable rings and volume adjustable
14) Supports E.164 dialing rules
USB Phone