1.USB 2.0 port;
2.16 bit sound card inside, the PC can without Sound Card;
3.Support H.323, SIP, MGCP etc lot of protocol;
4.Support product serial write in;
5.With HID (Human Interface Device) Feature;
6.Plug & Play to Install USB Driver;
7.No driver needed for Win98 SE/Win ME/ Win 2000/Win XP/ Mac OS/Mac OS X;
8.With PID (Physical Interface Device) Feature;
9.Implement "Real-Time" verification;
10.Compatible with Major PC's Internet Phone Application Software;
11.Provides Ringer Generation for PC to PC Call Through Existing IP phone Applications;
12.Optional ITSP Application Software With Credit for PC to Phone Connection;
13.ALED to indicate Power and Linking Status;
14.Adjustable volume for handset;
15.Support E.164 dialing rule;
16.Record support;
17.The powered via the USB port with no need for a power adaptor;
18.It can support Skype, MSN, net2phone, etalk, Stanaphone, SJphone, X-Lite, X-PRO, Firefly