1.PC-to-PC and PC-to-phone operation;
2.Driver built-in, plug and play;
3.USB1.1 compatible;
4.No need sound card;
5.No external power required;
6.Complies with H.323, MGCP, SIP protocol;
7.Echo cancellation, noise reduction;
8.Application support: Skype, Netmeeting /Messenger, Sjphone, Mediaring, Net2phone, Dialpad, Etalk, X-PRO, X-PRO Vonage, Firefly, Eyebeam and so on;
9.Full duplex communication;
10.Support Skype speed-dialing function;
11.Key-in tone function.
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(USB-110) 
Product Feature