NXD-2B is a USB interface portable phone made by Estone Company. It offers USB2.0 interface and built-in 16bit sound card, and can be installed without driver under win98SE/win2000/win xp /Mac OS9/Mac OS X. AU100 offers open SDK to simplify software development and specialized communication applications based on it. With ATCOM? USB DIALER program, it can support various popular IM software such as Skype, SJ phone, X-Lite, Yahoo, VoipBuster... It supports E.164 based dialing rule, has simple and easy-to-use key operation. It is a very cost-effective voice product；