... , DELPHI, PB, C++ Builder,. NET, WEB GXUSB-8-line telephone voice boxFeatures and Benefits: With USB interface, easy to install, plug ... into backplane so it is not easy to loose, the voice board is equipped with ringing current power supply Modules for ... )Development Environment: Provides drivers in WIN2000/XP and LINUX operating system Unified DLL dynamic link library and ActiveX control Supports VC ...