... VB, DELPHI, PB, C++ Builder,. NET, WEB GX16 telephone voice boardFeatures and Benefits:With USB interface, whole based on ... architecture, Single board connect up to 16 analog telephone line and provide parallel process of less than 16 ... one-channel telephone voice board GX02---- two-channel telephone voice board GX04---- four-channel telephone voice board GX08---- eight-channel telephone voice board ...