... ,etc.. Support calling between PC-PC , PC-Phone,competitive price USB Skype Phone,Skype USB Phone for skype! Voip protocal ,etc.. Easy operation and widely used ... Support the X-PRO softphone* Four row Dot-matix LCD display,easy operation* Support the calling between PC-to- ... PC and PC-to-Phone* Echo cancellation,noise reduction,full duplex communication* Incoming/outgoing ...