... -run uSipphone & X-PRO,Completely Play-and-Plug* Support the X-PRO softphone* Four row Dot-matix LCD ... display,easy operation* Support the calling between PC-to-PC and PC-to ... ,convenience for lifting* Query function for the phonebook* Support speaker and re-dial* Real time display,No external ... panel,similar as mobile phone . USB SIP Phone, support custom software brand of yours