LineBox is a USB box designed for LINE gateway application with landline interface. With LineBox running under Windows version LINE, you can have LINE voice service via phone. After LineBox is connected with PBX, conference phone or regular phone, employees can pick up desk phones to make or receive LINE calls. With companies using LINE to interact with its fans, fans can make free calls to companies via company LINE account. It is convenient and companies can have a close relationship with their fans at a very cheap cost. Employees out of office, company customers and suppliers can have a free call to company office. Hence , telecom carrier line ports can be reduced. LineBox has dual interfaces “Phone” for phone and “ Line” for carrier line. With few PBX trunk cards in the office, they can adopt LineBox and the connecting PBX trunk port can have landline and LINE calls.