Design and Implementation for Communicating between Computer Serial Port and Mobile Phone

In order to simulate the procedure of communicating between computer serial port and mobile phone, this paper describe the way how mobile phone sending short message and the way how procedure controlling computer serial port and mobile phone to communicate. It mainly introduces the PDU coding and AT instruction of short message. The procedure depending on a serial port controller called SerialPort to send short message in terminal way, and it completes the core function of communicating between computer serial port and mobile phone, so it is easy for expansion and secondary development.