Parallel port can be used in this way. Refer the presentation.

The MT6225 is a highly integrated single chip solution for GSM/GPRS phone. Based on 32-bit ARM7EJ-STM RISC processor, MT6225 features not only high performance GPRS Class 12 MODEM but is also designed with support for the wireless multi-media

通过该程序可以获取机子上的所有串口和并行口，进行串口通信/。-The program can be accessed through the machine all the serial and parallel port for serial communication /.