西门子MC55IMODEM模块编程，实现短信和GPRS-TCP/IP两种通信方式，采用状态机处理。实时性更高，模块做到独立，耦合性小。值得参考-Siemens MC55IMODEM module programming, SMS, and GPRS-TCP/IP two kinds of communication, using state machine processing. Real-time high, the module to achieve independence, couple