G20手机模块TCP/IP通信说明 记录如何进行G20通信模块软件的功能设计-G20 phone module TCP/IP communications that records how the G20 software communication module design

g20设计的GPRS模块的资料，有一些实际的AT命令，做GPRS通信模块时可以用到-GPRS module g20 design information, there are some actual AT command, so GPRS communication module can be used

G20开发板使用手册,描述了G20开发板的基本功能,使用方法,程序流程等-G20 Development Board User s Guide, describes the development board G20 basic functions, the use of methods, procedures and other processes