AT命令详解手册。本文档以针对AYG-59C GSM MODEM介绍了AT 命令集及其基本的使用方法所有的AT命令均逐一列举并附有使用的例子对于其他类型的模块若有不同的操作请-AT command Xiangjie manual. The documentation for AYG-59C GSM MODEM introduced the AT command set and the basic use of all of the AT commands are listed one by one, together with examples of the use of other types of modules for different operations if requested