描述了常用的AT命令以及扩展命令，是华为公司内部文档-Commonly used to describe the expansion of the AT command and the command is an internal document Huawei

cmg公司的smpp sdk资料，包括全部详细的接口文档，和sample程序，vc语言版本。也包含了一些同用的smpp的资料。以前做smpp项目时积累下来的。-cmg' s smpp sdk, including all the detailed interface documentation, and sample programs, vc language version. Also contains a number of same using smpp information. P

这是移动手机发送短信的接口文档，为第三方公司提供方便的短信接口规范，里面有java和C#两个版本-This is the mobile phone to send text messages interface documentation for the third-party companies to provide convenient SMS interface specification, there are two versions of java and C#