Nokia的GSM模块AT指令集说明文档,本文档描述了如何在GSM网络中通过AT指令来控制Nokia GSM模块。给出了所有相关指令及其语法和说明。-AT Command Set for Nokia GSM Products.　This document describes how to GSM network via AT commands to control the Nokia GSM module. Given all the relevant directives and their syntax and descr iption.