GSM移动终端AT命令集(GSM 07.07 version 7.4.0 Release 1998)

标准的AT命令集，版本为3GPP TS 27.007 version 4.6.0 Release 4，推荐研究AT指令集的朋友下载-The standard AT command set, the version of 3GPP TS 27.007 version 4.6.0 Release 4, recommends study of AT instruction set of a friend to download