command - 重置 USB 蜂窝调制解调器的 AT 命令是什么？

Question

用于重置 USB 蜂窝调制解调器的 AT 命令序列是什么？

是否有可以使用的单个 AT 命令？或者是否需要一系列的操作才能重置 USB 蜂窝调制解调器？

我有华为 E272 和 E220，但是我也对通用命令序列感兴趣(如果有任何标准 AT 命令)。

Answer 1

重置调制解调器是制造商特定的 AT 命令。

网上有华为 AT 命令的规范 here.

查看第 3.10 节 +CFUN

The EXECUTION command is used to set the MS mode or restart the MS

AT+CFUN 有 2 个参数:

AT+CFUN=[fun[,rst]] 

这2个参数fun和rst定义如下:

fun:
0 Set as minimum functionality mode (set the RF off but keepthe SIM power on, previous mode must not be offline)
1 Set as online mode (default value) (previous mode must not be offline)
4 Set as offline mode (previous mode must not be FTM)
5 Set as offline FTM (previous mode must be online)
6 Reset MS (previous mode must be offline)
7 Set as RFoff mode (about radio frequency)

rst: Whether to restart MS before setting
0 Not restart MS before setting. (Default)
1 Restart MS before setting. (fun must be 1)