[root@localhost toybrick]# minicom -D /dev/ttyUSB2
Welcome to minicom 2.7.1
OPTIONS: I18n
Compiled on Aug 13 2018, 16:38:42.
Port /dev/ttyUSB2, 10:03:48
Press CTRL-A Z for help on special keys
//打开回显
ate
OK
查询版本信息
AT+LCTSW
SoftwareVersion: QB30001.1.7_MX10
InnerVersion: QB30001_0016_1.3.6_L1019_EFS3.3
AP: QB30001_0016_1.3.6_L1019_MX10
OK
查询信号,将会得到信号强度和误码率信息
AT+CSQ
+CSQ: 99,125
OK
信号良好
at+csq
+csq: 31,49
OK
https://m2msupport.net/m2msupport/atcsq-signal-quality/
支持的访问， 0-31都是好的
at+csq=?
+CSQ: (0-31,99),(51-113,125)
OK
+CIEV: 1,5
+CIEV: 4,1
+CIEV: 2,1
+CIEV: 4,0
+CREG: 1,"59D6","1F9D", 0
+CGREG: 2
+CIEV: 6,1
+CGREG: 1,"59D6","1F9D",0
AT+CSQ
+CSQ: 30,53
OK
+CREG: 1,"59D6","3D61", 0
+CGREG: 1,"59D6","3D61",0
注册状态
AT+CREG?
+CREG: 2,1,"59D6","3D61",0
OK
网络运营商信息
AT+COPS?
+COPS: 0,0,"CHINA MOBILE",0
OK
+CREG: 1,"59D6","1F9D", 0
+CGREG: 1,"59D6","1F9D",0
拨号
AT$QCRMCALL=1,1
OK
AT+CSQ
+CSQ: 30,53
断开拨号
AT$QCRMCALL=0,1
OK
参考：
http://jasonfly.me/lora%E5%9F%BA%E7%AB%99%E5%BC%80%E5%8F%91/
At Commands的学习计划
https://blog.csdn.net/laozhuxinlu/article/details/52085150