目前firmware无法查询AMBR
root@RG200U_1:~# chat -t 3 -e ‘’ ‘ati’ OK >> /dev/ttyUSB2 < /dev/ttyUSB2
ati
Quectel
RG200U-CN
Revision: RG200UCNAAR01A15M2G
OK
root@RG200U_1:~# chat -t 3 -e ‘’ ‘at+qnwcfg=“nr5g_ambr”’ OK >> /dev/ttyUSB2 < /dev/ttyUSB2
at+qnwcfg=“nr5g_ambr”
+CME ERROR: 4