Here’s the output of AT+QCFGEXT=?
+QCFGEXT: "addgeo",<geoid>,<mode>,<shape>,<lat1>,<lon1>,<lat2>[,<lon2>[,<lat3>,<lon3>[,<lat4>,<lon4>]]]
+QCFGEXT: "deletegeo",<geoid>
+QCFGEXT: "querygeo",<geoid>
+QCFGEXT: "nipdcfg"[,<type>[,<apn>[,<username>,<password>]]]
+QCFGEXT: "nipd"[,<mode>[,<timeout>]]
+QCFGEXT: "nipds"[,<mode>,<data>[,<data_length>[,<rai_flag>]]
+QCFGEXT: "nipdr"[,<read_length>[,<read_mode>]]
+QCFGEXT: "dump"[,(0,1)]
+QCFGEXT: "quecopen"[,(0,1)]
+QCFGEXT: "disusb",(0,1)
+QCFGEXT: "usb/event"
+QCFGEXT: "fota_apn",<iptype>,<apn>[,<username>,<password>]
+QCFGEXT: "sni"[,(0,1)]
+QCFGEXT: "dnsc_timeout"[,(2-300)]
+QCFGEXT: "pwm",<pin>[,(0,1)[,(1-99),(293-600000)]]
+QCFGEXT: "usbnet"[,"ecm,modem,rmnet"]
+QCFGEXT: "fota_http_header",<header_key>,<header_value>
+QCFGEXT: "fota_wd_gpio",<switch>,<pin_num>,<feed_interval>
+QCFGEXT: "ap_os_version"
And here is the relevant part of the cat /sys/kernel/debug/usb/devices
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 22 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=2c7c ProdID=0700 Rev= 0.00
S: Manufacturer=Quectel, Incorporated
S: Product=Quectel LPWA Module
S: SerialNumber=56171261
C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=85(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms