Connect to LTE-M for quectel BG-96

Eric Barten

I think this should be the sequence to connect to LTE-M for the BG-96

//First do a reboot
AT+CFUN=1,1

//Set APN
AT+CGDCONT=1,“IP”,“smartsites.t-mobile”

//Choose Operator and RAT type
AT+COPS=1,2,“20416”,8

//Choose communication band for LTE-M to 1800MhZ ->Band 3
(relates to 4 in below AT command)
AT+QCFG=“band”,0,4,80,1

//Configure Network Category to be Searched
AT+QCFG=“iotopmode”,2,1

//Set scanning network to LTE-M first than NB network
AT+QCFG=“nwscanseq”,020301,1

//Configure RAT(s) to be Searched (LTE-M - band 3 = 0x4)
AT+QCFG=“nwscanmode”,3,1

// enable scrambling
AT+QCFG=“nbsibscramble”,0

//Switch the module to full functionality
AT+CFUN=1

//Show PDP Address
AT+CGPADDR=1

//Check if the device is attached to the network
AT+CGATT?

If the response is 1 it means attached
+CGATT: 1

//Setup a UDP socket (put your target here)
AT+QIOPEN=1,0,“UDP”,“172.27.131.100”,15683

//Send some text data
AT+QISEND=0,5

//Type for example “Hello World”

Hello World

//And a second time, since the first ever UDP message is used for registration. This message you should now receive in your own environment.

Hello World

//You can also send data via UDP in HEX as follows
AT+QISENDEX=0,”48656c6c6f20576f726c64”

You have now successfully sent your first UDP message(s)!

wesley-TOP

@eric-barten Thanks for sharing these commands!
i do have 1 comment regarding the AT-commands.

AT+QCFG=“nwscanmode”,3,4,8
doesn’t seem to work on firmware version: BG96MAR03A03M1G
so i think it should be: AT+QCFG=“nwscanmode”,3,1

and AT+QCFG=“gprsattach”,0 is no longer a supported command in this firmware version.

if all other commands are followed you can get a succesfull connection with LTE-M.

Anup Bhattacharjee

@eric-barten Thank you for sharing these commands

I would like to point out a minor change that would be required in the AT+COPS command for operator selection.
I think it should be:
AT+COPS=1,2,“20416”,8 instead of AT+COPS=1,2,“20416”,9

As ‘9’ is for CAT-NB1 and 8 is for CAT-M

Eric Barten

@anup-bhattacharjee and @wesley-TOP thanks for your updates I will change the post accordingly