Switching of NBIOT with 2G network in SARA R412M

NB-IoT
1

Hi,
We have SODAQ SARA R412M Board and we are using DU NBIOT sim. Each time when we are establishing the network for NBIOT, the module is getting connected by default with the 2G network. Below are the AT commands we used for establishing NBIOT.

AT+UMNOPROF=100 ​
AT+CFUN=15
AT+UMNOPROF?
AT+URAT=?​
AT+URAT=8
AT+CFUN=15 ​
AT+CEREG? ​
AT+CEREG=2
AT+CEREG? ​
AT+CGDCONT=1,“IP”,”duiot” ​
AT+CGDCONT?
AT+CFUN=15 ​
AT+COPS?​
AT+COPS=0,0,“duiot"
AT+COPS?
AT+CSQ
AT+CFUN=15 ​
AT+CGATT?
AT+CGATT?
AT+CGACT=1
AT+CGPADDR
AT+USOCR=17
AT+USOST=1,“52.1.229.129”,8891,16,“16 bytes of data”
AT+CFUN=15 ​
AT+USOCL=0

We have contacted the Network provider (Du UAE) and they told us that there is some commands missing. Please guide us.

Also, please let us know if there is any AT commands which confirms the connectivity to the NBIOT network.

With Regards
Pratibha

2

Hi @Priti,

I see you use the command AT+CFUN=15 a lot.
Just the one after AT+CGDCONT? should be fine.
After you send the command AT+CFUN=15 check that all settings are correctly saved.

This is the command sequence we recommend to use:
Passthrough - SODAQ Support pages

Best regards,
Jan

3

Hi,

Thanks for your help. Now our module is attached to the NB-IOT network.

Regards,
Pratibha K

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