NB-IOT Problem in attaching to the network

NB-IoT
1

Hi, I’m working with NB-IoT SARA-N211 Shield with direct AT commands from the PC.
It was possible to send data to a UDP server successfully with this shield. But when i change the
Cell (even with the same Cell settings with NB-IoT enabled) and test, it gives me 99.9 for the CSQ command.
When i come back to the first cell also it gives me 99.9 for the CSQ. This happens time to time and some times it recovers and comes back to the working condition with correct signal level. Any help to sort out this issues is highly appreciated.
My AT commands are as follows,
AT+NRB
AT+CFUN=0
AT+CGDCONT=1,“IP”,“nbiot”
AT+CFUN=1
AT+NBAND=8
AT+NEARFCN=0,3790,1
AT+COPS=1,2,“41302”
AT+CSQ
AT+CGATT?

Thank you
Prasanga

2

Hi Prasanga,

Can you check with your network operator if you have the correct AT+NCONFIG? settings?
These settings are different for every network operator.
Most of the time this is what causing the issues with the csq and attach.

Best regards,
Jan

3

Hi Jan,
Thank you very much for the kind support.
I’ll check with our network operator for the correct NCONFIG settings.

Thanks
prasanga