nrf9160 NBIot and Ltem Auto mode

[nmlkpoiu]

Hi

  1 Can nrf9160 automatic select PLMN in both NBIot and Ltem mode? Is the auto select PLME default? And how to enable this auto select PLMN mode?

  2 Can nrf9160 automatic switch between towers while the device is moving in both NBIot and Ltem mode? And how to enable it?

  Thanks.

[nmlkpoiu]

Our nrf9160 device failed to send data to our server. We think it may because of the auto select PLMN mode not enabled.

[Håkon Alseth]

Hi,

 

  1 Can nrf9160 automatic select PLMN in both NBIot and Ltem mode? Is the auto select PLME default? And how to enable this auto select PLMN mode?

It will read the PLMN from the sim card, if present there. You can search for "home PLMN", "visitor PLMN" etc. to learn more about this.

  2 Can nrf9160 automatic switch between towers while the device is moving in both NBIot and Ltem mode? And how to enable it?

Mobility is available (and used by default) in LTE-M for seamless handover between cell towers, but not in NB1.

 

If you have an issue, can you please try to run at_client in combination with LTE Link Monitor (available through nRF connect for desktop), and share the log file from this?

You need to issue "AT+CFUN=1" and afterwards "AT+CFUN?", then it should print any incoming notifications.

 

Kind regards,

Håkon

[nmlkpoiu]

Can nrf9160 do "automatic PLMN selection" and how to do it?

[Håkon Alseth]

Yes, that is the default behavior. See AT+COPS:

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/nw_service/cops_set.html?cp=2_1_7_0_0

 

Kind regards,

Håkon