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  • Case ID: 286910
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case about nRF9160 CAT-NB1 or CAT-M1

user83603

Hi,

1. Can nRF9160 equipment automatically identify the following two networks?

2.CAT-NB1/NB2

3.CAT-M1

4. Automatically identifies the NB network when inserting a NB SIM card

5. When inserting a CAT-M SIM card, it automatically identifies the CAT-M network

Thank you for all your assistance.
Kind regards,
Peter.Min

  • 0

    Hi Peter,

    I suggest you play with nRF9160: AT Client — nRF Connect SDK 1.9.1 documentation (nordicsemi.com) sample and pay attention to System mode %XSYSTEMMODE.

    I am sure you will get the answers by yourself. Just let me know if you need any more help.

    Best regard,

    Charlie

  • 0 in reply to user93921

    Hi Charlie,

    1. My test example is merged_serial_lte_modem_V1.9.hex

    2. My test instructions are:

    AT%XFACTORYRESET=0

    AT+CFUN=1

    AT%XSYSTEMMODE?

    2022-04-01T09:44:55.090Z INFO Application data folder: C:\Users\Peter\AppData\Roaming\nrfconnect\pc-nrfconnect-linkmonitor
2022-04-01T09:44:55.152Z DEBUG App pc-nrfconnect-linkmonitor v2.0.0 official
2022-04-01T09:44:55.152Z DEBUG App path: C:\Users\Peter\.nrfconnect-apps\node_modules\pc-nrfconnect-linkmonitor
2022-04-01T09:44:55.152Z DEBUG nRFConnect 3.10.0, required by the app is (^3.8.0)
2022-04-01T09:44:55.152Z DEBUG nRFConnect path: C:\Users\Peter\AppData\Local\Programs\nrfconnect\resources\app.asar
2022-04-01T09:44:55.152Z DEBUG HomeDir: C:\Users\Peter
2022-04-01T09:44:55.152Z DEBUG TmpDir: C:\Users\Peter\AppData\Local\Temp
2022-04-01T09:44:56.877Z INFO Modem port is opened
2022-04-01T09:44:56.885Z DEBUG modem >> AT+CFUN?
2022-04-01T09:44:56.901Z DEBUG modem << +CFUN: 0
2022-04-01T09:44:56.903Z DEBUG modem << OK
2022-04-01T09:45:08.980Z DEBUG modem >> AT%XFACTORYRESET=0
2022-04-01T09:45:08.997Z DEBUG modem << OK
2022-04-01T09:45:17.491Z DEBUG modem >> AT+CFUN=1
2022-04-01T09:45:17.533Z DEBUG modem << OK
2022-04-01T09:45:20.354Z INFO Modem port is closed
2022-04-01T09:45:20.364Z INFO Modem port is opened
2022-04-01T09:45:20.369Z DEBUG modem >> AT+CFUN?
2022-04-01T09:45:20.376Z DEBUG modem << +CFUN: 1
2022-04-01T09:45:20.378Z DEBUG modem << OK
2022-04-01T09:45:20.385Z DEBUG modem >> AT+CGSN=1
2022-04-01T09:45:20.394Z DEBUG modem << +CGSN: "352656100375701"
2022-04-01T09:45:20.397Z DEBUG modem << OK
2022-04-01T09:45:20.401Z DEBUG modem >> AT+CGMI
2022-04-01T09:45:20.412Z DEBUG modem << Nordic Semiconductor ASA
2022-04-01T09:45:20.413Z DEBUG modem << OK
2022-04-01T09:45:20.415Z DEBUG modem >> AT+CGMM
2022-04-01T09:45:20.420Z DEBUG modem << nRF9160-SICA
2022-04-01T09:45:20.421Z DEBUG modem << OK
2022-04-01T09:45:20.428Z DEBUG modem >> AT+CGMR
2022-04-01T09:45:20.434Z DEBUG modem << mfw_nrf9160_1.3.1
2022-04-01T09:45:20.435Z DEBUG modem << OK
2022-04-01T09:45:20.436Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.3.1] SerNr: 352656100375701
2022-04-01T09:45:20.437Z DEBUG modem >> AT+CEMODE?
2022-04-01T09:45:20.444Z DEBUG modem << +CEMODE: 2
2022-04-01T09:45:20.445Z DEBUG modem << OK
2022-04-01T09:45:20.450Z DEBUG modem >> AT%XCBAND=?
2022-04-01T09:45:20.460Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,18,19,20,25,26,28,66)
2022-04-01T09:45:20.461Z DEBUG modem << OK
2022-04-01T09:45:20.465Z DEBUG modem >> AT+CMEE?
2022-04-01T09:45:20.470Z DEBUG modem << +CMEE: 0
2022-04-01T09:45:20.471Z DEBUG modem << OK
2022-04-01T09:45:20.478Z DEBUG modem >> AT+CMEE=1
2022-04-01T09:45:20.482Z DEBUG modem << OK
2022-04-01T09:45:20.486Z DEBUG modem >> AT+CNEC?
2022-04-01T09:45:20.493Z DEBUG modem << +CNEC: 0
2022-04-01T09:45:20.494Z DEBUG modem << OK
2022-04-01T09:45:20.497Z DEBUG modem >> AT+CNEC=24
2022-04-01T09:45:20.502Z DEBUG modem << OK
2022-04-01T09:45:20.504Z DEBUG modem >> AT+CGEREP?
2022-04-01T09:45:20.510Z DEBUG modem << +CGEREP: 0,0
2022-04-01T09:45:20.511Z DEBUG modem << OK
2022-04-01T09:45:20.515Z DEBUG modem >> AT+CGDCONT?
2022-04-01T09:45:20.519Z DEBUG modem << OK
2022-04-01T09:45:20.526Z DEBUG modem >> AT+CGACT?
2022-04-01T09:45:20.531Z DEBUG modem << OK
2022-04-01T09:45:20.534Z DEBUG modem >> AT+CGEREP=1
2022-04-01T09:45:20.542Z DEBUG modem << OK
2022-04-01T09:45:20.546Z DEBUG modem >> AT+CIND=1,1,1
2022-04-01T09:45:20.550Z DEBUG modem << OK
2022-04-01T09:45:20.554Z DEBUG modem >> AT+CEREG=5
2022-04-01T09:45:20.563Z DEBUG modem << OK
2022-04-01T09:45:20.566Z DEBUG modem >> AT+CEREG?
2022-04-01T09:45:20.579Z DEBUG modem << +CEREG: 5,4
2022-04-01T09:45:20.580Z DEBUG modem << OK
2022-04-01T09:45:20.584Z DEBUG modem >> AT%CESQ=1
2022-04-01T09:45:20.593Z DEBUG modem << OK
2022-04-01T09:45:20.596Z DEBUG modem >> AT+CESQ
2022-04-01T09:45:20.603Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2022-04-01T09:45:20.604Z DEBUG modem << 
2022-04-01T09:45:20.607Z DEBUG modem << OK
2022-04-01T09:45:20.612Z DEBUG modem >> AT%XSIM=1
2022-04-01T09:45:20.617Z DEBUG modem << OK
2022-04-01T09:45:20.619Z DEBUG modem >> AT%XSIM?
2022-04-01T09:45:20.627Z DEBUG modem << %XSIM: 1
2022-04-01T09:45:20.628Z DEBUG modem << OK
2022-04-01T09:45:20.632Z DEBUG modem >> AT+CPIN?
2022-04-01T09:45:20.637Z DEBUG modem << +CPIN: READY
2022-04-01T09:45:20.643Z DEBUG modem << 
2022-04-01T09:45:20.644Z DEBUG modem << OK
2022-04-01T09:45:20.648Z DEBUG modem >> AT+CPINR="SIM PIN"
2022-04-01T09:45:20.660Z DEBUG modem << +CPINR: "SIM PIN",3
2022-04-01T09:45:20.662Z DEBUG modem << 
2022-04-01T09:45:20.663Z DEBUG modem << OK
2022-04-01T09:45:20.666Z DEBUG modem >> AT+CIMI
2022-04-01T09:45:20.671Z DEBUG modem << 460046428407776
2022-04-01T09:45:20.677Z DEBUG modem << 
2022-04-01T09:45:20.678Z DEBUG modem << OK
2022-04-01T09:45:20.679Z INFO IMSIdentity: 460046428407776
2022-04-01T09:46:31.496Z DEBUG modem << +CEREG: 4
2022-04-01T09:47:59.824Z DEBUG modem >> AT%XSYSTEMMODE?
2022-04-01T09:47:59.831Z DEBUG modem << %XSYSTEMMODE: 1,0,0,0
2022-04-01T09:47:59.832Z DEBUG modem << OK

    3. I found that the default factory setting is cat-m,

    I inserted NB card and cannot connect to the network

    4. However, according to the customer's feedback, it is set to NB mode and automatically connected to CAT-M network after inserting the CAT-M card

    5. Therefore, I want to confirm the nRF9160 module

    Modem 1.3.1

    The SDK 1.9.1

    Whether the network mode is cat-M automatically identified

    Thank you for all your assistance.
    Kind regards,
    Peter.Min

  • 0 in reply to user83603

    Hi Peter,

    peter.min said:
    4. However, according to the customer's feedback, it is set to NB mode and automatically connected to CAT-M network after inserting the CAT-M card

    Not sure how this cloud happen. I did a test on my side with the same setup+sim card that only supports LTE-M, you can find the following log:

    As you can see the device can find an NB cell station but can not register to it. I suggest you check with customers and request a similar test log from them to see if we can repeat it.

    Best regards,
    Charlie

  • 0 in reply to user93921

    Hi Charlie,

    1. Restore factory Settings

    2. The network injection test starts. By default, the NB network cannot be connected

    Does the above test mean that the default is cat-M network

    Thank you for all your assistance.
    Kind regards,
    Peter.Min

  • +1 in reply to user83603

    Hi Peter,

    Sorry for the late reply. I am just back from Easter vacation.

    Yes, I can confirm your assumption. The default setting of XSYSTEMMODE is 1,0,0,0, after reset, which means only LTE-M support is enabled according to

    https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/xsystemmode_set.html

    Best regards,

    Charlie

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