case about nRF9160 CAT-NB1 or CAT-M1

[peter.min]

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

[Charlie]

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

[peter.min]

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

[Charlie]

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:

Fullscreen 2022-04-04T12_30_28.663Z-log.txt Download

2022-04-04T12:30:29.768Z INFO Application data folder: C:\Users\chs1\AppData\Roaming\nrfconnect\pc-nrfconnect-linkmonitor
2022-04-04T12:30:29.833Z DEBUG App pc-nrfconnect-linkmonitor v2.0.0 official
2022-04-04T12:30:29.833Z DEBUG App path: C:\Users\chs1\.nrfconnect-apps\node_modules\pc-nrfconnect-linkmonitor
2022-04-04T12:30:29.833Z DEBUG nRFConnect 3.10.0, required by the app is (^3.8.0)
2022-04-04T12:30:29.833Z DEBUG nRFConnect path: C:\Users\chs1\AppData\Local\Programs\nrfconnect\resources\app.asar
2022-04-04T12:30:29.833Z DEBUG HomeDir: C:\Users\chs1
2022-04-04T12:30:29.834Z DEBUG TmpDir: C:\Users\chs1\AppData\Local\Temp
2022-04-04T12:30:32.837Z INFO Modem port is opened
2022-04-04T12:30:32.844Z DEBUG modem >> AT+CFUN?
2022-04-04T12:30:32.855Z DEBUG modem << +CFUN: 0
2022-04-04T12:30:32.857Z DEBUG modem << OK
2022-04-04T12:30:35.351Z DEBUG modem >> AT+CFUN?
2022-04-04T12:30:35.363Z DEBUG modem << +CFUN: 0
2022-04-04T12:30:35.372Z DEBUG modem << OK
2022-04-04T12:31:10.816Z DEBUG modem >> AT%XSYSTEMMODE=0,1,0,0
2022-04-04T12:31:10.830Z DEBUG modem << OK
2022-04-04T12:31:13.098Z DEBUG modem >> AT+CFUN?
2022-04-04T12:31:13.111Z DEBUG modem << +CFUN: 0
2022-04-04T12:31:13.118Z DEBUG modem << OK
2022-04-04T12:31:19.234Z DEBUG modem >> AT%XSYSTEMMODE?
2022-04-04T12:31:19.249Z DEBUG modem << %XSYSTEMMODE: 0,1,0,0
2022-04-04T12:31:19.252Z DEBUG modem << OK
2022-04-04T12:31:22.323Z DEBUG modem >> AT+CFUN=0
2022-04-04T12:31:22.340Z DEBUG modem << OK
2022-04-04T12:31:24.809Z DEBUG modem >> AT+CFUN?
2022-04-04T12:31:24.822Z DEBUG modem << +CFUN: 0
2022-04-04T12:31:24.827Z DEBUG modem << OK
2022-04-04T12:31:29.297Z DEBUG modem >> AT+CFUN?
2022-04-04T12:31:29.311Z DEBUG modem << +CFUN: 0
2022-04-04T12:31:29.318Z DEBUG modem << OK
2022-04-04T12:31:31.260Z DEBUG modem >> AT+CFUN=1
2022-04-04T12:31:31.296Z DEBUG modem << OK
2022-04-04T12:31:32.646Z DEBUG modem >> AT+CFUN?
2022-04-04T12:31:32.652Z DEBUG modem << +CFUN: 1
2022-04-04T12:31:32.658Z DEBUG modem << OK
2022-04-04T12:31:32.663Z DEBUG modem >> AT+CGSN=1
2022-04-04T12:31:32.669Z DEBUG modem << +CGSN: "351358815320178"
2022-04-04T12:31:32.671Z DEBUG modem << OK
2022-04-04T12:31:32.672Z DEBUG modem >> AT+CGMI
2022-04-04T12:31:32.680Z DEBUG modem << Nordic Semiconductor ASA
2022-04-04T12:31:32.681Z DEBUG modem << OK
2022-04-04T12:31:32.684Z DEBUG modem >> AT+CGMM
2022-04-04T12:31:32.689Z DEBUG modem << nRF9160-SICA
2022-04-04T12:31:32.691Z DEBUG modem << OK
2022-04-04T12:31:32.693Z DEBUG modem >> AT+CGMR
2022-04-04T12:31:32.698Z DEBUG modem << mfw_nrf9160_1.3.1
2022-04-04T12:31:32.699Z DEBUG modem << 
2022-04-04T12:31:32.700Z DEBUG modem << OK
2022-04-04T12:31:32.701Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.3.1] SerNr: 351358815320178
2022-04-04T12:31:32.702Z DEBUG modem >> AT+CEMODE?
2022-04-04T12:31:32.707Z DEBUG modem << +CEMODE: 0
2022-04-04T12:31:32.708Z DEBUG modem << OK
2022-04-04T12:31:32.714Z DEBUG modem >> AT%XCBAND=?
2022-04-04T12:31:32.723Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2022-04-04T12:31:32.724Z DEBUG modem << OK
2022-04-04T12:31:32.732Z DEBUG modem >> AT+CMEE?
2022-04-04T12:31:32.737Z DEBUG modem << +CMEE: 0
2022-04-04T12:31:32.738Z DEBUG modem << OK
2022-04-04T12:31:32.740Z DEBUG modem >> AT+CMEE=1
2022-04-04T12:31:32.745Z DEBUG modem << OK
2022-04-04T12:31:32.748Z DEBUG modem >> AT+CNEC?
2022-04-04T12:31:32.753Z DEBUG modem << +CNEC: 0
2022-04-04T12:31:32.754Z DEBUG modem << OK
2022-04-04T12:31:32.756Z DEBUG modem >> AT+CNEC=24
2022-04-04T12:31:32.763Z DEBUG modem << OK
2022-04-04T12:31:32.766Z DEBUG modem >> AT+CGEREP?
2022-04-04T12:31:32.772Z DEBUG modem << +CGEREP: 0,0
2022-04-04T12:31:32.773Z DEBUG modem << OK
2022-04-04T12:31:32.775Z DEBUG modem >> AT+CGDCONT?
2022-04-04T12:31:32.787Z DEBUG modem << OK
2022-04-04T12:31:32.791Z DEBUG modem >> AT+CGACT?
2022-04-04T12:31:32.797Z DEBUG modem << OK
2022-04-04T12:31:32.799Z DEBUG modem >> AT+CGEREP=1
2022-04-04T12:31:32.804Z DEBUG modem << OK
2022-04-04T12:31:32.808Z DEBUG modem >> AT+CIND=1,1,1
2022-04-04T12:31:32.813Z DEBUG modem << OK
2022-04-04T12:31:32.817Z DEBUG modem >> AT+CEREG=5
2022-04-04T12:31:32.821Z DEBUG modem << OK
2022-04-04T12:31:32.826Z DEBUG modem >> AT+CEREG?
2022-04-04T12:31:32.835Z DEBUG modem << +CEREG: 5,4
2022-04-04T12:31:32.837Z DEBUG modem << OK
2022-04-04T12:31:32.847Z DEBUG modem >> AT%CESQ=1
2022-04-04T12:31:32.851Z DEBUG modem << OK
2022-04-04T12:31:32.855Z DEBUG modem >> AT+CESQ
2022-04-04T12:31:32.867Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2022-04-04T12:31:32.869Z DEBUG modem << OK
2022-04-04T12:31:32.876Z DEBUG modem >> AT%XSIM=1
2022-04-04T12:31:32.881Z DEBUG modem << OK
2022-04-04T12:31:32.884Z DEBUG modem >> AT%XSIM?
2022-04-04T12:31:32.889Z DEBUG modem << %XSIM: 1
2022-04-04T12:31:32.890Z DEBUG modem << OK
2022-04-04T12:31:32.897Z DEBUG modem >> AT+CPIN?
2022-04-04T12:31:32.902Z DEBUG modem << +CPIN: READY
2022-04-04T12:31:32.903Z DEBUG modem << OK
2022-04-04T12:31:32.907Z DEBUG modem >> AT+CPINR="SIM PIN"
2022-04-04T12:31:32.918Z DEBUG modem << +CPINR: "SIM PIN",3
2022-04-04T12:31:32.919Z DEBUG modem << 
2022-04-04T12:31:32.920Z DEBUG modem << OK
2022-04-04T12:31:32.923Z DEBUG modem >> AT+CIMI
2022-04-04T12:31:32.934Z DEBUG modem << 204080813518390
2022-04-04T12:31:32.937Z DEBUG modem << OK
2022-04-04T12:31:32.939Z INFO IMSIdentity: 204080813518390
2022-04-04T12:31:37.733Z DEBUG modem << %CESQ: 30,1,25,3
2022-04-04T12:31:37.738Z DEBUG modem << +CEREG: 2,"0ED9","02010E27",9
2022-04-04T12:31:40.828Z DEBUG modem << +CNEC_EMM: 14
2022-04-04T12:31:40.831Z DEBUG modem << +CEREG: 2,"0ED9","02010E27",9,0,14
2022-04-04T12:32:01.769Z DEBUG modem << %CESQ: 25,1,24,3
2022-04-04T12:32:04.329Z DEBUG modem << %CESQ: 31,1,26,3
2022-04-04T12:32:35.968Z DEBUG modem >> AT%XSYSTEMMODE?
2022-04-04T12:32:35.976Z DEBUG modem << %XSYSTEMMODE: 0,1,0,0
2022-04-04T12:32:35.978Z DEBUG modem << OK
2022-04-04T12:33:03.211Z DEBUG modem << %CESQ: 26,1,25,3
2022-04-04T12:33:06.631Z DEBUG modem << %CESQ: 255,0,255,0
2022-04-04T12:33:11.617Z DEBUG modem << %CESQ: 73,3,21,3
2022-04-04T12:33:11.621Z DEBUG modem << +CEREG: 2,"9E99","031B4364",9
2022-04-04T12:33:15.495Z DEBUG modem << %CESQ: 73,3,26,3
2022-04-04T12:33:19.107Z DEBUG modem << %CESQ: 74,3,19,2
2022-04-04T12:33:23.175Z DEBUG modem << %CESQ: 72,3,24,3
2022-04-04T12:33:53.863Z DEBUG modem << +CNEC_ESM: 32,0
2022-04-04T12:33:53.866Z DEBUG modem << +CNEC_EMM: 19
2022-04-04T12:33:53.869Z DEBUG modem << +CEREG: 2,"9E99","031B4364",9,0,19
2022-04-04T12:34:32.272Z DEBUG modem << %CESQ: 77,3,25,3

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

[peter.min]

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

[Charlie]

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

[peter.min]

Hi Charlie,

Thank you for your confirmation

Kind regards,

Peter.Min