case about nRF9160 offline and reconnect

Question

Hi,

1. How to prohibit nRF9160 from automatically re-registering to NB network after disconnection(This is to solve the problem of high power consumption when signal is poor)

2. Problem description: When nRF9160 is registered to NB network(+CIND: "service",1), nRF9160 is put into the shielded room (without NB signal) and disconnected from the base station (+CIND: "service",0). Wait for 3 minutes, then open the shielded room, and nRF9160 is re-registered to NB network (+CIND: "service",1).

Dk :PCA10090 0.9.0 SDK: NCS v1.9.1 Example: serial_lte_modem

4. Reoccurrence scenario: see log,

2022-05-17T09:00:13.347Z DEBUG Application data folder: C:\Users\Peter\AppData\Roaming\nrfconnect\pc-nrfconnect-linkmonitor
2022-05-17T09:00:13.419Z INFO Using nrf-device-lib-js version: 0.4.5
2022-05-17T09:00:13.419Z INFO Using nrf-device-lib version: 0.11.0
2022-05-17T09:00:13.419Z INFO Using nrfjprog DLL version: 10.15.1
2022-05-17T09:00:13.419Z INFO Using JLink version: JLink_V7.64b
2022-05-17T09:00:13.446Z DEBUG App pc-nrfconnect-linkmonitor v2.0.1 official
2022-05-17T09:00:13.446Z DEBUG App path: C:\Users\Peter\.nrfconnect-apps\node_modules\pc-nrfconnect-linkmonitor
2022-05-17T09:00:13.446Z DEBUG nRFConnect 3.11.0, required by the app is (^3.8.0)
2022-05-17T09:00:13.446Z DEBUG nRFConnect path: C:\Users\Peter\AppData\Local\Programs\nrfconnect\resources\app.asar
2022-05-17T09:00:13.446Z DEBUG HomeDir: C:\Users\Peter
2022-05-17T09:00:13.446Z DEBUG TmpDir: C:\Users\Peter\AppData\Local\Temp
2022-05-17T09:00:13.448Z INFO Installed JLink version does not match the provided version (V7.58b)
2022-05-17T09:00:15.408Z INFO Modem port is opened
2022-05-17T09:00:15.422Z DEBUG modem >> AT+CFUN?
2022-05-17T09:00:15.444Z DEBUG modem << +CFUN: 0
2022-05-17T09:00:15.446Z DEBUG modem << OK
2022-05-17T09:00:25.219Z DEBUG modem >> AT+CEREG=2
2022-05-17T09:00:25.234Z DEBUG modem << OK
2022-05-17T09:00:26.198Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2022-05-17T09:00:26.215Z DEBUG modem << OK
2022-05-17T09:00:28.587Z DEBUG modem >> AT+CFUN=1
2022-05-17T09:00:28.632Z DEBUG modem << OK
2022-05-17T09:00:30.775Z INFO Modem port is closed
2022-05-17T09:00:30.793Z INFO Modem port is opened
2022-05-17T09:00:30.801Z DEBUG modem >> AT+CFUN?
2022-05-17T09:00:30.817Z DEBUG modem << +CFUN: 1
2022-05-17T09:00:30.820Z DEBUG modem << OK
2022-05-17T09:00:30.829Z DEBUG modem >> AT+CGSN=1
2022-05-17T09:00:30.847Z DEBUG modem << +CGSN: "352656100375701"
2022-05-17T09:00:30.849Z DEBUG modem << OK
2022-05-17T09:00:30.851Z DEBUG modem >> AT+CGMI
2022-05-17T09:00:30.870Z DEBUG modem << Nordic Semiconductor ASA
2022-05-17T09:00:30.873Z DEBUG modem << OK
2022-05-17T09:00:30.877Z DEBUG modem >> AT+CGMM
2022-05-17T09:00:30.894Z DEBUG modem << nRF9160-SICA
2022-05-17T09:00:30.896Z DEBUG modem << OK
2022-05-17T09:00:30.898Z DEBUG modem >> AT+CGMR
2022-05-17T09:00:30.912Z DEBUG modem << mfw_nrf9160_1.3.1
2022-05-17T09:00:30.914Z DEBUG modem << OK
2022-05-17T09:00:30.915Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.3.1] SerNr: 352656100375701
2022-05-17T09:00:30.917Z DEBUG modem >> AT+CEMODE?
2022-05-17T09:00:30.932Z DEBUG modem << +CEMODE: 0
2022-05-17T09:00:30.933Z DEBUG modem << OK
2022-05-17T09:00:30.944Z DEBUG modem >> AT%XCBAND=?
2022-05-17T09:00:30.963Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2022-05-17T09:00:30.966Z DEBUG modem << OK
2022-05-17T09:00:30.976Z DEBUG modem >> AT+CMEE?
2022-05-17T09:00:30.993Z DEBUG modem << +CMEE: 0
2022-05-17T09:00:30.994Z DEBUG modem << OK
2022-05-17T09:00:30.996Z DEBUG modem >> AT+CMEE=1
2022-05-17T09:00:31.010Z DEBUG modem << OK
2022-05-17T09:00:31.013Z DEBUG modem >> AT+CNEC?
2022-05-17T09:00:31.027Z DEBUG modem << +CNEC: 0
2022-05-17T09:00:31.029Z DEBUG modem << OK
2022-05-17T09:00:31.033Z DEBUG modem >> AT+CNEC=24
2022-05-17T09:00:31.047Z DEBUG modem << OK
2022-05-17T09:00:31.049Z DEBUG modem >> AT+CGEREP?
2022-05-17T09:00:31.058Z DEBUG modem << +CGEREP: 0,0
2022-05-17T09:00:31.060Z DEBUG modem << OK
2022-05-17T09:00:31.065Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:00:31.077Z DEBUG modem << OK
2022-05-17T09:00:31.079Z DEBUG modem >> AT+CGACT?
2022-05-17T09:00:31.091Z DEBUG modem << OK
2022-05-17T09:00:31.094Z DEBUG modem >> AT+CGEREP=1
2022-05-17T09:00:31.107Z DEBUG modem << OK
2022-05-17T09:00:31.111Z DEBUG modem >> AT+CIND=1,1,1
2022-05-17T09:00:31.124Z DEBUG modem << OK
2022-05-17T09:00:31.131Z DEBUG modem >> AT+CEREG=5
2022-05-17T09:00:31.144Z DEBUG modem << OK
2022-05-17T09:00:31.148Z DEBUG modem >> AT+CEREG?
2022-05-17T09:00:31.162Z DEBUG modem << +CEREG: 5,4
2022-05-17T09:00:31.165Z DEBUG modem << OK
2022-05-17T09:00:31.177Z DEBUG modem >> AT%CESQ=1
2022-05-17T09:00:31.193Z DEBUG modem << OK
2022-05-17T09:00:31.198Z DEBUG modem >> AT+CESQ
2022-05-17T09:00:31.213Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2022-05-17T09:00:31.214Z DEBUG modem << OK
2022-05-17T09:00:31.224Z DEBUG modem >> AT%XSIM=1
2022-05-17T09:00:31.240Z DEBUG modem << OK
2022-05-17T09:00:31.244Z DEBUG modem >> AT%XSIM?
2022-05-17T09:00:31.258Z DEBUG modem << %XSIM: 1
2022-05-17T09:00:31.261Z DEBUG modem << OK
2022-05-17T09:00:31.274Z DEBUG modem >> AT+CPIN?
2022-05-17T09:00:31.292Z DEBUG modem << +CPIN: READY
2022-05-17T09:00:31.294Z DEBUG modem << OK
2022-05-17T09:00:31.312Z DEBUG modem >> AT+CPINR="SIM PIN"
2022-05-17T09:00:31.338Z DEBUG modem << +CPINR: "SIM PIN",3
2022-05-17T09:00:31.341Z DEBUG modem << OK
2022-05-17T09:00:31.346Z DEBUG modem >> AT+CIMI
2022-05-17T09:00:31.362Z DEBUG modem << 460046428407776
2022-05-17T09:00:31.365Z DEBUG modem << 
2022-05-17T09:00:31.367Z DEBUG modem << OK
2022-05-17T09:00:31.370Z INFO IMSIdentity: 460046428407776
2022-05-17T09:00:33.949Z DEBUG modem << %CESQ: 47,2,12,1
2022-05-17T09:00:33.968Z DEBUG modem << +CEREG: 2,"1D2C","0D71BD4B",9
2022-05-17T09:00:36.980Z DEBUG modem << +CGEV: ME PDN ACT 0,0
2022-05-17T09:00:36.994Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:00:36.997Z DEBUG modem << +CNEC_ESM: 50,0
2022-05-17T09:00:36.998Z DEBUG modem << +CEREG: 1,"1D2C","0D71BD4B",9,,,"11100000","11100000"
2022-05-17T09:00:37.001Z DEBUG modem << +CIND: "service",1
2022-05-17T09:00:37.008Z DEBUG modem << 
2022-05-17T09:00:37.010Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:00:37.011Z DEBUG modem << OK
2022-05-17T09:00:37.022Z DEBUG modem >> AT+CGACT?
2022-05-17T09:00:37.030Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:00:37.036Z DEBUG modem << OK
2022-05-17T09:00:37.196Z DEBUG modem << %CESQ: 47,2,17,2
2022-05-17T09:00:38.195Z DEBUG modem << %CESQ: 48,2,8,1
2022-05-17T09:00:38.395Z DEBUG modem << %CESQ: 45,2,0,0
2022-05-17T09:00:38.795Z DEBUG modem << %CESQ: 48,2,5,0
2022-05-17T09:00:39.197Z DEBUG modem << %CESQ: 47,2,0,0
2022-05-17T09:00:40.397Z DEBUG modem << %CESQ: 44,2,5,0
2022-05-17T09:00:41.398Z DEBUG modem << %CESQ: 42,2,10,1
2022-05-17T09:00:42.197Z DEBUG modem << %CESQ: 37,1,3,0
2022-05-17T09:00:43.397Z DEBUG modem << %CESQ: 28,1,0,0
2022-05-17T09:00:44.197Z DEBUG modem << %CESQ: 33,1,0,0
2022-05-17T09:00:44.828Z DEBUG modem << %CESQ: 45,2,17,2
2022-05-17T09:00:44.835Z DEBUG modem << +CEREG: 1,"1D2D","008D2751",9,,,"11100000","11100000"
2022-05-17T09:00:44.843Z DEBUG modem >> AT+COPS=3,2
2022-05-17T09:00:44.862Z DEBUG modem << OK
2022-05-17T09:00:44.866Z DEBUG modem >> AT+COPS?
2022-05-17T09:00:44.885Z DEBUG modem << +COPS: 0,2,"46000",9
2022-05-17T09:00:44.887Z DEBUG modem << OK
2022-05-17T09:00:44.896Z DEBUG modem >> AT%XCBAND
2022-05-17T09:00:44.907Z DEBUG modem << %XCBAND: 8
2022-05-17T09:00:44.909Z DEBUG modem << OK
2022-05-17T09:00:44.919Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:00:44.931Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:00:44.933Z DEBUG modem << OK
2022-05-17T09:00:44.946Z DEBUG modem >> AT+CGACT?
2022-05-17T09:00:44.953Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:00:44.955Z DEBUG modem << OK
2022-05-17T09:00:45.099Z DEBUG modem << %CESQ: 44,2,11,1
2022-05-17T09:00:49.188Z DEBUG modem << %CESQ: 39,1,11,1
2022-05-17T09:00:49.208Z DEBUG modem << +CEREG: 1,"1D2D","02CE7411",9,,,"11100000","11100000"
2022-05-17T09:00:49.219Z DEBUG modem >> AT+COPS=3,2
2022-05-17T09:00:49.237Z DEBUG modem << OK
2022-05-17T09:00:49.243Z DEBUG modem >> AT+COPS?
2022-05-17T09:00:49.263Z DEBUG modem << +COPS: 0,2,"46000",9
2022-05-17T09:00:49.265Z DEBUG modem << OK
2022-05-17T09:00:49.269Z DEBUG modem >> AT%XCBAND
2022-05-17T09:00:49.285Z DEBUG modem << %XCBAND: 8
2022-05-17T09:00:49.287Z DEBUG modem << OK
2022-05-17T09:00:49.296Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:00:49.323Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:00:49.325Z DEBUG modem << 
2022-05-17T09:00:49.326Z DEBUG modem << OK
2022-05-17T09:00:49.329Z DEBUG modem >> AT+CGACT?
2022-05-17T09:00:49.345Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:00:49.347Z DEBUG modem << OK
2022-05-17T09:00:54.320Z DEBUG modem << %CESQ: 36,1,6,0
2022-05-17T09:00:56.869Z DEBUG modem << %CESQ: 30,1,0,0
2022-05-17T09:00:59.440Z DEBUG modem << %CESQ: 35,1,9,1
2022-05-17T09:01:02.026Z DEBUG modem << %CESQ: 36,1,0,0
2022-05-17T09:01:04.560Z DEBUG modem << %CESQ: 40,2,11,1
2022-05-17T09:01:07.146Z DEBUG modem << %CESQ: 30,1,0,0
2022-05-17T09:01:09.680Z DEBUG modem << %CESQ: 39,1,7,1
2022-05-17T09:01:12.229Z DEBUG modem << %CESQ: 30,1,0,0
2022-05-17T09:01:14.800Z DEBUG modem << %CESQ: 20,1,0,0
2022-05-17T09:01:19.920Z DEBUG modem << %CESQ: 26,1,0,0
2022-05-17T09:01:22.469Z DEBUG modem << %CESQ: 36,1,10,1
2022-05-17T09:01:25.041Z DEBUG modem << %CESQ: 34,1,4,0
2022-05-17T09:01:27.589Z DEBUG modem << %CESQ: 27,1,0,0
2022-05-17T09:01:30.160Z DEBUG modem << %CESQ: 12,0,0,0
2022-05-17T09:01:32.709Z DEBUG modem << %CESQ: 30,1,1,0
2022-05-17T09:01:37.830Z DEBUG modem << %CESQ: 19,0,0,0
2022-05-17T09:01:40.400Z DEBUG modem << %CESQ: 24,1,0,0
2022-05-17T09:01:40.589Z DEBUG modem << %CESQ: 31,1,4,0
2022-05-17T09:01:40.611Z DEBUG modem << +CEREG: 1,"1D2D","0D715F4B",9,,,"11100000","11100000"
2022-05-17T09:01:40.624Z DEBUG modem >> AT+COPS=3,2
2022-05-17T09:01:40.634Z DEBUG modem << OK
2022-05-17T09:01:40.638Z DEBUG modem >> AT+COPS?
2022-05-17T09:01:40.653Z DEBUG modem << +COPS: 0,2,"46000",9
2022-05-17T09:01:40.655Z DEBUG modem << OK
2022-05-17T09:01:40.660Z DEBUG modem >> AT%XCBAND
2022-05-17T09:01:40.672Z DEBUG modem << %XCBAND: 8
2022-05-17T09:01:40.673Z DEBUG modem << 
2022-05-17T09:01:40.675Z DEBUG modem << OK
2022-05-17T09:01:40.687Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:01:40.707Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:01:40.709Z DEBUG modem << OK
2022-05-17T09:01:40.722Z DEBUG modem >> AT+CGACT?
2022-05-17T09:01:40.738Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:01:40.740Z DEBUG modem << OK
2022-05-17T09:02:05.967Z DEBUG modem << %CESQ: 0,0,0,0
2022-05-17T09:02:29.008Z DEBUG modem << %CESQ: 255,0,255,0
2022-05-17T09:02:29.026Z DEBUG modem << +CEREG: 2
2022-05-17T09:02:29.034Z DEBUG modem << +CIND: "service",0
2022-05-17T09:02:37.043Z DEBUG modem << +CEREG: 4
2022-05-17T09:03:43.639Z DEBUG modem << %CESQ: 11,0,4,0
2022-05-17T09:03:43.650Z DEBUG modem << +CEREG: 1,"1D2D","0D716B4F",9,,,"11100000","11100000"
2022-05-17T09:03:43.660Z DEBUG modem << +CIND: "service",1
2022-05-17T09:03:43.670Z DEBUG modem >> AT+COPS=3,2
2022-05-17T09:03:43.677Z DEBUG modem << OK
2022-05-17T09:03:43.681Z DEBUG modem >> AT+COPS?
2022-05-17T09:03:43.689Z DEBUG modem << +COPS: 0,2,"46000",9
2022-05-17T09:03:43.691Z DEBUG modem << OK
2022-05-17T09:03:43.700Z DEBUG modem >> AT%XCBAND
2022-05-17T09:03:43.708Z DEBUG modem << %XCBAND: 8
2022-05-17T09:03:43.710Z DEBUG modem << 
2022-05-17T09:03:43.711Z DEBUG modem << OK
2022-05-17T09:03:43.714Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:03:43.731Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:03:43.735Z DEBUG modem << 
2022-05-17T09:03:43.737Z DEBUG modem << OK
2022-05-17T09:03:43.741Z DEBUG modem >> AT+CGACT?
2022-05-17T09:03:43.749Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:03:43.750Z DEBUG modem << OK
2022-05-17T09:03:50.910Z DEBUG modem << %CESQ: 13,0,9,1
2022-05-17T09:03:53.680Z DEBUG modem << %CESQ: 8,0,0,0
2022-05-17T09:04:26.926Z DEBUG modem << %CESQ: 12,0,7,1
2022-05-17T09:04:39.562Z DEBUG modem << %CESQ: 12,0,2,0
2022-05-17T09:04:42.288Z DEBUG modem << %CESQ: 13,0,8,1
2022-05-17T09:04:50.000Z DEBUG modem << %CESQ: 12,0,1,0
2022-05-17T09:05:02.766Z DEBUG modem << %CESQ: 14,0,8,1
2022-05-17T09:05:13.006Z DEBUG modem << %CESQ: 10,0,0,0
2022-05-17T09:05:29.079Z DEBUG modem >> AT+CEREG=?
2022-05-17T09:05:29.095Z DEBUG modem << +CEREG: (0,1,2)
2022-05-17T09:05:29.098Z DEBUG modem << OK
2022-05-17T09:05:30.960Z DEBUG modem << %CESQ: 16,0,8,1
2022-05-17T09:05:36.081Z DEBUG modem << %CESQ: 12,0,2,0
2022-05-17T09:05:56.361Z DEBUG modem << %CESQ: 5,0,0,0
2022-05-17T09:05:59.087Z DEBUG modem << %CESQ: 11,0,3,0
2022-05-17T09:06:04.118Z DEBUG modem << %CESQ: 14,0,10,1
2022-05-17T09:06:06.801Z DEBUG modem << %CESQ: 13,0,3,0
2022-05-17T09:06:11.843Z DEBUG modem << %CESQ: 16,0,10,1
2022-05-17T09:06:17.041Z DEBUG modem << %CESQ: 13,0,0,0
2022-05-17T09:06:19.567Z DEBUG modem << %CESQ: 14,0,6,0
2022-05-17T09:06:21.962Z DEBUG modem << %CESQ: 12,0,0,0
2022-05-17T09:06:27.083Z DEBUG modem << %CESQ: 18,0,5,0
2022-05-17T09:06:29.808Z DEBUG modem << %CESQ: 12,0,0,0
2022-05-17T09:06:34.927Z DEBUG modem << %CESQ: 13,0,6,0
2022-05-17T09:06:37.522Z DEBUG modem << %CESQ: 11,0,0,0
2022-05-17T09:06:47.763Z DEBUG modem << %CESQ: 14,0,8,1
2022-05-17T09:06:50.288Z DEBUG modem << %CESQ: 12,0,3,0
2022-05-17T09:07:00.352Z DEBUG modem << %CESQ: 13,0,8,1
2022-05-17T09:07:03.121Z DEBUG modem << %CESQ: 13,0,2,0
2022-05-17T09:07:05.649Z DEBUG modem << %CESQ: 16,0,7,1
2022-05-17T09:07:13.362Z DEBUG modem << %CESQ: 11,0,0,0
2022-05-17T09:07:18.482Z DEBUG modem << %CESQ: 31,1,0,0
2022-05-17T09:07:21.008Z DEBUG modem << %CESQ: 37,1,14,2
2022-05-17T09:08:07.091Z DEBUG modem << %CESQ: 255,0,255,0
2022-05-17T09:08:07.096Z DEBUG modem << +CEREG: 2
2022-05-17T09:08:07.100Z DEBUG modem << +CIND: "service",0
2022-05-17T09:08:15.159Z DEBUG modem << +CEREG: 4
2022-05-17T09:13:20.748Z DEBUG modem >> AT+CEREG=?
2022-05-17T09:13:20.758Z DEBUG modem << +CEREG: (0,1,2)
2022-05-17T09:13:20.760Z DEBUG modem << OK
2022-05-17T09:14:24.309Z DEBUG modem >> AT+CEREG=?
2022-05-17T09:14:24.327Z DEBUG modem << +CEREG: (0,1,2)
2022-05-17T09:14:24.329Z DEBUG modem << OK
2022-05-17T09:14:36.578Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:14:36.598Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:14:36.605Z DEBUG modem << OK
2022-05-17T09:14:52.486Z DEBUG modem << %CESQ: 41,2,15,2
2022-05-17T09:14:52.505Z DEBUG modem << +CEREG: 1,"1D2D","0D715F4B",9,,,"11100000","11100000"
2022-05-17T09:14:52.514Z DEBUG modem << +CIND: "service",1
2022-05-17T09:14:52.524Z DEBUG modem >> AT+COPS=3,2
2022-05-17T09:14:52.535Z DEBUG modem << OK
2022-05-17T09:14:52.538Z DEBUG modem >> AT+COPS?
2022-05-17T09:14:52.555Z DEBUG modem << +COPS: 0,2,"46000",9
2022-05-17T09:14:52.556Z DEBUG modem << OK
2022-05-17T09:14:52.567Z DEBUG modem >> AT%XCBAND
2022-05-17T09:14:52.584Z DEBUG modem << %XCBAND: 8
2022-05-17T09:14:52.585Z DEBUG modem << OK
2022-05-17T09:14:52.589Z DEBUG modem >> AT+CGDCONT?
2022-05-17T09:14:52.608Z DEBUG modem << +CGDCONT: 0,"IP","cmnbiot","100.82.186.118",0,0
2022-05-17T09:14:52.617Z DEBUG modem << OK
2022-05-17T09:14:52.623Z DEBUG modem >> AT+CGACT?
2022-05-17T09:14:52.638Z DEBUG modem << +CGACT: 0,1
2022-05-17T09:14:52.640Z DEBUG modem << 
2022-05-17T09:14:52.641Z DEBUG modem << OK
2022-05-17T09:15:04.212Z DEBUG modem << %CESQ: 40,2,9,1
2022-05-17T09:15:06.771Z DEBUG modem << %CESQ: 40,2,14,2
2022-05-17T09:15:09.334Z DEBUG modem << %CESQ: 37,1,8,1
2022-05-17T09:15:24.692Z DEBUG modem << %CESQ: 41,2,13,1
2022-05-17T09:15:27.251Z DEBUG modem << %CESQ: 40,2,21,3
2022-05-17T09:15:29.814Z DEBUG modem << %CESQ: 43,2,14,2
2022-05-17T09:15:32.371Z DEBUG modem << %CESQ: 40,2,21,3
2022-05-17T09:15:34.933Z DEBUG modem << %CESQ: 41,2,11,1

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

Charlie · Accepted Answer

Hi Peter, 
 From my understanding, you are simulating this poor signal condition and expect the nRF9160 Modem could shut down itself? 
 If this is your need, you can do this on your application logic. Keep monitoring signal quality, shut down/turn on the modem according to a threshold. 
 I am not sure if I understand your request. Just give you some comments and we can continue the discussion if you need. 
 Best regards, 
 Charlie

case about nRF9160 offline and reconnect

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