nrf9160 : NB-IoT not able to connect

[Aswin P V]

Hi,

We are trying to connect to NB-IoT network but seems nrf9160 not able to connect. We are trying with an NB-IoT SIM in Malaysia. Below is the log captured using LTE Link Monitor.

In the log , we are seeing "+CGEV: ME DETACH" which means Mobile equipment detach. 

Can you please help us in understanding what is wrong ?

Our sim vendor said APN name is "yesiot" , we tried setting that also. But still not able to connect to network.

Also attaching the modem trace collected using "NRF Trace Collector" and enodeb trace collected by our network team.

Please see the attachments.

Log : 

2020-10-13T10:09:38.314Z INFO Modem port is opened
2020-10-13T10:09:38.329Z DEBUG modem >> AT+CFUN?
2020-10-13T10:09:38.565Z DEBUG modem << +CFUN: 0
2020-10-13T10:09:38.596Z DEBUG modem << OK
2020-10-13T10:09:46.932Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2020-10-13T10:09:46.958Z DEBUG modem << OK
2020-10-13T10:09:50.513Z DEBUG modem >> AT+CFUN=1
2020-10-13T10:09:50.598Z DEBUG modem << OK
2020-10-13T10:09:52.061Z DEBUG modem >> AT+CFUN?
2020-10-13T10:09:52.145Z DEBUG modem << +CFUN: 1
2020-10-13T10:09:52.175Z DEBUG modem << OK
2020-10-13T10:09:52.182Z DEBUG modem >> AT+CGSN=1
2020-10-13T10:09:52.194Z DEBUG modem << +CGSN: "352656100367617"
2020-10-13T10:09:52.198Z DEBUG modem << OK
2020-10-13T10:09:52.204Z DEBUG modem >> AT+CGMI
2020-10-13T10:09:52.227Z DEBUG modem << Nordic Semiconductor ASA
2020-10-13T10:09:52.237Z DEBUG modem << OK
2020-10-13T10:09:52.257Z DEBUG modem >> AT+CGMM
2020-10-13T10:09:52.281Z DEBUG modem << nRF9160-SICA
2020-10-13T10:09:52.286Z DEBUG modem << OK
2020-10-13T10:09:52.310Z DEBUG modem >> AT+CGMR
2020-10-13T10:09:52.334Z DEBUG modem << mfw_nrf9160_1.2.0
2020-10-13T10:09:52.339Z DEBUG modem << OK
2020-10-13T10:09:52.343Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.2.0] SerNr: 352656100367617
2020-10-13T10:09:52.350Z DEBUG modem >> AT+CEMODE?
2020-10-13T10:09:52.366Z DEBUG modem << +CEMODE: 0
2020-10-13T10:09:52.375Z DEBUG modem << OK
2020-10-13T10:09:52.410Z DEBUG modem >> AT%XCBAND=?
2020-10-13T10:09:52.432Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2020-10-13T10:09:52.437Z DEBUG modem << OK
2020-10-13T10:09:52.469Z DEBUG modem >> AT+CMEE?
2020-10-13T10:09:52.481Z DEBUG modem << +CMEE: 0
2020-10-13T10:09:52.492Z DEBUG modem << OK
2020-10-13T10:09:52.514Z DEBUG modem >> AT+CMEE=1
2020-10-13T10:09:52.544Z DEBUG modem << OK
2020-10-13T10:09:52.579Z DEBUG modem >> AT+CNEC?
2020-10-13T10:09:52.624Z DEBUG modem << +CNEC: 0
2020-10-13T10:09:52.633Z DEBUG modem << OK
2020-10-13T10:09:52.648Z DEBUG modem >> AT+CNEC=24
2020-10-13T10:09:52.667Z DEBUG modem << OK
2020-10-13T10:09:52.676Z DEBUG modem >> AT+CGEREP?
2020-10-13T10:09:52.683Z DEBUG modem << +CGEREP: 0,0
2020-10-13T10:09:52.687Z DEBUG modem << OK
2020-10-13T10:09:52.698Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:09:52.714Z DEBUG modem << OK
2020-10-13T10:09:52.729Z DEBUG modem >> AT+CGACT?
2020-10-13T10:09:52.744Z DEBUG modem << OK
2020-10-13T10:09:52.748Z DEBUG modem >> AT+CGEREP=1
2020-10-13T10:09:52.761Z DEBUG modem << OK
2020-10-13T10:09:52.769Z DEBUG modem >> AT+CIND=1,1,1
2020-10-13T10:09:52.797Z DEBUG modem << OK
2020-10-13T10:09:52.801Z DEBUG modem >> AT+CEREG=2
2020-10-13T10:09:52.826Z DEBUG modem << OK
2020-10-13T10:09:52.844Z DEBUG modem >> AT+CEREG?
2020-10-13T10:09:52.863Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",9
2020-10-13T10:09:52.876Z DEBUG modem << OK
2020-10-13T10:09:52.898Z DEBUG modem >> AT%CESQ=1
2020-10-13T10:09:52.909Z DEBUG modem << OK
2020-10-13T10:09:52.917Z DEBUG modem >> AT+CESQ
2020-10-13T10:09:52.946Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2020-10-13T10:09:52.950Z DEBUG modem << OK
2020-10-13T10:09:52.966Z DEBUG modem >> AT%XSIM=1
2020-10-13T10:09:52.996Z DEBUG modem << OK
2020-10-13T10:09:53.010Z DEBUG modem >> AT%XSIM?
2020-10-13T10:09:53.040Z DEBUG modem << %XSIM: 0
2020-10-13T10:09:53.044Z DEBUG modem << OK
2020-10-13T10:09:54.654Z DEBUG modem << %XSIM: 1
2020-10-13T10:09:54.713Z DEBUG modem >> AT+CPIN?
2020-10-13T10:09:54.762Z DEBUG modem << +CPIN: READY
2020-10-13T10:09:54.772Z DEBUG modem << OK
2020-10-13T10:09:54.826Z DEBUG modem >> AT+CPINR="SIM PIN"
2020-10-13T10:09:54.858Z DEBUG modem << +CPINR: "SIM PIN",3
2020-10-13T10:09:54.864Z DEBUG modem << OK
2020-10-13T10:09:54.895Z DEBUG modem >> AT+CIMI
2020-10-13T10:09:54.920Z DEBUG modem << 502151044530005
2020-10-13T10:09:54.927Z DEBUG modem << OK
2020-10-13T10:09:54.931Z INFO IMSIdentity: 502151044530005
2020-10-13T10:10:47.274Z DEBUG modem << %CESQ: 88,4,26,3
2020-10-13T10:10:47.330Z DEBUG modem << +CEREG: 2,"0888","0003EA0B",9
2020-10-13T10:10:49.214Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:10:49.251Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:10:49.262Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:10:49.283Z DEBUG modem << OK
2020-10-13T10:10:49.356Z DEBUG modem >> AT+CGACT?
2020-10-13T10:10:49.381Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:10:49.392Z DEBUG modem << OK
2020-10-13T10:11:01.112Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:11:01.170Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:11:01.207Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:11:01.227Z DEBUG modem << OK
2020-10-13T10:11:01.287Z DEBUG modem >> AT+CGACT?
2020-10-13T10:11:01.294Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:11:01.298Z DEBUG modem <<
2020-10-13T10:11:01.300Z DEBUG modem << OK
2020-10-13T10:11:12.993Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:11:13.025Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:11:13.038Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:11:13.044Z DEBUG modem << OK
2020-10-13T10:11:13.087Z DEBUG modem >> AT+CGACT?
2020-10-13T10:11:13.100Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:11:13.108Z DEBUG modem << OK
2020-10-13T10:11:25.162Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:11:25.217Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:11:25.264Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:11:25.277Z DEBUG modem << OK
2020-10-13T10:11:25.353Z DEBUG modem >> AT+CGACT?
2020-10-13T10:11:25.393Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:11:25.398Z DEBUG modem << OK
2020-10-13T10:11:37.226Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:11:37.270Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:11:37.311Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:11:37.321Z DEBUG modem << OK
2020-10-13T10:11:37.373Z DEBUG modem >> AT+CGACT?
2020-10-13T10:11:37.381Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:11:37.385Z DEBUG modem << OK
2020-10-13T10:11:49.111Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:11:49.184Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:11:49.211Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:11:49.216Z DEBUG modem << OK
2020-10-13T10:11:49.241Z DEBUG modem >> AT+CGACT?
2020-10-13T10:11:49.248Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:11:49.266Z DEBUG modem <<
2020-10-13T10:11:49.275Z DEBUG modem << OK
2020-10-13T10:12:01.007Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:12:01.059Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:12:01.092Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:12:01.097Z DEBUG modem << OK
2020-10-13T10:12:01.142Z DEBUG modem >> AT+CGACT?
2020-10-13T10:12:01.156Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:12:01.161Z DEBUG modem << OK
2020-10-13T10:12:13.025Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:12:13.061Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:12:13.072Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:12:13.077Z DEBUG modem << OK
2020-10-13T10:12:13.117Z DEBUG modem >> AT+CGACT?
2020-10-13T10:12:13.126Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:12:13.161Z DEBUG modem << OK
2020-10-13T10:12:24.894Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:12:24.945Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:12:24.957Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:12:24.962Z DEBUG modem << OK
2020-10-13T10:12:25.016Z DEBUG modem >> AT+CGACT?
2020-10-13T10:12:25.029Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:12:25.034Z DEBUG modem << OK
2020-10-13T10:12:36.746Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:12:36.776Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:12:36.783Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:12:36.791Z DEBUG modem <<
2020-10-13T10:12:36.792Z DEBUG modem << OK
2020-10-13T10:12:36.821Z DEBUG modem >> AT+CGACT?
2020-10-13T10:12:36.828Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:12:36.840Z DEBUG modem << OK
2020-10-13T10:12:48.624Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:12:48.668Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:12:48.683Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:12:48.690Z DEBUG modem << OK
2020-10-13T10:12:48.750Z DEBUG modem >> AT+CGACT?
2020-10-13T10:12:48.759Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:12:48.766Z DEBUG modem << OK
2020-10-13T10:13:00.469Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:13:00.516Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:13:00.530Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:13:00.535Z DEBUG modem << OK
2020-10-13T10:13:00.605Z DEBUG modem >> AT+CGACT?
2020-10-13T10:13:00.614Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:13:00.617Z DEBUG modem << OK
2020-10-13T10:13:09.618Z DEBUG modem >> AT+CGDCONT=1,"IP",yesiot"
2020-10-13T10:13:10.619Z ERROR Error: 'AT+CGDCONT=1,"IP",yesiot"
' timed out
2020-10-13T10:13:12.363Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:13:12.395Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:13:24.430Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:13:36.381Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:13:48.515Z DEBUG modem << +CGEV: ME DETACH

2437.trace-2020-10-14T04-51-53.858Z.zip

Thanks in advance,

Aswin

[Øyvind]

Hello Aswin,

From the log you have posted, is line number 7 from the bottom the only place where you added the APN? If so, you are missing a quotation mark:

AT+CGDCONT=1,"IP",yesiot"

 It should be AT+CGDCONT=1,"IP","yesiot"

Kind regards,
Øyvind

[Aswin P V]

oh yes ... but i also tried with setting it properly. But I am getting the same results.

Any other issue in the log? Also can you advice how to troubleshoot this issue 

We would like to know when "+CGEV: ME DETACH" happens and possible reasons

Thanks!

[Aswin P V]

Below is the log with AT+CGDCONT command corrected .

2020-10-13T10:18:02.429Z DEBUG modem >> AT+CGDCONT=1,"IP","yesiot"
2020-10-13T10:18:02.470Z DEBUG modem << OK
2020-10-13T10:18:06.228Z DEBUG modem >> AT+CFUN?
2020-10-13T10:18:06.252Z DEBUG modem << +CFUN: 0
2020-10-13T10:18:06.263Z DEBUG modem << OK
2020-10-13T10:18:24.946Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2020-10-13T10:18:25.015Z DEBUG modem << OK
2020-10-13T10:18:29.392Z DEBUG modem >> AT+CFUN=1
2020-10-13T10:18:29.481Z DEBUG modem << OK
2020-10-13T10:18:30.577Z DEBUG modem >> AT+CFUN?
2020-10-13T10:18:30.598Z DEBUG modem << +CFUN: 1
2020-10-13T10:18:30.608Z DEBUG modem << OK
2020-10-13T10:18:30.611Z DEBUG modem >> AT+CGSN=1
2020-10-13T10:18:30.640Z DEBUG modem << +CGSN: "352656100367617"
2020-10-13T10:18:30.648Z DEBUG modem << OK
2020-10-13T10:18:30.675Z DEBUG modem >> AT+CGMI
2020-10-13T10:18:30.719Z DEBUG modem << Nordic Semiconductor ASA
2020-10-13T10:18:30.721Z DEBUG modem << OK
2020-10-13T10:18:30.748Z DEBUG modem >> AT+CGMM
2020-10-13T10:18:30.783Z DEBUG modem << nRF9160-SICA
2020-10-13T10:18:30.785Z DEBUG modem << OK
2020-10-13T10:18:30.789Z DEBUG modem >> AT+CGMR
2020-10-13T10:18:30.825Z DEBUG modem << mfw_nrf9160_1.2.0
2020-10-13T10:18:30.827Z DEBUG modem << OK
2020-10-13T10:18:30.832Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.2.0] SerNr: 352656100367617
2020-10-13T10:18:30.865Z DEBUG modem >> AT+CEMODE?
2020-10-13T10:18:30.889Z DEBUG modem << +CEMODE: 0
2020-10-13T10:18:30.892Z DEBUG modem << OK
2020-10-13T10:18:30.936Z DEBUG modem >> AT%XCBAND=?
2020-10-13T10:18:30.967Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2020-10-13T10:18:30.969Z DEBUG modem << OK
2020-10-13T10:18:31.005Z DEBUG modem >> AT+CMEE?
2020-10-13T10:18:31.040Z DEBUG modem << +CMEE: 0
2020-10-13T10:18:31.065Z DEBUG modem <<
2020-10-13T10:18:31.068Z DEBUG modem << OK
2020-10-13T10:18:31.087Z DEBUG modem >> AT+CMEE=1
2020-10-13T10:18:31.135Z DEBUG modem << OK
2020-10-13T10:18:31.140Z DEBUG modem >> AT+CNEC?
2020-10-13T10:18:31.160Z DEBUG modem << +CNEC: 0
2020-10-13T10:18:31.165Z DEBUG modem << OK
2020-10-13T10:18:31.192Z DEBUG modem >> AT+CNEC=24
2020-10-13T10:18:31.226Z DEBUG modem << OK
2020-10-13T10:18:31.231Z DEBUG modem >> AT+CGEREP?
2020-10-13T10:18:31.238Z DEBUG modem << +CGEREP: 0,0
2020-10-13T10:18:31.240Z DEBUG modem << OK
2020-10-13T10:18:31.263Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:18:31.285Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:18:31.287Z DEBUG modem << OK
2020-10-13T10:18:31.331Z DEBUG modem >> AT+CGACT?
2020-10-13T10:18:31.354Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:18:31.358Z DEBUG modem <<
2020-10-13T10:18:31.361Z DEBUG modem << OK
2020-10-13T10:18:31.402Z DEBUG modem >> AT+CGEREP=1
2020-10-13T10:18:31.434Z DEBUG modem << OK
2020-10-13T10:18:31.438Z DEBUG modem >> AT+CIND=1,1,1
2020-10-13T10:18:31.475Z DEBUG modem << OK
2020-10-13T10:18:31.479Z DEBUG modem >> AT+CEREG=2
2020-10-13T10:18:31.525Z DEBUG modem << OK
2020-10-13T10:18:31.549Z DEBUG modem >> AT+CEREG?
2020-10-13T10:18:31.587Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",9
2020-10-13T10:18:31.589Z DEBUG modem << OK
2020-10-13T10:18:31.630Z DEBUG modem >> AT%CESQ=1
2020-10-13T10:18:31.658Z DEBUG modem << OK
2020-10-13T10:18:31.665Z DEBUG modem >> AT+CESQ
2020-10-13T10:18:31.703Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2020-10-13T10:18:31.708Z DEBUG modem << OK
2020-10-13T10:18:31.744Z DEBUG modem >> AT%XSIM=1
2020-10-13T10:18:31.773Z DEBUG modem << OK
2020-10-13T10:18:31.799Z DEBUG modem >> AT%XSIM?
2020-10-13T10:18:31.832Z DEBUG modem << %XSIM: 0
2020-10-13T10:18:31.861Z DEBUG modem << OK
2020-10-13T10:18:33.515Z DEBUG modem << %XSIM: 1
2020-10-13T10:18:33.577Z DEBUG modem >> AT+CPIN?
2020-10-13T10:18:33.630Z DEBUG modem << +CPIN: READY
2020-10-13T10:18:33.634Z DEBUG modem << OK
2020-10-13T10:18:33.663Z DEBUG modem >> AT+CPINR="SIM PIN"
2020-10-13T10:18:33.684Z DEBUG modem << +CPINR: "SIM PIN",3
2020-10-13T10:18:33.689Z DEBUG modem << OK
2020-10-13T10:18:33.774Z DEBUG modem >> AT+CIMI
2020-10-13T10:18:33.847Z DEBUG modem << 502151044530005
2020-10-13T10:18:33.851Z DEBUG modem << OK
2020-10-13T10:18:33.855Z INFO IMSIdentity: 502151044530005
2020-10-13T10:19:20.879Z DEBUG modem << %CESQ: 86,4,28,4
2020-10-13T10:19:20.952Z DEBUG modem << +CEREG: 2,"0888","0003EA0B",9
2020-10-13T10:19:22.825Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:19:22.894Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:19:22.906Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:19:22.913Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:19:22.917Z DEBUG modem << OK
2020-10-13T10:19:22.995Z DEBUG modem >> AT+CGACT?
2020-10-13T10:19:23.005Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:19:23.009Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:19:23.013Z DEBUG modem << OK
2020-10-13T10:19:34.803Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:19:34.826Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:19:34.833Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:19:34.836Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:19:34.840Z DEBUG modem << OK
2020-10-13T10:19:34.869Z DEBUG modem >> AT+CGACT?
2020-10-13T10:19:34.876Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:19:34.879Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:19:34.881Z DEBUG modem << OK
2020-10-13T10:19:46.892Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:19:46.958Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:19:46.970Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:19:46.976Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:19:46.980Z DEBUG modem << OK
2020-10-13T10:19:47.055Z DEBUG modem >> AT+CGACT?
2020-10-13T10:19:47.071Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:19:47.075Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:19:47.079Z DEBUG modem << OK
2020-10-13T10:19:58.980Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:19:59.052Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:19:59.064Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:19:59.071Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:19:59.075Z DEBUG modem << OK
2020-10-13T10:19:59.147Z DEBUG modem >> AT+CGACT?
2020-10-13T10:19:59.159Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:19:59.165Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:19:59.168Z DEBUG modem << OK
2020-10-13T10:20:10.865Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:20:10.899Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:20:10.909Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:20:10.914Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:20:10.916Z DEBUG modem << OK
2020-10-13T10:20:10.957Z DEBUG modem >> AT+CGACT?
2020-10-13T10:20:10.967Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:20:10.971Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:20:10.974Z DEBUG modem << OK
2020-10-13T10:20:22.753Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:20:22.829Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:20:22.844Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:20:22.851Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:20:22.855Z DEBUG modem << OK
2020-10-13T10:20:22.944Z DEBUG modem >> AT+CGACT?
2020-10-13T10:20:22.958Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:20:22.962Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:20:23.026Z DEBUG modem << OK
2020-10-13T10:20:34.827Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:20:34.857Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:20:34.866Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:20:34.870Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:20:34.872Z DEBUG modem << OK
2020-10-13T10:20:34.907Z DEBUG modem >> AT+CGACT?
2020-10-13T10:20:34.915Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:20:34.919Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:20:34.921Z DEBUG modem << OK
2020-10-13T10:20:46.679Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:20:46.756Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:20:46.770Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:20:46.776Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:20:46.781Z DEBUG modem << OK
2020-10-13T10:20:46.867Z DEBUG modem >> AT+CGACT?
2020-10-13T10:20:46.876Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:20:46.880Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:20:46.883Z DEBUG modem << OK
2020-10-13T10:20:58.503Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:20:58.579Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:20:58.589Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:20:58.598Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:20:58.602Z DEBUG modem << OK
2020-10-13T10:20:58.683Z DEBUG modem >> AT+CGACT?
2020-10-13T10:20:58.696Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:20:58.702Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:20:58.706Z DEBUG modem << OK
2020-10-13T10:21:10.412Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:21:10.442Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:21:10.452Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:10.455Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:10.457Z DEBUG modem << OK
2020-10-13T10:21:10.500Z DEBUG modem >> AT+CGACT?
2020-10-13T10:21:10.508Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:21:10.512Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:21:10.515Z DEBUG modem << OK
2020-10-13T10:21:22.494Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:21:22.566Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:21:22.578Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:22.584Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:22.588Z DEBUG modem << OK
2020-10-13T10:21:22.667Z DEBUG modem >> AT+CGACT?
2020-10-13T10:21:22.679Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:21:22.683Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:21:22.687Z DEBUG modem << OK
2020-10-13T10:21:34.430Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:21:34.507Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:21:34.520Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:34.527Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:34.531Z DEBUG modem << OK
2020-10-13T10:21:34.624Z DEBUG modem >> AT+CGACT?
2020-10-13T10:21:34.636Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:21:34.639Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:21:34.644Z DEBUG modem << OK
2020-10-13T10:21:38.021Z DEBUG modem << %CESQ: 81,4,28,4
2020-10-13T10:21:46.497Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:21:46.576Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:21:46.588Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:46.600Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:46.605Z DEBUG modem << OK
2020-10-13T10:21:46.699Z DEBUG modem >> AT+CGACT?
2020-10-13T10:21:46.708Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:21:46.714Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:21:46.718Z DEBUG modem << OK
2020-10-13T10:21:58.358Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:21:58.443Z DEBUG modem >> AT+CGDCONT?
2020-10-13T10:21:58.457Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:58.464Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:58.468Z DEBUG modem << OK
2020-10-13T10:21:58.565Z DEBUG modem >> AT+CGACT?
2020-10-13T10:21:58.575Z DEBUG modem << +CGACT: 0,0
2020-10-13T10:21:58.583Z DEBUG modem <<
2020-10-13T10:21:58.587Z DEBUG modem << +CGACT: 1,0
2020-10-13T10:21:58.592Z DEBUG modem << OK
2020-10-13T10:22:04.173Z DEBUG modem >> AT+COPS=?
2020-10-13T10:22:10.265Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:22:22.337Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:22:34.225Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:22:46.700Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:22:58.557Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:23:10.672Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:23:22.585Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:23:34.659Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:23:46.522Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:23:58.376Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:24:10.220Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:24:22.388Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:24:22.787Z DEBUG modem << %CESQ: 86,4,28,4
2020-10-13T10:24:34.262Z DEBUG modem << +CGEV: ME DETACH
2020-10-13T10:25:17.653Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-13T10:25:17.659Z DEBUG modem << +CEREG: 2,"FFFE","FFFFFFFF",9
2020-10-13T10:28:16.547Z DEBUG modem << %CESQ: 85,4,24,3
2020-10-13T10:28:16.559Z DEBUG modem << +CEREG: 2,"0888","0003EA0B",9
2020-10-13T10:28:37.814Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-13T10:28:37.824Z DEBUG modem << +CEREG: 2,"FFFE","FFFFFFFF",9
2020-10-13T10:29:44.919Z DEBUG modem << +CME ERROR: 0

[Øyvind]

I have not been able to forward your modem trace yet. Just to clarify some details first.

Can you please try to issue the command:
+CGDCONT: 0,"IP","yesiot","",0,0

In your previous attempts, you are using CID 1, but CID 0 is returning empty:

2020-10-13T10:21:46.588Z DEBUG modem << +CGDCONT: 0,"IP","","",0,0
2020-10-13T10:21:46.600Z DEBUG modem << +CGDCONT: 1,"IP","yesiot","",0,0
2020-10-13T10:21:46.605Z DEBUG modem << OK

[Aswin P V]

Thanks for the reply. We checked with CID as 0. But still issue is there. 

Please see the attached logs and traces.

We also tried with the latest modem FW version 1.2.1 ( Earlier was checking with 1.2.0), but still issue is there.

Also attaching the pcap log file captured by n/w team and their observations. 

log2_trace.ziplog1_trace.zip 

Fullscreen log1_mfw_1_2_0.txt Download

2020-10-16T07:03:18.924Z DEBUG modem >> AT+CFUN?
2020-10-16T07:03:19.072Z DEBUG modem << +CFUN: 0
2020-10-16T07:03:19.078Z DEBUG modem << OK
2020-10-16T07:05:11.437Z DEBUG modem >> AT+CGDCONT=0,"IP","yesiot"
2020-10-16T07:05:11.483Z DEBUG modem << OK
2020-10-16T07:05:14.385Z DEBUG modem >> AT+CGDCONT=0,"IP","yesiot"
2020-10-16T07:05:14.411Z DEBUG modem << OK
2020-10-16T07:06:07.076Z DEBUG modem >> AT%XSYSTEMODE=0,1,1,0
2020-10-16T07:06:07.112Z DEBUG modem << ERROR
2020-10-16T07:06:07.121Z ERROR Error: AT%XSYSTEMODE=0,1,1,0
 failed
2020-10-16T07:06:34.178Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2020-10-16T07:06:34.206Z DEBUG modem << OK
2020-10-16T07:06:45.194Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2020-10-16T07:06:45.220Z DEBUG modem << OK
2020-10-16T07:06:57.572Z DEBUG modem >> AT+CFUN=1
2020-10-16T07:06:57.734Z DEBUG modem << OK
2020-10-16T07:07:02.153Z DEBUG modem >> AT+CFUN?
2020-10-16T07:07:02.304Z DEBUG modem << +CFUN: 1
2020-10-16T07:07:02.328Z DEBUG modem << OK
2020-10-16T07:07:02.338Z DEBUG modem >> AT+CGSN=1
2020-10-16T07:07:02.390Z DEBUG modem << +CGSN: "352656100367617"
2020-10-16T07:07:02.408Z DEBUG modem << OK
2020-10-16T07:07:02.421Z DEBUG modem >> AT+CGMI
2020-10-16T07:07:02.485Z DEBUG modem << Nordic Semiconductor ASA
2020-10-16T07:07:02.489Z DEBUG modem << OK
2020-10-16T07:07:02.493Z DEBUG modem >> AT+CGMM
2020-10-16T07:07:02.570Z DEBUG modem << nRF9160-SICA
2020-10-16T07:07:02.575Z DEBUG modem << OK
2020-10-16T07:07:02.600Z DEBUG modem >> AT+CGMR
2020-10-16T07:07:02.681Z DEBUG modem << mfw_nrf9160_1.2.0
2020-10-16T07:07:02.689Z DEBUG modem << 
2020-10-16T07:07:02.693Z DEBUG modem << OK
2020-10-16T07:07:02.698Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.2.0] SerNr: 352656100367617
2020-10-16T07:07:02.708Z DEBUG modem >> AT+CEMODE?
2020-10-16T07:07:02.757Z DEBUG modem << +CEMODE: 0
2020-10-16T07:07:02.774Z DEBUG modem << OK
2020-10-16T07:07:02.825Z DEBUG modem >> AT%XCBAND=?
2020-10-16T07:07:02.920Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2020-10-16T07:07:02.924Z DEBUG modem << OK
2020-10-16T07:07:02.986Z DEBUG modem >> AT+CMEE?
2020-10-16T07:07:03.019Z DEBUG modem << +CMEE: 0
2020-10-16T07:07:03.025Z DEBUG modem << OK
2020-10-16T07:07:03.040Z DEBUG modem >> AT+CMEE=1
2020-10-16T07:07:03.087Z DEBUG modem << OK
2020-10-16T07:07:03.113Z DEBUG modem >> AT+CNEC?
2020-10-16T07:07:03.160Z DEBUG modem << +CNEC: 0
2020-10-16T07:07:03.166Z DEBUG modem << OK
2020-10-16T07:07:03.182Z DEBUG modem >> AT+CNEC=24
2020-10-16T07:07:03.240Z DEBUG modem << OK
2020-10-16T07:07:03.255Z DEBUG modem >> AT+CGEREP?
2020-10-16T07:07:03.296Z DEBUG modem << +CGEREP: 0,0
2020-10-16T07:07:03.316Z DEBUG modem << OK
2020-10-16T07:07:03.331Z DEBUG modem >> AT+CGDCONT?
2020-10-16T07:07:03.401Z DEBUG modem << +CGDCONT: 0,"IP","yesiot","",0,0
2020-10-16T07:07:03.405Z DEBUG modem << OK
2020-10-16T07:07:03.431Z DEBUG modem >> AT+CGACT?
2020-10-16T07:07:03.475Z DEBUG modem << +CGACT: 0,0
2020-10-16T07:07:03.497Z DEBUG modem << 
2020-10-16T07:07:03.513Z DEBUG modem << OK
2020-10-16T07:07:03.570Z DEBUG modem >> AT+CGEREP=1
2020-10-16T07:07:03.605Z DEBUG modem << OK
2020-10-16T07:07:03.625Z DEBUG modem >> AT+CIND=1,1,1
2020-10-16T07:07:03.677Z DEBUG modem << OK
2020-10-16T07:07:03.700Z DEBUG modem >> AT+CEREG=2
2020-10-16T07:07:03.733Z DEBUG modem << OK
2020-10-16T07:07:03.742Z DEBUG modem >> AT+CEREG?
2020-10-16T07:07:03.824Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",9
2020-10-16T07:07:03.829Z DEBUG modem << OK
2020-10-16T07:07:03.864Z DEBUG modem >> AT%CESQ=1
2020-10-16T07:07:03.899Z DEBUG modem << OK
2020-10-16T07:07:03.906Z DEBUG modem >> AT+CESQ
2020-10-16T07:07:03.973Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2020-10-16T07:07:03.991Z DEBUG modem << OK
2020-10-16T07:07:04.019Z DEBUG modem >> AT%XSIM=1
2020-10-16T07:07:04.070Z DEBUG modem << OK
2020-10-16T07:07:04.079Z DEBUG modem >> AT%XSIM?
2020-10-16T07:07:04.120Z DEBUG modem << %XSIM: 1
2020-10-16T07:07:04.150Z DEBUG modem << OK
2020-10-16T07:07:04.192Z DEBUG modem >> AT+CPIN?
2020-10-16T07:07:04.232Z DEBUG modem << +CPIN: READY
2020-10-16T07:07:04.236Z DEBUG modem << OK
2020-10-16T07:07:04.269Z DEBUG modem >> AT+CPINR="SIM PIN"
2020-10-16T07:07:04.339Z DEBUG modem << +CPINR: "SIM PIN",3
2020-10-16T07:07:04.343Z DEBUG modem << OK
2020-10-16T07:07:04.384Z DEBUG modem >> AT+CIMI
2020-10-16T07:07:04.436Z DEBUG modem << 502151044530005
2020-10-16T07:07:04.442Z DEBUG modem << OK
2020-10-16T07:07:04.447Z INFO IMSIdentity: 502151044530005
2020-10-16T07:07:37.301Z DEBUG modem >> AT+COPS=?
2020-10-16T07:07:54.994Z DEBUG modem << %CESQ: 90,4,26,3
2020-10-16T07:07:55.003Z DEBUG modem << +CEREG: 2,"0888","0003EA0B",9
2020-10-16T07:07:57.855Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:08:00.763Z DEBUG modem << %CESQ: 90,4,21,3
2020-10-16T07:08:10.676Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:08:23.460Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:08:36.254Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:08:49.077Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:08:49.092Z DEBUG modem << 
2020-10-16T07:09:01.852Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:09:14.654Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:09:14.662Z DEBUG modem << 

Fullscreen log2_mfw_1_2_1.txt Download

2020-10-16T07:15:25.074Z DEBUG modem >> AT+CFUN?
2020-10-16T07:15:25.422Z DEBUG modem << +CFUN: 0
2020-10-16T07:15:25.514Z DEBUG modem << OK
2020-10-16T07:16:45.017Z DEBUG modem >> AT+CGDCONT=0,"IP","yesiot"
2020-10-16T07:16:45.107Z DEBUG modem << OK
2020-10-16T07:17:20.033Z DEBUG modem >> AT%XSYSTEMMODE=0,1,1,0
2020-10-16T07:17:20.077Z DEBUG modem << OK
2020-10-16T07:17:24.662Z DEBUG modem >> AT+CFUN=1
2020-10-16T07:17:24.746Z DEBUG modem << OK
2020-10-16T07:17:26.809Z DEBUG modem >> AT+CFUN?
2020-10-16T07:17:26.851Z DEBUG modem << +CFUN: 1
2020-10-16T07:17:26.982Z DEBUG modem << OK
2020-10-16T07:17:26.998Z DEBUG modem >> AT+CGSN=1
2020-10-16T07:17:27.041Z DEBUG modem << +CGSN: "352656100367617"
2020-10-16T07:17:27.045Z DEBUG modem << OK
2020-10-16T07:17:27.059Z DEBUG modem >> AT+CGMI
2020-10-16T07:17:27.076Z DEBUG modem << Nordic Semiconductor ASA
2020-10-16T07:17:27.080Z DEBUG modem << OK
2020-10-16T07:17:27.095Z DEBUG modem >> AT+CGMM
2020-10-16T07:17:27.109Z DEBUG modem << nRF9160-SICA
2020-10-16T07:17:27.112Z DEBUG modem << OK
2020-10-16T07:17:27.127Z DEBUG modem >> AT+CGMR
2020-10-16T07:17:27.142Z DEBUG modem << mfw_nrf9160_1.2.1
2020-10-16T07:17:27.145Z DEBUG modem << OK
2020-10-16T07:17:27.148Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.2.1] SerNr: 352656100367617
2020-10-16T07:17:27.159Z DEBUG modem >> AT+CEMODE?
2020-10-16T07:17:27.184Z DEBUG modem << +CEMODE: 0
2020-10-16T07:17:27.187Z DEBUG modem << OK
2020-10-16T07:17:27.236Z DEBUG modem >> AT%XCBAND=?
2020-10-16T07:17:27.256Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,17,19,20,25,26,28,66)
2020-10-16T07:17:27.262Z DEBUG modem << OK
2020-10-16T07:17:27.308Z DEBUG modem >> AT+CMEE?
2020-10-16T07:17:27.324Z DEBUG modem << +CMEE: 0
2020-10-16T07:17:27.326Z DEBUG modem << OK
2020-10-16T07:17:27.330Z DEBUG modem >> AT+CMEE=1
2020-10-16T07:17:27.342Z DEBUG modem << OK
2020-10-16T07:17:27.349Z DEBUG modem >> AT+CNEC?
2020-10-16T07:17:27.374Z DEBUG modem << +CNEC: 0
2020-10-16T07:17:27.395Z DEBUG modem << OK
2020-10-16T07:17:27.413Z DEBUG modem >> AT+CNEC=24
2020-10-16T07:17:27.426Z DEBUG modem << OK
2020-10-16T07:17:27.432Z DEBUG modem >> AT+CGEREP?
2020-10-16T07:17:27.458Z DEBUG modem << +CGEREP: 0,0
2020-10-16T07:17:27.462Z DEBUG modem << OK
2020-10-16T07:17:27.466Z DEBUG modem >> AT+CGDCONT?
2020-10-16T07:17:27.481Z DEBUG modem << +CGDCONT: 0,"IP","yesiot","",0,0
2020-10-16T07:17:27.488Z DEBUG modem << OK
2020-10-16T07:17:27.508Z DEBUG modem >> AT+CGACT?
2020-10-16T07:17:27.525Z DEBUG modem << +CGACT: 0,0
2020-10-16T07:17:27.530Z DEBUG modem << OK
2020-10-16T07:17:27.562Z DEBUG modem >> AT+CGEREP=1
2020-10-16T07:17:27.591Z DEBUG modem << OK
2020-10-16T07:17:27.596Z DEBUG modem >> AT+CIND=1,1,1
2020-10-16T07:17:27.612Z DEBUG modem << OK
2020-10-16T07:17:27.620Z DEBUG modem >> AT+CEREG=2
2020-10-16T07:17:27.646Z DEBUG modem << OK
2020-10-16T07:17:27.663Z DEBUG modem >> AT+CEREG?
2020-10-16T07:17:27.678Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",9
2020-10-16T07:17:27.688Z DEBUG modem << OK
2020-10-16T07:17:27.734Z DEBUG modem >> AT%CESQ=1
2020-10-16T07:17:27.746Z DEBUG modem << OK
2020-10-16T07:17:27.762Z DEBUG modem >> AT+CESQ
2020-10-16T07:17:27.791Z DEBUG modem << +CESQ: 99,99,255,255,255,255
2020-10-16T07:17:27.798Z DEBUG modem << OK
2020-10-16T07:17:27.856Z DEBUG modem >> AT%XSIM=1
2020-10-16T07:17:27.880Z DEBUG modem << OK
2020-10-16T07:17:27.903Z DEBUG modem >> AT%XSIM?
2020-10-16T07:17:27.930Z DEBUG modem << %XSIM: 0
2020-10-16T07:17:27.934Z DEBUG modem << OK
2020-10-16T07:17:28.787Z DEBUG modem << %XSIM: 1
2020-10-16T07:17:28.836Z DEBUG modem >> AT+CPIN?
2020-10-16T07:17:28.904Z DEBUG modem << +CPIN: READY
2020-10-16T07:17:28.915Z DEBUG modem << OK
2020-10-16T07:17:29.027Z DEBUG modem >> AT+CPINR="SIM PIN"
2020-10-16T07:17:29.046Z DEBUG modem << +CPINR: "SIM PIN",3
2020-10-16T07:17:29.049Z DEBUG modem << OK
2020-10-16T07:17:29.079Z DEBUG modem >> AT+CIMI
2020-10-16T07:17:29.094Z DEBUG modem << 502151044530005
2020-10-16T07:17:29.096Z DEBUG modem << OK
2020-10-16T07:17:29.100Z INFO IMSIdentity: 502151044530005
2020-10-16T07:18:16.463Z DEBUG modem >> AT+COPS=?
2020-10-16T07:18:19.572Z DEBUG modem << %CESQ: 91,4,26,3
2020-10-16T07:18:19.577Z DEBUG modem << %CESQ: 89,4,26,3
2020-10-16T07:18:19.598Z DEBUG modem << +CEREG: 2,"0888","0003EA0B",9
2020-10-16T07:18:22.219Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:18:22.608Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:18:34.186Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:18:34.449Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:18:44.533Z DEBUG modem << %CESQ: 89,4,24,3
2020-10-16T07:18:46.350Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:18:46.605Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:18:58.498Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:18:58.766Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:19:10.967Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:19:11.247Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:19:23.178Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:19:23.566Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:19:35.217Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:19:35.566Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:19:36.883Z DEBUG modem << %CESQ: 89,4,30,4
2020-10-16T07:19:47.711Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:19:48.044Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:19:59.840Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:20:00.207Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:20:12.320Z DEBUG modem << +CGEV: ME DETACH
2020-10-16T07:20:12.684Z DEBUG modem << %CESQ: 255,0,255,0
2020-10-16T07:20:14.313Z INFO Modem port is closed

nw_team_observations.zip

[SilasV]

It seems you don't get good signal, you can try to run the AT commands manually. After putting the nRF to full function (i.e. after sending this command AT+CFUN=1 )  send this command -> AT+CESQ  if you get the below response, that shows there is no signal  

+CESQ: 99,99,255,255,255,255

wait for sometime and send the same command until you see response something like below:

+CESQ: 99,99,255,255,31,60  (last two numbers show signal strengths rsrq and rsrp - mapped to numbers from dB

if you still don't get after repeated tries, then you should relocate to different spot and try   

[Øyvind]

Hello,

The network is not working according to specifications as it sends information element (APN aggregate maximum bit rate IE) that contains reserved values. With the fix coming later, the whole IE will be ignored as specified by 3GPP. In other words, currently there should be no UEs behaving according to the values given by network, because the IE should be ignored. The operator should be interested in hearing this.

A fix will be released, however, no timeline is given.

Kind regards,
Øyvind

[Aswin P V]

Thanks a lot for the explanation! We will let the operator know about this. 

Just to get a more clarity on this , the issue is in network operator or nordic or both ? 

[Øyvind]

You're welcome! As far as I understand, this is a little of both, as there will be a fix from our side as well. 

-Øyvind

[Aswin P V]

Thank you!

Is it possible to have some fix/workaround from carrier/network alone? If so what?

[Øyvind]

Is the issue fixed on your side?