nRF9160 DK - Asset Tracker Application - Connect to EMEA nRF Cloud?

[Kevin Kotinkar]

Hi,

I am testing the nRF9160 DK and used the asset tracker application with the IBasis SIM.
Application works fine under CAT M1 network (IBasis SIM is roaming on o2/Telefonica in Germany), but I can't connect to the MQTT broker / nRF cloud on NB-IoT.
(Modem is attached on NB-IoT, signal level (RSRP, RSRQ) is good).

Most likely, this is due to latency issues, as MQTT runs on TCP, which already fairly heavy for NB IoT.

Secondly, I noticed that the application uses a NRF cloud / MQTT server in the US (east coast, Virgina).
Domain: a2n7tk1kp18wix-ats.iot.us-east-1.amazonaws.com

I can connect to MQTT brokers nearby in Europe on NB-IoT (used for example the MQTT sample application), TCP connection was stable enough to support MQTT.
Question is hence, is there a server/gateway for the nRF cloud MQTT broker in Europe or other regions than US East?

Thanks.

BR
Kevin

[Albrecht Markus Schellenberger]

Hello Kevin,

I’m not aware of any server/gateway for the nRF Cloud in Europe.

Would you mind sending me an application log that shows the failing connecting to the nRF Cloud on NB-IoT? I might wanna cross-check this with our nRF Cloud team.

Thanks and regards,

Markus

[Kevin Kotinkar]

Hello Markus,

I am attaching two application logs, one taken in Berlin, the other one in Munich. Let me know if you see something interesting. For those 2 logs, I have used the pre-compiled asset tracker application, but I had same results when running my own compiled versions (haven't tested on NCS 1.6.0 though, only used NCS 1.5.0 with Zephyr 2.4.99.

(As said CAT-M works, let me know if a success log of that for cross comparison will be helpful).


Btw, to get DNS working on NB IoT I had to use legacy PCO mode with o2 / Telefonica in Germany (June 2021).

Best regards,
Kevin

Fullscreen nRF9160DK_asset_tracker_NBIOT_Berlin.log Download

[2021-06-25 11:13:11.885] *** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-25 11:13:11.885] I: Starting bootloader
[2021-06-25 11:13:11.885] I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
[2021-06-25 11:13:11.897] I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
[2021-06-25 11:13:11.905] I: Boot source: none
[2021-06-25 11:13:11.906] I: Swap type: none
[2021-06-25 11:13:12.182] I: Bootloader chainload address offset: 0x10000
[2021-06-25 11:13:12.188] I: Jumping to the first image slot*** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-25 11:13:12.194] Flash regions		Domain		Permissions
[2021-06-25 11:13:12.196] 00 02 0x00000 0x18000 	Secure		rwxl
[2021-06-25 11:13:12.196] 03 31 0x18000 0x100000 	Non-Secure	rwxl
[2021-06-25 11:13:12.196] 
[2021-06-25 11:13:12.204] Non-secure callable region 0 placed in flash region 2 with size 32.
[2021-06-25 11:13:12.205] 
[2021-06-25 11:13:12.378] SRAM region		Domain		Permissions
[2021-06-25 11:13:12.382] 00 07 0x00000 0x10000 	Secure		rwxl
[2021-06-25 11:13:12.387] 08 31 0x10000 0x40000 	Non-Secure	rwxl
[2021-06-25 11:13:12.387] 
[2021-06-25 11:13:12.387] Peripheral		Domain		Status
[2021-06-25 11:13:12.387] 00 NRF_P0               Non-Secure	OK
[2021-06-25 11:13:12.395] 01 NRF_CLOCK            Non-Secure	OK
[2021-06-25 11:13:12.396] 02 NRF_RTC0             Non-Secure	OK
[2021-06-25 11:13:12.396] 03 NRF_RTC1             Non-Secure	OK
[2021-06-25 11:13:12.405] 04 NRF_NVMC             Non-Secure	OK
[2021-06-25 11:13:12.406] 05 NRF_UARTE1           Non-Secure	OK
[2021-06-25 11:13:12.406] 06 NRF_UARTE2           Secure		SKIP
[2021-06-25 11:13:12.416] 07 NRF_TWIM2            Non-Secure	OK
[2021-06-25 11:13:12.416] 08 NRF_SPIM3            Non-Secure	OK
[2021-06-25 11:13:12.416] 09 NRF_TIMER0           Non-Secure	OK
[2021-06-25 11:13:12.425] 10 NRF_TIMER1           Non-Secure	OK
[2021-06-25 11:13:12.425] 11 NRF_TIMER2           Non-Secure	OK
[2021-06-25 11:13:12.425] 12 NRF_SAADC            Non-Secure	OK
[2021-06-25 11:13:12.436] 13 NRF_PWM0             Non-Secure	OK
[2021-06-25 11:13:12.436] 14 NRF_PWM1             Non-Secure	OK
[2021-06-25 11:13:12.436] 15 NRF_PWM2             Non-Secure	OK
[2021-06-25 11:13:12.446] 16 NRF_PWM3             Non-Secure	OK
[2021-06-25 11:13:12.446] 17 NRF_WDT              Non-Secure	OK
[2021-06-25 11:13:12.446] 18 NRF_IPC              Non-Secure	OK
[2021-06-25 11:13:12.456] 19 NRF_VMC              Non-Secure	OK
[2021-06-25 11:13:12.458] 20 NRF_FPU              Non-Secure	OK
[2021-06-25 11:13:12.458] 21 NRF_EGU1             Non-Secure	OK
[2021-06-25 11:13:12.465] 22 NRF_EGU2             Non-Secure	OK
[2021-06-25 11:13:12.465] 23 NRF_DPPIC            Non-Secure	OK
[2021-06-25 11:13:12.465] 24 NRF_REGULATORS       Non-Secure	OK
[2021-06-25 11:13:12.476] 25 NRF_GPIOTE1          Non-Secure	OK
[2021-06-25 11:13:12.476] 
[2021-06-25 11:13:12.476] SPM: NS image at 0x1c200
[2021-06-25 11:13:12.482] SPM: NS MSP at 0x20025598
[2021-06-25 11:13:12.486] SPM: NS reset vector at 0x26805
[2021-06-25 11:13:12.486] SPM: prepare to jump to Non-Secure image.
[2021-06-25 11:13:12.697] *** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-25 11:13:12.697] [00:00:00.206,237] <inf> asset_tracker: Asset tracker started
[2021-06-25 11:13:12.706] [00:00:00.212,432] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[2021-06-25 11:13:12.715] [00:00:00.220,031] <inf> watchdog: Watchdog started
[2021-06-25 11:13:12.715] [00:00:00.225,402] <inf> watchdog: Watchdog feed enabled. Timeout: 30000
[2021-06-25 11:13:12.726] [00:00:00.233,276] <dbg> nrf_cloud_transport.nct_settings_set: Settings key: p_sesh, size: 4
[2021-06-25 11:13:12.736] [00:00:00.242,187] <dbg> nrf_cloud_transport.nct_settings_set: Read setting val: 1
[2021-06-25 11:13:12.755] [00:00:00.257,385] <dbg> nrf_cloud_transport.nct_client_id_get: client_id = nrf-352656106651436
[2021-06-25 11:13:12.764] [00:00:00.266,601] <dbg> nrf_cloud_transport.nct_topics_populate: shadow_base_topic: $aws/things/nrf-352656106651436/shadow
[2021-06-25 11:13:12.776] [00:00:00.278,350] <dbg> nrf_cloud_transport.nct_topics_populate: accepted_topic: nrf-352656106651436/shadow/get/accepted
[2021-06-25 11:13:12.785] [00:00:00.289,947] <dbg> nrf_cloud_transport.nct_topics_populate: rejected_topic: $aws/things/nrf-352656106651436/shadow/get/rejected
[2021-06-25 11:13:12.796] [00:00:00.302,490] <dbg> nrf_cloud_transport.nct_topics_populate: update_delta_topic: $aws/things/nrf-352656106651436/shadow/update/delta
[2021-06-25 11:13:12.806] [00:00:00.315,551] <dbg> nrf_cloud_transport.nct_topics_populate: update_topic: $aws/things/nrf-352656106651436/shadow/update
[2021-06-25 11:13:12.825] [00:00:00.327,484] <dbg> nrf_cloud_transport.nct_topics_populate: shadow_get_topic: $aws/things/nrf-352656106651436/shadow/get
[2021-06-25 11:13:12.836] [00:00:00.339,538] <inf> asset_tracker: Connecting to LTE network.
[2021-06-25 11:13:12.842] [00:00:00.346,252] <inf> asset_tracker: This may take several minutes.
[2021-06-25 11:13:12.864] [00:00:00.367,645] <inf> lte_lc: Using legacy LTE PCO mode...
[2021-06-25 11:13:15.515] +CEREG: 2,"0899","00535665",9
[2021-06-25 11:13:15.515] [00:00:03.022,033] <inf> asset_tracker: LTE cell changed: Cell ID: 5461605, Tracking area: 2201
[2021-06-25 11:13:16.515] +CSCON: 1
[2021-06-25 11:13:16.515] [00:00:04.023,590] <inf> asset_tracker: RRC mode: Connected
[2021-06-25 11:13:24.477] +CEREG: 5,"0899","00535665",9,,,"11100000","00101100"
[2021-06-25 11:13:24.477] [00:00:11.985,931] <inf> asset_tracker: Connected to LTE network.
[2021-06-25 11:13:24.485] [00:00:11.992,675] <inf> asset_tracker: Connecting to cloud, attempt 1 of 8
[2021-06-25 11:13:24.496] [00:00:12.000,122] <inf> asset_tracker: Cloud connection request sent.
[2021-06-25 11:13:24.496] [00:00:12.007,110] <inf> asset_tracker: Connection response timeout is set to 30 seconds.
[2021-06-25 11:13:24.506] [00:00:12.015,960] <inf> asset_tracker: Network registration status: Connected - roaming
[2021-06-25 11:13:24.516] [00:00:12.024,505] <inf> asset_tracker: PSM parameter update: TAU: 43200, Active time: -1
[2021-06-25 11:13:24.525] [00:00:12.033,325] <dbg> nrf_cloud.api_event_handler: NRF_CLOUD_EVT_TRANSPORT_CONNECTING
[2021-06-25 11:13:24.536] [00:00:12.041,931] <inf> asset_tracker: CLOUD_EVT_CONNECTING
[2021-06-25 11:13:27.047] at+cereg?+CEREG: 5,5,"0899","00535665",9,,,"11100000","00101100"
[2021-06-25 11:13:28.475] OK
[2021-06-25 11:13:28.895] at+ces[00:00:17.641,601] <dbg> nrf_cloud_transport.nct_connect: IPv4 address: 34.206.75.181
[2021-06-25 11:13:30.145] [00:00:17.649,932] <dbg> nrf_cloud_transport.nct_mqtt_connect: MQTT clean session flag: 0
[2021-06-25 11:13:30.159] q+CESQ: 99,99,255,255,20,44
[2021-06-25 11:13:30.356] OK
[2021-06-25 11:13:31.167] [00:00:18.674,713] <inf> asset_tracker: DATE_TIME_OBTAINED_NTP
[2021-06-25 11:13:36.577] at+cgpaddr+CGPADDR: 0,"10.160.40.236"
[2021-06-25 11:13:38.046] OK
[2021-06-25 11:13:45.156] at%xmonitor%XMONITOR: 5,"","","26203","0899",9,20,"00535665",366,6190,44,38,"","11100000","00101100","01011110"
[2021-06-25 11:13:47.056] OK
[2021-06-25 11:14:50.928] [00:01:38.434,234] <dbg> nrf_cloud_transport.nct_mqtt_connect: mqtt_connect failed -104
[2021-06-25 11:14:50.929] [00:01:38.442,749] <err> nrf_cloud: nRF cloud connect failed -104
[2021-06-25 11:14:50.938] [00:01:38.449,645] <dbg> nrf_cloud.api_event_handler: NRF_CLOUD_EVT_TRANSPORT_CONNECTING
[2021-06-25 11:14:50.948] [00:01:38.458,343] <err> nrf_cloud: nRF cloud connect failed -5
[2021-06-25 11:14:50.958] [00:01:38.465,087] <inf> asset_tracker: CLOUD_EVT_CONNECTING
[2021-06-25 11:14:50.960] [00:01:38.471,221] <err> asset_tracker: Failed to connect to cloud, error -5
[2021-06-25 11:14:50.968] [00:01:38.479,125] <err> asset_tracker: Device will reboot in 300 seconds
[2021-06-25 11:14:50.978] [00:01:38.486,755] <err> asset_tracker: LTE link disconnect
[2021-06-25 11:14:51.430] +CEREG: 0
[2021-06-25 11:14:51.435] [00:01:38.942,047] <inf> asset_tracker: LTE cell changed: Cell ID: -1, Tracking area: -1
[2021-06-25 11:14:52.263] +CSCON: 0
[2021-06-25 11:14:52.263] [00:01:39.770,416] <inf> asset_tracker: RRC mode: Idle
[2021-06-25 11:14:52.478] [00:01:39.984,466] <err> asset_tracker: Shutdown modem

Fullscreen nRF9160DK_asset_tracker_NBIOT_Munich.log Download

[2021-06-23 10:20:05.880] *** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-23 10:20:05.880] I: Starting bootloader
[2021-06-23 10:20:05.880] I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
[2021-06-23 10:20:05.880] I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
[2021-06-23 10:20:05.896] I: Boot source: none
[2021-06-23 10:20:05.896] I: Swap type: none
[2021-06-23 10:20:06.166] I: Bootloader chainload address offset: 0x10000
[2021-06-23 10:20:06.166] I: Jumping to the first image slot*** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-23 10:20:06.182] Flash regions		Domain		Permissions
[2021-06-23 10:20:06.182] 00 02 0x00000 0x18000 	Secure		rwxl
[2021-06-23 10:20:06.182] 03 31 0x18000 0x100000 	Non-Secure	rwxl
[2021-06-23 10:20:06.182] 
[2021-06-23 10:20:06.182] Non-secure callable region 0 placed in flash region 2 with size 32.
[2021-06-23 10:20:06.197] 
[2021-06-23 10:20:06.366] SRAM region		Domain		Permissions
[2021-06-23 10:20:06.366] 00 07 0x00000 0x10000 	Secure		rwxl
[2021-06-23 10:20:06.366] 08 31 0x10000 0x40000 	Non-Secure	rwxl
[2021-06-23 10:20:06.382] 
[2021-06-23 10:20:06.382] Peripheral		Domain		Status
[2021-06-23 10:20:06.382] 00 NRF_P0               Non-Secure	OK
[2021-06-23 10:20:06.382] 01 NRF_CLOCK            Non-Secure	OK
[2021-06-23 10:20:06.382] 02 NRF_RTC0             Non-Secure	OK
[2021-06-23 10:20:06.382] 03 NRF_RTC1             Non-Secure	OK
[2021-06-23 10:20:06.398] 04 NRF_NVMC             Non-Secure	OK
[2021-06-23 10:20:06.398] 05 NRF_UARTE1           Non-Secure	OK
[2021-06-23 10:20:06.398] 06 NRF_UARTE2           Secure		SKIP
[2021-06-23 10:20:06.398] 07 NRF_TWIM2            Non-Secure	OK
[2021-06-23 10:20:06.398] 08 NRF_SPIM3            Non-Secure	OK
[2021-06-23 10:20:06.413] 09 NRF_TIMER0           Non-Secure	OK
[2021-06-23 10:20:06.413] 10 NRF_TIMER1           Non-Secure	OK
[2021-06-23 10:20:06.420] 11 NRF_TIMER2           Non-Secure	OK
[2021-06-23 10:20:06.420] 12 NRF_SAADC            Non-Secure	OK
[2021-06-23 10:20:06.420] 13 NRF_PWM0             Non-Secure	OK
[2021-06-23 10:20:06.420] 14 NRF_PWM1             Non-Secure	OK
[2021-06-23 10:20:06.435] 15 NRF_PWM2             Non-Secure	OK
[2021-06-23 10:20:06.435] 16 NRF_PWM3             Non-Secure	OK
[2021-06-23 10:20:06.435] 17 NRF_WDT              Non-Secure	OK
[2021-06-23 10:20:06.435] 18 NRF_IPC              Non-Secure	OK
[2021-06-23 10:20:06.435] 19 NRF_VMC              Non-Secure	OK
[2021-06-23 10:20:06.451] 20 NRF_FPU              Non-Secure	OK
[2021-06-23 10:20:06.451] 21 NRF_EGU1             Non-Secure	OK
[2021-06-23 10:20:06.451] 22 NRF_EGU2             Non-Secure	OK
[2021-06-23 10:20:06.451] 23 NRF_DPPIC            Non-Secure	OK
[2021-06-23 10:20:06.467] 24 NRF_REGULATORS       Non-Secure	OK
[2021-06-23 10:20:06.467] 25 NRF_GPIOTE1          Non-Secure	OK
[2021-06-23 10:20:06.467] 
[2021-06-23 10:20:06.467] SPM: NS image at 0x1c200
[2021-06-23 10:20:06.467] SPM: NS MSP at 0x200255a0
[2021-06-23 10:20:06.467] SPM: NS reset vector at 0x267d5
[2021-06-23 10:20:06.467] SPM: prepare to jump to Non-Secure image.
[2021-06-23 10:20:06.683] *** Booting Zephyr OS build v2.4.99-ncs1  ***
[2021-06-23 10:20:06.683] [00:00:00.206,207] <inf> asset_tracker: Asset tracker started
[2021-06-23 10:20:06.699] [00:00:00.212,402] <inf> watchdog: Watchdog timeout installed. Timeout: 60000
[2021-06-23 10:20:06.699] [00:00:00.220,001] <inf> watchdog: Watchdog started
[2021-06-23 10:20:06.714] [00:00:00.225,372] <inf> watchdog: Watchdog feed enabled. Timeout: 30000
[2021-06-23 10:20:06.721] [00:00:00.233,825] <dbg> nrf_cloud_transport.nct_settings_set: Settings key: p_sesh, size: 4
[2021-06-23 10:20:06.721] [00:00:00.242,736] <dbg> nrf_cloud_transport.nct_settings_set: Read setting val: 1
[2021-06-23 10:20:06.737] [00:00:00.258,300] <dbg> nrf_cloud_transport.nct_client_id_get: client_id = nrf-352656106651436
[2021-06-23 10:20:06.752] [00:00:00.267,547] <dbg> nrf_cloud_transport.nct_topics_populate: shadow_base_topic: $aws/things/nrf-352656106651436/shadow
[2021-06-23 10:20:06.768] [00:00:00.279,327] <dbg> nrf_cloud_transport.nct_topics_populate: accepted_topic: nrf-352656106651436/shadow/get/accepted
[2021-06-23 10:20:06.768] [00:00:00.290,924] <dbg> nrf_cloud_transport.nct_topics_populate: rejected_topic: $aws/things/nrf-352656106651436/shadow/get/rejected
[2021-06-23 10:20:06.783] [00:00:00.303,649] <dbg> nrf_cloud_transport.nct_topics_populate: update_delta_topic: $aws/things/nrf-352656106651436/shadow/update/delta
[2021-06-23 10:20:06.799] [00:00:00.316,619] <dbg> nrf_cloud_transport.nct_topics_populate: update_topic: $aws/things/nrf-352656106651436/shadow/update
[2021-06-23 10:20:06.815] [00:00:00.328,552] <dbg> nrf_cloud_transport.nct_topics_populate: shadow_get_topic: $aws/things/nrf-352656106651436/shadow/get
[2021-06-23 10:20:06.821] [00:00:00.340,606] <inf> asset_tracker: Connecting to LTE network.
[2021-06-23 10:20:06.836] [00:00:00.347,320] <inf> asset_tracker: This may take several minutes.
[2021-06-23 10:20:06.852] [00:00:00.370,758] <inf> lte_lc: Using legacy LTE PCO mode...
[2021-06-23 10:20:11.392] +CEREG: 2,"1421","01871065",9
[2021-06-23 10:20:11.392] [00:00:04.911,193] <inf> asset_tracker: LTE cell changed: Cell ID: 25628773, Tracking area: 5153
[2021-06-23 10:20:22.289] +CSCON: 1
[2021-06-23 10:20:22.292] [00:00:15.799,468] <inf> asset_tracker: RRC mode: Connected
[2021-06-23 10:20:46.274] +CEREG: 5,"1421","01871065",9,,,"11100000","00101100"
[2021-06-23 10:20:46.274] [00:00:39.789,459] <inf> asset_tracker: Connected to LTE network.
[2021-06-23 10:20:46.274] [00:00:39.796,142] <inf> asset_tracker: Connecting to cloud, attempt 1 of 8
[2021-06-23 10:20:46.289] [00:00:39.803,619] <inf> asset_tracker: Cloud connection request sent.
[2021-06-23 10:20:46.289] [00:00:39.810,607] <inf> asset_tracker: Connection response timeout is set to 30 seconds.
[2021-06-23 10:20:46.305] [00:00:39.819,458] <inf> asset_tracker: Network registration status: Connected - roaming
[2021-06-23 10:20:46.305] [00:00:39.828,002] <inf> asset_tracker: PSM parameter update: TAU: 43200, Active time: -1
[2021-06-23 10:20:46.321] [00:00:39.836,791] <dbg> nrf_cloud.api_event_handler: NRF_CLOUD_EVT_TRANSPORT_CONNECTING
[2021-06-23 10:20:46.321] [00:00:39.845,397] <inf> asset_tracker: CLOUD_EVT_CONNECTING
[2021-06-23 10:21:07.149] [00:01:00.672,912] <wrn> date_time: sntp_query, error: -116
[2021-06-23 10:21:16.756] at+cereg?+CEREG: 5,5,"1421","01871065",9,,,"11100000","00101100"
[2021-06-23 10:21:18.871] OK
[2021-06-23 10:21:19.816] at+cgpaddr+CGPADDR: 0,"10.160.177.12"
[2021-06-23 10:21:21.600] OK
[2021-06-23 10:21:23.291] at+cgdcont?+CGDCONT: 0,"IP","IBASIS.IOT","10.160.177.12",0,0
[2021-06-23 10:21:25.117] OK
[2021-06-23 10:21:25.446] at+cgatt?+CGATT: 1
[2021-06-23 10:21:27.248] OK
[2021-06-23 10:21:32.936] at+cesq+CESQ: 99,99,255,255,25,57
[2021-06-23 10:21:34.527] OK
[2021-06-23 10:21:51.611] at%xmonitor%XMONITOR: 5,"","","26203","1421",9,20,"01871065",21,6152,59,40,"","11100000","00101100","01011110"
[2021-06-23 10:21:54.299] OK
[2021-06-23 10:22:12.153] [00:02:05.678,924] <dbg> nrf_cloud_transport.nct_connect: getaddrinfo failed -11
[2021-06-23 10:22:12.168] [00:02:05.686,920] <dbg> nrf_cloud.api_event_handler: NRF_CLOUD_EVT_TRANSPORT_CONNECTING
[2021-06-23 10:22:12.168] [00:02:05.695,556] <inf> asset_tracker: CLOUD_EVT_CONNECTING
[2021-06-23 10:22:12.184] [00:02:05.701,812] <err> asset_tracker: Failed to connect to cloud, error -3
[2021-06-23 10:22:12.184] [00:02:05.709,625] <err> asset_tracker: Network error, check cloud configuration
[2021-06-23 10:22:34.729] at+credesq+CESQ: 99,99,255,255,24,58
[2021-06-23 10:22:37.842] OK
[2021-06-23 10:23:22.171] [00:03:15.689,239] <wrn> date_time: getaddrinfo, error: -11
[2021-06-23 10:23:38.044] AT%XEPCO?%XEPCO: 0
[2021-06-23 10:23:41.471] OK
[2021-06-23 10:24:32.187] [00:04:25.707,061] <wrn> date_time: getaddrinfo, error: -11
[2021-06-23 10:25:42.192] [00:05:35.724,822] <wrn> date_time: getaddrinfo, error: -11
[2021-06-23 10:25:55.739] atOK
[2021-06-23 10:25:58.951] at+cresq+CESQ: 99,99,255,255,24,62
[2021-06-23 10:26:01.837] OK
[2021-06-23 10:26:04.855] at%xmonitor%XMONITOR: 5,"","","26203","1421",9,20,"01871065",21,6152,62,41,"","11100000","00101100","01011110"
[2021-06-23 10:26:08.612] OK
[2021-06-23 10:26:09.244] at+cops?+COPS: 0,2,"26203",9
[2021-06-23 10:26:10.613] OK
[2021-06-23 10:26:11.398] at+cereg?+CEREG: 5,5,"1421","01871065",9,,,"11100000","00101100"
[2021-06-23 10:26:12.849] OK

).