Quectel EC20 uses quectel-CM can't connect to network

IoT Modules LTE Standard Module
1

Hi,
I am using Quectel EC20 module,but when i tried to connect to network by quectel-CM it always sink into "requestRegistrationState2 MCC: 460, MNC: 1, PS: Detached, DataCap: UMTS
" ,and what should i do,please help

microcom /dev/ttyUSB2

ati
Quectel
EC20F
Revision: EC20CEHCLGR06A04M1G

OK
at+csq
+CSQ: 31,99

OK
at+cpin?
+CPIN: READY

OK
at+creg?
+CREG: 0,1

OK
at+cgreg?
+CGREG: 0,2

OK
at+cgatt?
+CGATT: 0

OK
at+cgatt=1
ERROR
at+cops?
+COPS: 0,0,“CHN-UNICOM”,2

OK
at+cgreg?
+CGREG: 0,2

OK

quectel-CM

[01-02_00:18:20:993] WCDMA&LTE_QConnectManager_Linux&Android_V1.1.34
[01-02_00:18:20:994] quectel-CM profile[1] = (null)/(null)/(null)/0, pincode = (null)
[01-02_00:18:20:996] Find /sys/bus/usb/devices/2-1.1 idVendor=2c7c idProduct=0125
[01-02_00:18:20:996] Find /sys/bus/usb/devices/2-1.1:1.4/net/wwan0
[01-02_00:18:20:997] Find usbnet_adapter = wwan0
[01-02_00:18:20:998] Find /sys/bus/usb/devices/2-1.1:1.4/usbmisc/cdc-wdm0
[01-02_00:18:20:998] Find qmichannel = /dev/cdc-wdm0
[01-02_00:18:21:011] cdc_wdm_fd = 7
[01-02_00:18:21:089] Get clientWDS = 18
[01-02_00:18:21:121] Get clientDMS = 1
[01-02_00:18:21:153] Get clientNAS = 3
[01-02_00:18:21:185] Get clientUIM = 1
[01-02_00:18:21:217] Get clientWDA = 1
[01-02_00:18:21:250] requestBaseBandVersion EC20CEHCLGR06A04M1G
[01-02_00:18:21:345] requestGetSIMStatus SIMStatus: SIM_READY
[01-02_00:18:21:377] requestGetProfile[1] 3gnet///0
[01-02_00:18:21:409] requestRegistrationState2 MCC: 460, MNC: 1, PS: Detached, DataCap: UMTS
[01-02_00:18:21:442] requestQueryDataCall IPv4ConnectionStatus: DISCONNECTED
[01-02_00:18:21:505] requestRegistrationState2 MCC: 460, MNC: 1, PS: Detached, DataCap: UMTS
[01-02_00:18:26:561] requestRegistrationState2 MCC: 460, MNC: 1, PS: Detached, DataCap: UMTS
[01-02_00:18:31:681] requestRegistrationState2 MCC: 460, MNC: 1, PS: Detached, DataCap: UMTS
…

2

Dear Keng，
Thanks for your inquiry in Quectel forum.
About your issue, please confirm whetehr your SIM card is normal now, the following log show that the module ca not register on PS(Package switch circuit) network, which may be caused by your SIM card business. Please confirm whether there have the private APN information need to configured. And also can change another SIM card to have a try. Thanks!

image
image724×59 4.6 KB

3

Dear Kyson,
Thanks for your advice.
My module is connecting to network now, my card needs to be activated to use it

4

Hi,
My Quectel EC20 was connecting to network before, but now it doesn’t work anymore.

Here is the detail:
microcom /dev/ttyUSB2:
AT+CSQ
+CSQ: 6,99

OK
AT+CPIN?
+CPIN: READY

OK
AT+COPS?
+COPS: 0,0,“MN MobiCom”,2

OK

quectel-CM -s 3gnet &
[08-31_11:10:43:468] WCDMA&LTE_QConnectManager_Linux&Android_V1.1.34
[08-31_11:10:43:469] quectel-CM profile[1] = 3gnet///0, pincode = (null)
[08-31_11:10:43:469] Find /sys/bus/usb/devices/1-1.3 idVendor=2c7c idProduct=0125
[08-31_11:10:43:469] Find /sys/bus/usb/devices/1-1.3:1.4/net/wwan0
[08-31_11:10:43:469] Find usbnet_adapter = wwan0
[08-31_11:10:43:469] Find /sys/bus/usb/devices/1-1.3:1.4/usbmisc/cdc-wdm0
[08-31_11:10:43:469] Find qmichannel = /dev/cdc-wdm0
[08-31_11:10:43:479] cdc_wdm_fd = 7
[08-31_11:10:43:553] Get clientWDS = 7
[08-31_11:10:43:585] Get clientDMS = 1
[08-31_11:10:43:617] Get clientNAS = 2
[08-31_11:10:43:649] Get clientUIM = 1
[08-31_11:10:43:681] Get clientWDA = 1
[08-31_11:10:43:713] requestBaseBandVersion EC20CEHDLGR06A09M1G
[08-31_11:10:43:809] requestGetSIMStatus SIMStatus: SIM_READY
[08-31_11:10:43:809] requestSetProfile[1] 3gnet///0
[08-31_11:10:43:873] requestGetProfile[1] 3gnet///0
[08-31_11:10:43:905] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:10:43:937] requestQueryDataCall IPv4ConnectionStatus: DISCONNECTED
[08-31_11:10:44:001] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:10:58:976] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
[08-31_11:11:04:033] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:11:19:521] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
[08-31_11:11:24:577] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:11:39:969] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
[08-31_11:11:39:970] requestSetOperatingMode(1)
[08-31_11:11:40:001] requestSetOperatingMode(0)
[08-31_11:11:55:808] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[08-31_11:11:56:289] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:11:56:321] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:00:833] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:05:888] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:10:944] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:16:000] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:21:057] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:26:113] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:26:113] requestSetOperatingMode(1)
[08-31_11:12:26:144] requestSetOperatingMode(0)
[08-31_11:12:41:697] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[08-31_11:12:42:049] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:42:081] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:46:721] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:51:776] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:12:56:832] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:01:889] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:06:944] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:12:001] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:12:001] requestSetOperatingMode(1)
[08-31_11:13:12:034] requestSetOperatingMode(0)
[08-31_11:13:27:584] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[08-31_11:13:27:969] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:28:001] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:32:609] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:13:37:666] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
^C[08-31_11:13:39:714] QmiWwanThread exit
[08-31_11:13:39:716] main exit

ifconfig wwan0
wwan0 Link encap:Ethernet HWaddr d2:d3:20:4f:f4:e5
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:14490 (14.1 KiB)

Sometimes, it is stuck at:
[08-31_11:21:12:672] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:21:12:672] requestSetOperatingMode(1)
[08-31_11:21:12:705] requestSetOperatingMode(0)
[08-31_11:21:14:208] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[08-31_11:21:14:720] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:21:14:752] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:21:19:232] requestRegistrationState2 MCC: 428, MNC: 99, PS: Detached, DataCap: UMTS
[08-31_11:21:23:648] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:21:23:712] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:21:26:240] requestSetupDataCall WdsConnectionIPv4Handle: 0x8721c170
[08-31_11:21:26:304] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:21:26:336] requestQueryDataCall IPv4ConnectionStatus: CONNECTED
[08-31_11:21:26:369] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
[08-31_11:21:26:433] ifconfig wwan0 up
[23434.155076] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
[23434.164304] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
[08-31_11:21:26:457] busybox udhcpc -f -n -q -t 5 -i wwan0
udhcpc: started, v1.31.0
udhcpc: sending discover
[08-31_11:21:29:409] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: UMTS
udhcpc: sending discover
udhcpc: sending discover
udhcpc: sending discover
udhcpc: sending discover
udhcpc: no lease, failing
[08-31_11:22:11:201] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: LTE
[08-31_11:22:29:921] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[08-31_11:22:30:145] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: LTE
[08-31_11:22:30:177] requestRegistrationState2 MCC: 428, MNC: 99, PS: Attached, DataCap: LTE

I am using it in Mongolia.

5

Hi Maral:

It looks like the network the device is using is WCDMA,
Does this happen suddenly on the device? Did you update the system or do anything else?
Have you confirmed whether the SIM card is in a normal state, and have you changed other SIM cards for a comparison test?

6

Hi Keane,

I am using Embedded Linux. I built the system following MYD-C8MMX Linux development guide.
SIM card is in normal state, and used different SIM cards.

Also, I tested pppd call quectel-dial. I got the ip address and connected to the network.
It didn’t work before, but now it is working fine.
I hope it will work tomorrow too.