Mobile Network Issues
LTE interface not getting IP:
-
Please make sure, you recieved any PRIVATEAPN from the service provider.
If so please use the "Add PrivateAPN" option of respective LTE interface in the network appliance UI Interfaces page. -
Disable and Enable the respective LTE interface in the network appliance UI Interfaces page.
-
Make sure all Antennas are connected and are intact, if needed reconnect the Antennas.
LTE interface / Modem not listed:
- Reboot the network appliance.
T-Mobile SIM : 192.0.0.2 IP issue:
Please execute the following AT commands and reboot the network appliance once. If the respevtive LTE interface is not getting IPv4 IP ( not 192.0.0.2 ), repeat the steps and reboot the unit.
Note: Same steps for 4G or 5G.
Find the resepective serial device using the mmcli output to send the AT commands to the Modem.
bash-5.1# mmcli -L
/org/freedesktop/ModemManager1/Modem/1 [QUALCOMM INCORPORATED] QUECTEL Mobile Broadband Module
/org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] QUECTEL Mobile Broadband Module
/org/freedesktop/ModemManager1/Modem/2 [Quectel] RM530N-GL
bash-5.1# mmcli -m 2
----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/2
| device id: e38c985906075c1108a58bb871d2b7c08bd5e205
----------------------------------
Hardware | manufacturer: Quectel
| model: RM530N-GL
| firmware revision: RM530NGLAAR01A02M4G
| carrier config: default
| h/w revision: 20000
| supported: gsm-umts, lte, 5gnr
| current: gsm-umts, lte, 5gnr
| equipment id: 867978050003473
----------------------------------
System | device: /sys/devices/platform/1a0c0000.usb/usb4/4-1
| drivers: option, qmi_wwan
| plugin: quectel
| primary port: cdc-wdm1
| ports: cdc-wdm1 (qmi), ttyUSB6 (at), ttyUSB7 (at), wwan1 (net)Either Minicom or Socat can be used to execute the AT commands. If you see morethan 1 ttyUSB? (at) listed in the mmcli output, start from last one as shown below.
Using minicom :
***************
minicom -D /dev/ttyUSB7
AT+CFUN=0
AT+QMBNCFG="AutoSel",0
AT+QMBNCFG="Deactivate"
AT+QMBNCFG="select","ROW_Generic_3GPP_PTCRB_GCF"
AT+CFUN=1,1
AT+QCFG="CLAT",1,1,"",0,"",0,0,0,0,0,0
AT$QCPRFMOD=PID:1,OVRRIDEHOPDP:"IPV6"
AT+CFUN=1,1
AT$QCPRFMOD=PID:1,OVRRIDEHOPDP:""
AT+QCFG="CLAT",0
AT+QNWPREFCFG="mode_pref", AUTO
#To exit from minicom
Ctrl+A Z
# Reboot the BPI
After AT+CFUN=1,1 , Modem will reset. So 1-2 minutes the minicom session will not work.
Once Modem resets, again it will reconnect.
After that you can execute commands that are after AT+CFUN=1,1.
Once all commands are executed, come out of Minicom and Reboot the BPI.
with the above steps, not getting IPV4 IP, then do the following.
AT+QNWPREFCFG="nr5g_disable_mode",1Using socat :
echo AT+CFUN=0 | sudo socat - /dev/ttyUSB7,crnl
echo AT+QMBNCFG=\"AutoSel\",0 | sudo socat - /dev/ttyUSB7,crnl
echo AT+QMBNCFG=\"Deactivate\" | sudo socat - /dev/ttyUSB7,crnl
echo AT+QMBNCFG=\"Select\",\"ROW_Generic_3GPP_PTCRB_GCF\" | sudo socat - /dev/ttyUSB7,crnl
echo AT+CFUN=1,1 | sudo socat - /dev/ttyUSB7,crnl
sleep 120
echo AT+QCFG=\"CLAT\",1,1,\"\",0,\"\",0,0,0,0,0,0 | sudo socat - /dev/ttyUSB7,crnl
echo AT$QCPRFMOD=PID:1,OVRRIDEHOPDP:\"IPV6\" | sudo socat - /dev/ttyUSB7,crnl
echo AT+CFUN=1,1 | sudo socat - /dev/ttyUSB7,crnl
sleep 120
echo AT$QCPRFMOD=PID:1,OVRRIDEHOPDP:\"\" | sudo socat - /dev/ttyUSB7,crnl
echo AT+QCFG=\"CLAT\",0 | sudo socat - /dev/ttyUSB7,crnl
echo AT+QNWPREFCFG=\"mode_pref\", AUTO | sudo socat - /dev/ttyUSB7,crnl
# Reboot the BPI
After AT+CFUN=1,1 , Modem will reset. So 1-2 minutes, so wait for 2 minutes.
Then you can execute commands that are after AT+CFUN=1,1.
Once all commands are executed, Reboot the BPI.
with the above steps, not getting IPV4 IP, then do the following.
echo AT+QNWPREFCFG=\"nr5g_disable_mode\",1 | sudo socat - /dev/ttyUSB7,crnlModem mode setting: LTE Mode:
echo AT+QNWPREFCFG=\"mode_pref\",LTE | sudo socat - /dev/ttyUSB7,crnl
Once the mode is changed, please Disable and Enable the LTE interface from Edge controller UI interfaces page.
Or reboot the unit once.Power Cycle the LTE Modem(s):
-
5G
power OFF:
echo 0 > /sys/class/gpio/power-5g/valuepower ON:
echo 1 > /sys/class/gpio/power-5g/value -
4G LTE1
power OFF:
echo 0 > /sys/class/gpio/power-lte1/valuepower ON:
echo 1 > /sys/class/gpio/power-lte1/value -
4G LTE2
power OFF:
echo 0 > /sys/class/gpio/power-lte2/valuepower ON:
echo 1 > /sys/class/gpio/power-lte2/valueOnce power cycle commands executed, wait for 1-2 mins.
-
Check "lsusb" command output for Modem reloaded.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 2c7c:0125 Quectel Wireless Solutions Co., Ltd. EC25 LTE modem Bus 001 Device 003: ID 2c7c:0125 Quectel Wireless Solutions Co., Ltd. EC25 LTE modem Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 2c7c:0800 Quectel Wireless Solutions Co., Ltd. RM502Q-AE Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubCheck "mmcli -L" command output for Modem reloaded in ModemManager.
/org/freedesktop/ModemManager1/Modem/1 [QUALCOMM INCORPORATED] QUECTEL Mobile Broadband Module /org/freedesktop/ModemManager1/Modem/0 [QUALCOMM INCORPORATED] QUECTEL Mobile Broadband Module /org/freedesktop/ModemManager1/Modem/2 [Quectel] RM502Q-AEIf the Modem is not listed in "mmcli -L" output, restart the ModemManager service, and check the "mmcli -L" output again.
service ModemManager restartIf that also didn’t help, reboot the newtork appliance once.
AT commands Manuals:
-
For Quectel 5G Modem(s): Please refer the following manual.
https://www.quectel.com/download/quectel_rg50xqrm5xxq_series_at_commands_manual_v1-1-2/ -
For Quectel 4G/LTE Modem(s): Please refer the following manual.
https://forums.quectel.com/uploads/short-url/A4rEKqqtf17nlInpzz8jIhF06GN.pdf