MC7455 - Connection sequence to LTE network

IoT Modules MC/EM Series
21

Your solution did not work unfortunately without using mbim-network or qmicli with the following command respectively :

# with mbim-network
mbim-network /dev/cdc-wdm0 start

# with qmicli
qmicli -p -d /dev/cdc-wdm0 --device-open-net='net-raw-ip|net-no-qos-header' --wds-start-network="apn='mobiledata',',ip-type=4" --client-no-release-cid
22

You need to try the old GOBI driver if you need to use AT command only:

https://source.sierrawireless.com/resources/airprime/software/usb-drivers-linux-qmi-software-s2,-d-,42n2,-d-,64/#sthash.P1pqZyA7.dpbs

But you need to black list the qcserial and qmi_wwan driver if you use the Gobi driver.
e.g.
add the following to the “/etc/modprobe.d/blacklist-modem.conf” file in Ubuntu PC and restart the host :
blacklist qcserial
blacklist qmi_wwan

1 Like
23

Hello jyijyi,

As you recommend, I installed Gobi driver, etc and i successfully setup my LTE connection only with AT commands.

Thank you very much for all your help and time.

Best regards,