<html><body> Hello, I am working with a Sierra Wireless 7511 with an AT&T (APN=BROADBAND) running on Cent OS 7. I cannot get the command <pre> mbim-network start</pre> to start [root@localhost ~]# cat /etc/mbi-network.conf APN=AT&T PROXY=yes [root@localhost ~]# uname -a Linux localhost.localdomain 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019×86_64 x86_64 x86_64 GNU/Linux [root@localhost ~]# cat /etc/redhat-release CentOS Linux release 7.6.1810 (Core) [root@localhost ~]# lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M <pre> |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M</pre> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/7p, 480M <pre> |__ Port 5: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 2: Dev 4, If 0, Class=Communications, Driver=cdc_mbim,</pre> 480M <pre> |__ Port 2: Dev 4, If 1, Class=CDC Data, Driver=cdc_mbim, 480M |__ Port 2: Dev 4, If 2, Class=Vendor Specific Class,</pre> Driver=qcserial, 480M <pre> |__ Port 2: Dev 4, If 4, Class=Vendor Specific Class, Driver=, 480M |__ Port 3: Dev 5, If 0, Class=Human Interface Device,</pre> Driver=usbhid, 1.5M [root@localhost ~]# dmesg | grep -ie sierra [ 2.281951] usb 1-5.2: Product: Sierra Wireless EM7511 Qualcomm® Snapdragon™ X16 LTE-A [ 2.281956] usb 1-5.2: Manufacturer: Sierra Wireless, Incorporated [root@localhost ~]# Here is the output [root@localhost ~]# mbim-network /dev/cdc-wdm0 start Profile at ‘/etc/mbim-network.conf’ not found… Loading previous state from /tmp/mbim-network-state-cdc-wdm0… <pre> Previous Transaction ID: 7</pre> error: no actions specified Clearing state at /tmp/mbim-network-state-cdc-wdm0… Querying subscriber ready status ‘mbimcli -d /dev/cdc-wdm0 --query-subscriber-ready-status --no-close ‘… [/dev/cdc-wdm0] Subscriber ready status retrieved: Ready state: ‘initialized’ Subscriber ID: ‘310410786050384’ SIM ICCID: ‘89014103277860503841’ Ready info: ‘none’ Telephone numbers: (1) ‘15635492225’ [/dev/cdc-wdm0] Session not closed: TRID: ‘4’ Saving state at /tmp/mbim-network-state-cdc-wdm0… (TRID: 4) Querying registration state ‘mbimcli -d /dev/cdc-wdm0 --query-registration-state --no-open=4 --no-close ‘… [/dev/cdc-wdm0] Registration status: Network error: ‘unknown’ Register state: ‘deregistered’ Register mode: ‘automatic’ Available data classes: ‘unknown’ Current cellular class: ‘gsm’ Provider ID: ‘unknown’ Provider name: ‘unknown’ Roaming text: ‘unknown’ Registration flags: ‘manual-selection-not-available, packet-service-automatic-attach’ [/dev/cdc-wdm0] Session not closed: TRID: '5’ Saving state at /tmp/mbim-network-state-cdc-wdm0… (TRID: 5) Attaching to packet service with 'mbimcli -d /dev/cdc-wdm0 --attach-packet-service --no-open=5 --no-close '… error: operation failed: RadioPowerOff Saving state at /tmp/mbim-network-state-cdc-wdm0… (TRID: 6) Starting network with 'mbimcli -d /dev/cdc-wdm0 --connect=apn=’’ --no-open=6 --no-close '… error: operation failed: RadioPowerOff Network start failed [/dev/cdc-wdm0] Session not closed: TRID: '7’ Saving state at /tmp/mbim-network-state-cdc-wdm0… (TRID: 7) I don't understand why the profile is not found nor why the error : operation fialed: RadioPowerOff Your insight would be greatly appreciated. Thanks Michael <img src="http://url2018.tritel.io/wf/open?upn=uHJpSD721dT8zvYGu5T1gRsJZkxibr-2FHKkUtilupw8sOOJ9wayq8ULLmGVidoOqKacppTHqw8A82jE2cbt5Wvkcl-2B3kxNrYWcfhcklBXnDnLMxMYH5hybHQ6DWjj-2B7KhSWkG8uay5DQeuE5kVg99J5XXuq-2BdUBXgL-2FJ0xed1vl0aiOS0iyWujK7M1tFS0WR8Bl-2FCsCHZu9fOnoePpm-2BFl7gVB7N0Be4OGKOmu0288VFJbRl4xzd94Lt-2FmrtB-2F-2B-2Bi" alt="" width="1" height="1" border="0" style="height:1px !important;width:1px !important;border-width:0 !important;margin-top:0 !important;margin-bottom:0 !important;margin-right:0 !important;margin-left:0 !important;padding-top:0 !important;padding-bottom:0 !important;padding-right:0 !important;padding-left:0 !important;"/> </body></html>