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    Quectel EC20 LTE Module

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    • T
      tibo
      last edited by

      Hi all,

      I'm trying to configure my Quectel EC20 miniPCIe Module    (Qualcomm, Inc. Acer Gobi 2000 Wireless Modem from linux lsusb)

      I tried to configure a ppp  on the  /dev/cuau0  device  and associate an OPT1 interface

      
usbconfig dump_device_desc

ugen3.2: <quectel quectel="" lte="" module="">at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000  <probed by="" interface="" class="">bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x05c6 
  idProduct = 0x9215 
  bcdDevice = 0x0232 
  iManufacturer = 0x0001  <quectel>iProduct = 0x0002  <quectel lte="" module="">iSerialNumber = 0x0000  <no string="">bNumConfigurations = 0x0001</no></quectel></quectel></probed></quectel> 

      
Mar 3 01:02:35    ppp       [opt1_link0] CHAT: The modem is not responding to "AT" at ModemCmd: label.
Mar 3 01:02:35    ppp       [opt1_link0] MODEM: chat script failed
Mar 3 01:02:35    ppp       [opt1_link0] Link: DOWN event
Mar 3 01:02:35    ppp       [opt1_link0] LCP: Down event

      it's not registered in the Known_Working_3G-4G_Modems page https://doc.pfsense.org/index.php/Known_Working_3G-4G_Modems

      any ideas ?

      1 Reply Last reply Reply Quote 0
      • ?
        Guest
        last edited by

        You will have to figure out the usb mode switching commands before you can use this. On top of that, pfSense doesn't support the fast protocols like MBIM.

        1 Reply Last reply Reply Quote 0
        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Those are very similar to the Sierra modems I believe. You may be able to change the presented USB profile under Windows or Linux to something FreeBSD recognises.

          What do you see from?:

          usbconfig -d ugen3.2 dump_all_config_desc

          Steve

          1 Reply Last reply Reply Quote 0
          • T
            tibo
            last edited by

            Hi, thanks for the replies !

            I don't know if the modem requires the usb mode switching.
            It works well under linux grace to modemmanager (perhaps mm does the usb mode switching) and I'm not sure about the differences between qmi and mbim but the modem seems to use qmi :

            
root@linux# ls -l /sys/class/net/wwp0s20f0u12i4/device/driver/module
lrwxrwxrwx 1 root root 0 Mar  4 22:53 /sys/class/net/wwp0s20f0u12i4/device/driver/module -> ../../../../module/qmi_wwan

root@linux# ls /dev/cdc*
/dev/cdc-wdm0

root@linux# ls -l  /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Mar  4 22:44 usb-Quectel_Quectel_LTE_Module-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Mar  4 22:44 usb-Quectel_Quectel_LTE_Module-if01-port0 -> ../../ttyUSB1
lrwxrwxrwx 1 root root 13 Mar  4 22:44 usb-Quectel_Quectel_LTE_Module-if02-port0 -> ../../ttyUSB2
lrwxrwxrwx 1 root root 13 Mar  4 22:44 usb-Quectel_Quectel_LTE_Module-if03-port0 -> ../../ttyUSB3

            For test purpose I must admit that I use a virtualize pfsense under kvm from linux where I "mount" the host USB lte device into the pfsense guest, but this should not be a problem.

            As pfSense doesn't support the fast protocols like MBIM, perhaps it supports qmi ?

            Here is the output of command : usbconfig -d ugen3.2 dump_all_config_desc

            
usbconfig -d ugen3.2 dump_all_config_desc
ugen3.2: <quectel quectel="" lte="" module="">at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x00d1 
    bNumInterfaces = 0x0005 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string="">bmAttributes = 0x00a0 
    bMaxPower = 0x00fa 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff  <vendor specific="">bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string="">Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <in>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0001  <out>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

    Interface 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00ff  <vendor specific="">bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string="">Additional Descriptor

      bLength = 0x05
      bDescriptorType = 0x24
      bDescriptorSubType = 0x00
       RAW dump: 
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      Additional Descriptor

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      bDescriptorSubType = 0x01
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      Additional Descriptor

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      bDescriptorType = 0x24
      bDescriptorSubType = 0x02
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       0x00 | 0x04, 0x24, 0x02, 0x02

      Additional Descriptor

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      bDescriptorSubType = 0x06
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     Endpoint 0
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        bEndpointAddress = 0x0083  <in>bmAttributes = 0x0003  <interrupt>wMaxPacketSize = 0x000a 
        bInterval = 0x0009 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <in>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0002  <out>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

    Interface 2
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0002 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00ff  <vendor specific="">bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string="">Additional Descriptor

      bLength = 0x05
      bDescriptorType = 0x24
      bDescriptorSubType = 0x00
       RAW dump: 
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      Additional Descriptor

      bLength = 0x05
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      bDescriptorSubType = 0x01
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      Additional Descriptor

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      Additional Descriptor

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     Endpoint 0
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        bEndpointAddress = 0x0085  <in>bmAttributes = 0x0003  <interrupt>wMaxPacketSize = 0x000a 
        bInterval = 0x0009 
        bRefresh = 0x0000 
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     Endpoint 1
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        bEndpointAddress = 0x0084  <in>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
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        bEndpointAddress = 0x0003  <out>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

    Interface 3
      bLength = 0x0009 
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      bInterfaceNumber = 0x0003 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00ff  <vendor specific="">bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string="">Additional Descriptor

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      bDescriptorSubType = 0x00
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      Additional Descriptor

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      Additional Descriptor

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      Additional Descriptor

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     Endpoint 0
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        bEndpointAddress = 0x0087  <in>bmAttributes = 0x0003  <interrupt>wMaxPacketSize = 0x000a 
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        bRefresh = 0x0000 
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        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

    Interface 4
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0004 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0003 
      bInterfaceClass = 0x00ff  <vendor specific="">bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string="">Endpoint 0
        bLength = 0x0007 
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        bEndpointAddress = 0x0089  <in>bmAttributes = 0x0003  <interrupt>wMaxPacketSize = 0x0040 
        bInterval = 0x0009 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0088  <in>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0005  <out>bmAttributes = 0x0002  <bulk>wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
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        bSynchAddress = 0x0000</bulk></out></bulk></in></interrupt></in></no></vendor></bulk></out></bulk></in></interrupt></in></no></vendor></bulk></out></bulk></in></interrupt></in></no></vendor></bulk></out></bulk></in></interrupt></in></no></vendor></bulk></out></bulk></in></no></vendor></no></quectel>
            1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator
              last edited by

              I believe the E20 runs the same Qualcom linux flavour (or very similar) that the Sierra devices do so you may be able to change the USB profile from it's command line.

              It looks like currently it's presenting a QMI interface only (there is only one config index) which means pfSense cannot talk to it.

              Try connecting to those ttyUSB ports in Linux and look for an AT prompt. Looks like it's probably ttyUSB3.

              If you do get a command line you might try this or something similar:
              https://forum.pfsense.org/index.php?topic=140301.msg766861#msg766861

              You might just get one of those Sierra modems instead though.

              Steve

              1 Reply Last reply Reply Quote 0
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