Add Huawei E3372H 607 to A1300 Slate Plus

In the earlier firmware, the modem light would do a double blink, green (power ON, no network found). Now there is a single blink, every 2 seconds, Green (2G connection available). And as i said earlier, the router cannot see/identify the modem.
Additionally, this is what i see in the system log:

Wed Dec 21 15:01:37 2022 user.info : luci: accepted login on / for root from 192.168.8.189
Wed Dec 21 15:02:54 2022 kern.info kernel: [ 350.743104] usb 1-1: USB disconnect, device number 3
Wed Dec 21 15:02:54 2022 kern.info kernel: [ 350.746931] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Wed Dec 21 15:02:54 2022 kern.info kernel: [ 350.749285] option 1-1:1.0: device disconnected
Wed Dec 21 15:02:55 2022 kern.info kernel: [ 350.762671] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Wed Dec 21 15:02:55 2022 kern.info kernel: [ 350.763010] option 1-1:1.1: device disconnected
Wed Dec 21 15:02:55 2022 kern.info kernel: [ 350.770042] huawei_cdc_ncm 1-1:1.2 wwan0: unregister ‘huawei_cdc_ncm’ usb-xhci-hcd.0.auto-1, Huawei CDC NCM device
Wed Dec 21 15:03:44 2022 kern.info kernel: [ 400.418309] usb 1-1: new high-speed USB device number 4 using xhci-hcd
Wed Dec 21 15:03:44 2022 kern.info kernel: [ 400.644742] usb-storage 1-1:1.0: USB Mass Storage device detected
Wed Dec 21 15:03:44 2022 kern.info kernel: [ 400.645415] scsi host0: usb-storage 1-1:1.0
Wed Dec 21 15:03:45 2022 kern.info kernel: [ 400.945741] usb 1-1: USB disconnect, device number 4
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 401.818410] usb 1-1: new high-speed USB device number 5 using xhci-hcd
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.145778] option 1-1:1.0: GSM modem (1-port) converter detected
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.146392] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.151858] option 1-1:1.1: GSM modem (1-port) converter detected
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.158125] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.379304] huawei_cdc_ncm 1-1:1.2: MAC-Address: 00:1e:10:1f:00:00
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.379356] huawei_cdc_ncm 1-1:1.2: setting rx_max = 16384
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.394850] huawei_cdc_ncm 1-1:1.2: NDP will be placed at end of frame for this device.
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.395314] huawei_cdc_ncm 1-1:1.2: cdc-wdm0: USB WDM device
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.403215] huawei_cdc_ncm 1-1:1.2 wwan0: register ‘huawei_cdc_ncm’ at usb-xhci-hcd.0.auto-1, Huawei CDC NCM device, 00:1e:10:1f:00:00
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.410158] usb-storage 1-1:1.3: USB Mass Storage device detected
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.421716] scsi host0: usb-storage 1-1:1.3
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.427345] usb-storage 1-1:1.4: USB Mass Storage device detected
Wed Dec 21 15:03:46 2022 kern.info kernel: [ 402.436609] scsi host1: usb-storage 1-1:1.4
Wed Dec 21 15:03:47 2022 kern.notice kernel: [ 403.458908] scsi 1:0:0:0: Direct-Access HUAWEI TF CARD Storage 2.31 PQ: 0 ANSI: 2
Wed Dec 21 15:03:47 2022 kern.notice kernel: [ 403.460876] scsi 0:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2
Wed Dec 21 15:03:47 2022 kern.warn kernel: [ 403.469504] sd 1:0:0:0: Power-on or device reset occurred
Wed Dec 21 15:03:47 2022 kern.notice kernel: [ 403.485491] sd 1:0:0:0: [sda] Attached SCSI removable disk
Wed Dec 21 15:06:14 2022 user.info : luci: accepted login on / for root from 192.168.8.189

OK. This firmware seems to enable NCM support for the modem, and it cannot be configured in the gl-inet GUI.
We need to go into the LuCI interface, login as root (same password as in gl-inet). On opening the network > interfaces page, where one sees the LAN, WAN, WWAN and other connections, BUT NO MODEM.
Go to the bottom of the page and press the “add new interface” button.
Give the new interface a name “LTE” and a protocol of “NCM” (drop-down list), and create the interface.
Now you will see’LTE’ has been added as a new interface. On the right, use the ‘EDIT’ button to edit the properties of LTE interface

  1. General Page
    Leave the protocol at NCM
    Modem device> use the drop-down menu to select your modem (mine was dev/tty/usb0)
    Leave the network mode at ‘Modem Default’.
    Leave the IP protocol at IPv4
    enter the APN for your modem (it is usually www or internet or something you get from your wireless provider, the same people who sold you your SIM card).
  2. Firewall settings page (3rd page within edit LTE interface)
    In create/assign a firewall zone> use the dropdown menu to select wan, wan6, wwan (the other drop-down options are LAN, unspecified and guest)
    Hit Save and then again, save the changes on the interfaces page (it will be a green/blue text indicating that there are x unsaved changes.
    The Modem Works!
    Solved?? Not Yet!!!

The LuCI shows connection with packets sent / recieved, however, the GL-iNET GUI refuses to show the modem. All we can see is a network configuration error in red. Modem shows a solid blue/cyan light indicating good 4G connectivity.

1 Like

But you shared the screenshot that shows the modem connecting and config. Can you explain?

If you say that the modem cannot be identified at all, then we just solved a case like this (a different modem). But pls clarify.

Seems a remote check is necessary.

Thanks @alzhao , see the edited post above.

Thanks for your sharing. Definately the UI has a bug that does not show the modem and NCM.

We will fix.

This is my laptop connected to the Slate plus A1300, only with the modem connected to the router. You can see no active connection on the internet page for the router, and the laptop still showing full internet connectivity. The same GUI problem exists for the LED of the router, which remains blinking in blue colour (not solid white) indicating no internet. GUI for 4.2.0 Snapshot definitely needs to be rewritten.

Hi tamapa01:

Sorry, there is a bug. The latest firmware will be updated.

Thanks!