Quectel EG916Q-GL in ECM mode

Mark Corbin mcorbin at lunarenergy.com
Tue Jul 1 15:21:08 UTC 2025


Hello

I'm trying to configure a Quectel EG916Q for ECM mode so that it will work
under NetworkManager (v1.46.0) as an Ethernet device.

ModemManager (v1.22.0) reports the following:
|              drivers: option, cdc_ether
|               plugin: quectel
|         primary port: ttyUSB2
|                ports: enu1i4 (net), ttyUSB2 (at), ttyUSB3 (at)

but I guess that I need the primary port to be 'enu1i4'? Currently
NetworkManager can only see ttyUSB2 as a device (nmcli d).

The debug output of ModemManager shows:
ModemManager[4247]: <inf> [modem0] net/enu1i4: net (data)
ModemManager[4247]: <dbg> [modem0] net ports available but ignored

Is there a way to configure this modem so that it will work in ECM mode?

Thanks

Mark
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*Mark Corbin *
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