Hello
i bought a Sierra Wireless card EM7455, that I would like to use for a 4G internet connection.
Strange is, that sometimes the connection is steady without any interruptions. But on some days it is either not working at all, or on and off.
Today I have an LTE connection with RSSI: -71 dBm
There is nothing strange with dmesg:
[ 8.863745] cdc_mbim 1-1.3:1.12: cdc-wdm0: USB WDM device
[ 8.871548] cdc_mbim 1-1.3:1.12 wwan0: register 'cdc_mbim' at usb-3f980000.usb-1.3, CDC MBIM
But on Luci under network interfaces, the interface goes between the following three statuses:
- Error: Network device is not present
- Error: Modem connection in progress. Please wait. This process will timeout after 2 minutes.
- IPv4: x.x.x.x/24
I use the card via modem manager. My config is as follows:
config interface 'sierra'
option proto 'modemmanager'
option device '/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3'
option iptype 'ipv4'
option apn '****'
option pincode '****'
But maybe there is a better way to use this card. Maybe via mbim? But how would I connect via mbim?
Thanks for your help