I've got a Fibocom modem on a WE826-T2 router (Flashed with latest GoldenOrb). I'm able to send AT commands and verify the modem working nominally via minicom, but for whatever reason OpenWRT can't connect to it.
T: Bus=01 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1508 ProdID=1001 Rev= 3.18
S: Manufacturer=Fibocom NL668 Modem
S: Product=Fibocom NL668 Modem
I read somewhere that the Fibocom modem needs to be switched to "usbswitching mode" via AT command, but I couldn't find details in documentation.