umodem0, Cisco USB serial console, and quirks

[CeDeROM]

Try to add VID/PID of your device into a usbmodem driver. Use
configurations to see which one works with your device. Rebuild the
module/kernel, reboot, try it out untill success.

After your device is recognised by usbmodem and creates several cuaU*
devices.. still Your device may require uploading a specific firmware
in order for gsm modem to work. You can find those in Windows driver
package.

Use MINICOM for cuaU communications that would save you a debug time.

That works for me - added 3 devices like that with no problem. In fact
they work better on FreeBSD than Windows ;-)


Alternartively, replace your modem with something that is known to
work - for instance QUECTEL EC25 LTE module works far better than my
previous stock 3G module here..

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info