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u3g - USB support for 3G datacards
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
The u3g driver provides support for the multiple USB-to-serial interfaces
exposed by many 3G USB/PCCard modems.
The device is accessed through the ucom(4) driver which makes it behave
like a tty(4).
The u3g driver supports the following adapters:
· Option GT 3G Fusion, GT Fusion Quad, etc. (only 3G part, not WLAN)
· Option GT 3G, GT 3G Quad, etc.
· Vodafone Mobile Connect Card 3G
· Qualcomm Inc. CDMA MSM
· Huawei B190, E220 (’<Huawei Mobile>’)
· Novatal U740, MC950D, X950D, etc.
· Sierra MC875U, MC8775U, etc.
(See /sys/dev/u3g.c for the complete list of supported cards for each
vendor mentioned above.)
The supported 3G cards provide the necessary modem port for ppp, pppd, or
mpd connections as well as extra ports (depending on the specific device)
to provide other functions (additional command port, diagnostic port, SIM
In some of these devices a mass storage device supported by the umass(4)
driver is present which contains Windows and Mac OS X drivers. The
device starts up in disk mode (TruInstall, ZeroCD, etc.) and requires
additional commands to switch it to modem mode.
The u3gstub(4) device will attach temporarily to a 3G device with a mass
storage device and force it to switch to modem mode, The attach and
detach of u3gstub and any driver disk device present on the 3G device is
is hidden, unless the machine was booted in verbose mode (see boot(8)).
To temporarily unhide the device, set debug.bootverbose to 1 using
sysctl(8) and replug the device.
tty(4), ucom(4), usb(4)
The u3g driver appeared in FreeBSD 7.2, is based on the uark(4) driver,
and written by Andrea Guzzo 〈email@example.com〉 in September 2008.
The u3g driver was written by Andrea Guzzo 〈firstname.lastname@example.org〉 and
Nick Hibma 〈email@example.com〉. Hardware for testing was provided by
AnyWi Technologies, Leiden, NL.