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Manual Pages  — U3G

NAME

u3g – USB support for 3G and 4G datacards

CONTENTS

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file: device usb device ucom device u3g

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): 

u3g_load="YES"

If neither of the above is done, the driver will automatically be loaded by devd(8) when the device is connected.

DESCRIPTION

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).

HARDWARE

The u3g driver supports the following adapters:

(See /sys/dev/usb/serial/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, or mpd connections as well as extra ports (depending on the specific device) to provide other functions (additional command port, diagnostic port, SIM toolkit port).

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. If your device is not switching automatically, please try to add quirks. See usbconfig(8) and usb_quirk(4).

FILES

/dev/ttyU*.* for callin ports
/dev/ttyU*.*.init
/dev/ttyU*.*.lock
  corresponding callin initial-state and lock-state devices

/dev/cuaU*.* for callout ports
/dev/cuaU*.*.init
/dev/cuaU*.*.lock
  corresponding callout initial-state and lock-state devices

EXAMPLES

Connect to the Internet using the default configuration: 
ppp -background u3g

SEE ALSO

tty(4), ucom(4), usb(4), usb_quirk(4), devd(8), ppp(8), usbconfig(8)

HISTORY

The u3g driver appeared in FreeBSD 7.2, is based on the uark(4) driver, and written by Andrea Guzzo <Mt aguzzo@anywi.com> in September 2008.

AUTHORS

The u3g driver was written by Andrea Guzzo <Mt aguzzo@anywi.com> and Nick Hibma <Mt n_hibma@FreeBSD.org>. Hardware for testing was provided by AnyWi Technologies, Leiden, NL.

BUGS

The automatic mode switch from disk mode to modem mode does not work unless the driver is either built into the kernel or loaded before the device is connected.
U3G (4) February 4, 2023
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