Huawei E1550 3G modem
This article describes how to configure Huawei E1550 3G modems.
Preparing device
This modem is a generic device, but there are two caveats:
Switching into modem mode
By default kernel recognizes it as usb-storage device (SCSI CD-ROM). It is true, because of this modem contains MicroSD card (up to 4Gb) reader and internal flash.
To turn on modem you should run
$ /lib/udev/usb_modeswitch --vendor 0x12d1 --product 0x1446 --type option-zerocd
command.
See also the usb_modeswitch package, which you may need in future since in udev-157 modem-modeswitch has been renamed and changed as described in the commit. This package does not need any modifications, just install it.
Also you can create udev's config: /etc/udev/rules.d/15-huawei-e1550.rules
/etc/udev/rules.d/15-huawei-e1550.rules
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1446", RUN+="/lib/udev/usb_modeswitch --vendor 0x12d1 --product 0x1446 --type option-zerocd"
After that, modem changes its USB IDs to 12d1:140c and /proc/bus/usb/devices shows new USB endpoints.
Loading the driver
usbserial is proper driver for this modem, but probably it does not recognize it, so you should force it, passing USB IDs.
# modprobe usbserial vendor=0x12d1 product=0x140c
or put options into /etc/modprobe.d/modprobe.conf
/etc/modprobe.d/modprobe.conf
... options usbserial vendor=0x12d1 product=0x140c ...
(do not forget to rmmod usbserial if it is already loaded before)
Naming the device (optional)
You can generate symlinks to the ttyUSB* ports for a more human readable configuration with udev rules.
For a Huawei device which identifies with the USB ID 12D1:1001 after modeswitching and has 3 serial ports:
SUBSYSTEMS=="usb", ATTRS{modalias}=="usb:v12D1p1001*", KERNEL=="ttyUSB*", ATTRS{bInterfaceNumber}=="00", ATTRS{bInterfaceProtocol}=="ff", SYMLINK+="ttyUSB_utps_modem"
SUBSYSTEMS=="usb", ATTRS{modalias}=="usb:v12D1p1001*", KERNEL=="ttyUSB*", ATTRS{bInterfaceNumber}=="01", ATTRS{bInterfaceProtocol}=="ff", SYMLINK+="ttyUSB_utps_diag"
SUBSYSTEMS=="usb", ATTRS{modalias}=="usb:v12D1p1001*", KERNEL=="ttyUSB*", ATTRS{bInterfaceNumber}=="02", ATTRS{bInterfaceProtocol}=="ff", SYMLINK+="ttyUSB_utps_pcui"
For a Huawei device which identifies with the USB ID 12D1:1003 after modeswitching and has 2 serial ports:
SUBSYSTEMS=="usb", ATTRS{modalias}=="usb:v12D1p1003*", KERNEL=="ttyUSB*", ATTRS{bInterfaceNumber}=="00", ATTRS{bInterfaceProtocol}=="ff", SYMLINK+="ttyUSB_utps_modem"
SUBSYSTEMS=="usb", ATTRS{modalias}=="usb:v12D1p1003*", KERNEL=="ttyUSB*", ATTRS{bInterfaceNumber}=="01", ATTRS{bInterfaceProtocol}=="ff", SYMLINK+="ttyUSB_utps_pcui"
Connecting to the network
Now you have new 2 or 3 devices.Most likely first of them (ttyUSB0 if you had not such devices before) is PPP compatible modem. Use it as usual with pppd, kppp, gnome-ppp, network-manager, etc.
Using gammu
Use to access cell phones functionalities.
Edit
~/.gammurc
[gammu] port=/dev/ttyUSB0 connection=at name=huawei e1550 model=
you can also generate the config using
$ gammu-detect > ~/.gammurc
Sending SMS:
$ gammu sendsms TEXT +7123456789 -text qwe
find device info:
$ gammu identify
for gui use or .
Using Gnome Calls and Chatty
Install and callsAUR to have basic GUI for calls and SMS. gnome-calls also supports using USSD codes in dialer.
USSD Requests
Use ussd.php tool.