====== Huawei E220 with linux ======

There are two ways to connect your linux-machine to internet using a huawei E220. One is with the relatively new tool **umtsmon**, which provides a GUI, allows you to send SMS and change your PIN, has a connect- and disconnect-button but you need to click away a few warnings and cannot be used to start automatically and you need to install a few additional packages before you can use it.\\
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Or you can use **good-old ppp** directely, which does not have a GUI, but should run on almost any system with a recent kernel.\\
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I have tested both ways sucessfully on a ubuntu 7.10-system. And of course umtsmon uses ppp internally as well.
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====== pre-knowledge ======

There are some false rumours and some needed informtion.

  - You dont need to deactivate the PIN-code. umtsmon and ppp can handle it.
  - You can have the modem plugged in when booting. No Problem.
  - let the modem time. It needs time after plugging in, it needs time when problems come up. Wait and try again and it might have healed itself - whatever the problem was. UMTS-devices are not fast but sensible :)
  - the modem offers three virtual usb-connection. Two command-connection and one virtual cd-drive that holds some useless windows-drivers. umtsmon needs to know about both command-connections.
  - the modem needs to be activated to work. Windows-driver does it. And so does the linuxtool huaweiAktBb by Miroslav Bobovsky which can be downloaded at [[http://www.kanoistika.sk/bobovsky/archiv/umts/huaweiAktBbo.c|his page]] or  {{knowwiki:howtos:huaweiaktbbo.c|here}}. You need to compile and run this file to activte and use the modem before you proceed.
    - download the file
    - **apt-get install libusb-dev libqt3-mt-dev**
    - cc huaweiAktBbo.c -lusb -o huaweiAktBbo
    - as root : copy the file huaweiAktBbo to /usr/sbin
    - as root : run the file

====== umtsmon ======

Mainly this is a short version of the howto from [[http://forum.ubuntuusers.de/topic/83052/240/?p=1080170#1080170|scorpion2211]]. Thnx and all regards to him.\\
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I describe all steps for ubuntu 7.10-users. Being root helps with the following steps:\\
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  - did you run huaweiAktBbo?
  - **apt-get install qt3-dev-tools**  and answer Y//es// to all questions :)
  - download umtsmon-source from [[http://umtsmon.sourceforge.net/|umtsmon]] and
    - unpack it and change to folder
    - qmake
    - make clean all
    - move the whole umtsmon-folder to /usr/local/  and optionally create a symlink from the umtsmon-file to /usr/bin/  like : **ln -s /usr/local/umtsmon-0.7/umtsmon /usr/bin/umtsmon**
  - as user : run umtsmon
     - click ignore on the first two boxes
     - enter your pin-code.  If umtsmon fails with a "unknown-SIM-message" first time after entering again, just start it again and you'll be fine.
     - create a new profile with your APN-node. (can be found [[http://linux.frankenberger.at/Huawei_E220.html#daten|here]] for austria/germany/switzerland.  For the austrian company YESSS its web.yesss.at and username/password stays empty.  
      - connect and you are in :)
      - next time you start just click ignore two times and press connect and thats it.

If you want to disconnect press the disconnect-button. If this fails, you can run **poff ppp0** as root. \\
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Note the dis- and reconnecting the modem may make umtsmon fail (as ppp) - read the "device not found" - section at the end of this page !!


====== ppp =====

This is a short from http://linux.frankenberger.at/Huawei_E220.html. Actually there is nothing to add to his howto. Its perfect.\\
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Just be sure to read on the "device not found"-section.\\
And be sure to know that the long line starting with **ABORT BUSY ...** actually belongs to the line above (or just delete it) and that the **CONNECT \d\c** - command at the end of the file had to be deleted in my case as well.


====== device not found =====

after disconnecting and reconnecting the usb-port may change and all you nice scripts and umtsmon will fail. \\
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umtsmon-error:\\
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<code>
Could not write to serial device: No such device
##P1 t=065: *** CRITICAL ERROR: Could not write to device (anymore)
</code>
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Most likely then the usb-ports are not ttyUSB0 and ttyUSB1 but ttyUSB3 and ttyUSB2.
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so then start umtsmon like **umtsmon -s /dev/ttyUSB3,/dev/ttyUSB2** or - if using ppp directly -  change ttyUSB0 to ttyUSB2 in your configfile. Be sure to change things back next time you start your system or start umtsmon like **umtsmon -s /dev/ttyUSB1,/dev/ttyUSB0** next time, cause it remembers the settings.