How to tether your Nokia N95s Internet connection to your laptop via USB in Linux

Sometimes you end up somewhere with your laptop where you just can’t find any open WiFi. Luckily you have a Nokia N95 and a USB data cable. I’m going to show you how to tether your N95 to your laptop via USB the quick and dirty command line way, as well as the prettier GUI way. In these examples I am running Fedora 9 and Gnome.

Warning: You probably only want to do this if you have a decent data plan. Using 3G data can result in a very large bill!

  1. You need have the ppp package and the wvdial package installed. If you don’t, you can simply run, as root in a terminal window, yum install ppp wvdial (or use the package manager for your Linux distro).
  2. Start by plugging your phone into the computer with a USB data cable. When the phone prompts you to select the connection mode, select PC Suite.
  3. Now open a terminal window and check your dmesg output. You should see something similar to the following:

    [user@radon ~]$ dmesg
    usb 4-2: new full speed USB device using uhci_hcd and address 16
    usb 4-2: configuration #1 chosen from 1 choice
    cdc_acm 4-2:1.10: ttyACM0: USB ACM device
    usb 4-2: bad CDC descriptors
    usb 4-2: bad CDC descriptors
    usb 4-2: New USB device found, idVendor=0421, idProduct=0070
    usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
    usb 4-2: Product: Nokia N95 8GB
    usb 4-2: Manufacturer: Nokia

    Note the line that says cdc_acm 4-2:1.10: ttyACM0: USB ACM device. This tells us that the phone’s modem is at /dev/ttyACM0.

Now we move on to the quick and dirty command line setup. Feel free to skip to the GUI setup below if you aren’t very comfortable with the command line.

  1. Edit /etc/wvdial.conf and make it look like this:
  2. Modem = /dev/ttyACM0
    Baud = 460800
    SetVolume = 0
    Dial Command = ATDT
    Init1 = ATZ
    Init3 = ATM0
    FlowControl = CRTSCTS

    [Dialer USB]
    Username = user
    Password = pass
    Phone = *99***1#
    Stupid Mode = 1
    Init1 = ATZ
    Inherits = Modem0

  3. I’m using Rogers Wireless in Canada and the above is the minimum configuration that works for me. Literally Username = user and Password = pass. You may need to make changes to the Username, Password, and Phone lines. Contact your wireless provider for the correct details.
  4. I also had to create a script called /etc/ppp/ip-up.local to make the automatic DNS configuration work. Here’s my ip-up.local:
  5. #!/bin/bash

    export PATH
    echo “# created by pppd” > /etc/resolv.conf
    echo “nameserver ${DNS1}” >> /etc/resolv.conf
    echo “nameserver ${DNS2}” >> /etc/resolv.conf
    chmod go+r /etc/resolv.conf

    Don’t forget to chmod 755 /etc/ppp/ip-up.local

  6. Unfortunately I have not been able to connect as a normal user in this configuration so you’ll have to connect as root.

    [root@radon ~]# wvdial USB
    –> WvDial: Internet dialer version 1.60
    –> Cannot get information for serial port.
    –> Initializing modem.
    –> Sending: ATZ
    –> Sending: ATM0
    –> Modem initialized.
    –> Sending: ATDT*99***1#
    –> Waiting for carrier.
    ~[7f]}#@!}!} } }2}#}$@#}!}$}%\}”}&} }*} } g}%~
    –> Carrier detected. Starting PPP immediately.
    –> Starting pppd at Sun Oct 19 16:48:56 2008
    –> Pid of pppd: 8028
    –> Using interface ppp0
    –> local IP address
    –> remote IP address
    –> primary DNS address
    –> secondary DNS address

  7. I removed the lines containing unprintable characters, but otherwise you should see something very similar to above. Note that wvdial stays in the foreground. This is so you can disconnect by simply pressing Ctrl-C.
  8. You can verify that you are online by switching to a new terminal window and running ifconfig.

    [root@radon ~]# ifconfig
    lo Link encap:Local Loopback
    inet addr: Mask:
    inet6 addr: ::1/128 Scope:Host
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:12767 errors:0 dropped:0 overruns:0 frame:0
    TX packets:12767 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:714652 (697.9 KiB) TX bytes:714652 (697.9 KiB)

    ppp0 Link encap:Point-to-Point Protocol
    inet addr: P-t-P: Mask:
    RX packets:4 errors:0 dropped:0 overruns:0 frame:0
    TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:3
    RX bytes:64 (64.0 b) TX bytes:94 (94.0 b)

    [root@radon ~]# ping
    PING ( 56(84) bytes of data.
    64 bytes from ( icmp_seq=1 ttl=46 time=110 ms
    64 bytes from ( icmp_seq=2 ttl=46 time=102 ms
    64 bytes from ( icmp_seq=3 ttl=46 time=164 ms
    64 bytes from ( icmp_seq=4 ttl=46 time=130 ms
    64 bytes from ( icmp_seq=5 ttl=46 time=149 ms
    — ping statistics —
    5 packets transmitted, 5 received, 0% packet loss, time 4513ms
    rtt min/avg/max/mdev = 102.061/131.349/164.376/23.190 ms

  9. Once you are finished online, don’t forget to switch back to the terminal where you ran wvdial and press Ctrl-C.

    ^CCaught signal 2: Attempting to exit gracefully…
    –> Terminating on signal 15
    –> Connect time 4.7 minutes.
    –> Disconnecting at Sun Oct 19 18:24:32 2008

GUI Method

Now, if all that command line stuff scares you, here’s how to make it work using Gnome’s GUI:

  1. Click System -> Administration -> Network
  2. You will be asked to enter your root password. Enter it and click OK.
  3. Now you can see a list of installed network devices. Click on the Hardware tab.

  4. click to enlarge

    click to enlarge

  5. Now click the New button, select Modem, and click OK.
  6. Change the Modem Device to /dev/ttyACM0. If /dev/ttyACM0 is not available in the list, just type it in. Click OK.
  7. Now click the Devices tab.

  8. click to enlarge

    click to enlarge

  9. Click the New button, select Modem connection, and click Forward.

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  11. All I needed to do to make my Rogers Wireless connection work was enter *99***1# as the Phone Number, user as the Login Name, and pass as the Password. I also chose to name this connection USB. Click Forward.

  12. click to enlarge

  13. I left these options at their defaults. Click Forward.

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  15. We’ve finished creating the connection. Click Apply.

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  17. Click the X in the top right corner to close this window.

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  19. Click Yes to save the changes.
  20. Click OK. No, we won’t need to restart the computer.

  21. click to enlarge

  22. So, let’s use our newly created connection. Click System -> Administration -> Network Device Control.
  23. Select the USB connection you just created and click Activate.

  24. click to enlarge

  25. Notice how the USB connection has changed from Inactive to Active.

  26. click to enlarge

  27. Open Firefox and visit

  28. click to enlarge

  29. When you are finished online, go back to the Network Device Control window, select the Active USB connection and click Deactivate.

  30. click to enlarge

  31. Verify that the USB connection is indeed Inactive, then close the Network Device Control window.

  32. click to enlarge

Some of you may be wondering why I chose not to use Network Manager. It’s quite simply due to the fact that mobile broadband support in Network Manager is in it’s infancy and I found it to be virtually unusable. Once Network Manager’s mobile broadband support becomes better, I’ll rewrite this tutorial based on it.

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