3G connection with Linux and Option Globetrotter GT Max "7.2 ready"

The installation instructions for the software are Debian specific. The configuration files are specific to Saunalahti Mobiililaajakaista (Saunalahti mobile broadband) in Finland.

Installation

Install wvdial and pppd

apt-get install wvdial pppd

Create and edit /etc/ppp/peers/wvdial

usepeerdns
plugin passwordfd.so
noauth
name wvdial
defaultroute
replacedefaultroute
noipdefault
novj
nobsdcomp

Edit /etc/wvdial.conf

[Dialer Defaults]
Modem = /dev/ttyUSB0
Baud = 115200
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CFUN=1;+CGDCONT=1,"IP","internet.saunalahti"
Area Code =
Phone = *99#
Username = saunalahti
Password = saunalahti
Ask Password = 0
Dial Command = ATD
FlowControl=NOFLOW
Stupid Mode = 1
Compuserve = 0
Force Address =
Idle Seconds = 3000
DialMessage1 =
DialMessage2 =
ISDN = 0
Auto DNS = 1

Run wvdial

sudo wvdial

You should now be connected. If you aren’t then check for potential solutions below.

Troubleshooting

Kernel modules

Check that modules USB_SERIAL_OPTION and USB_SERIAL are built as modules or into the kernel.

Conflicting drivers

This is identified by a rapidly flashing purple light in your modem. You must disable and blacklist the usb_storage module, because it interferes with the built in modem.

Disable usb_storage module

rmmod usb_storage
cat /etc/modprobe.d/blacklist | grep "blacklist usb_storage" || echo "blacklist usb_storage" >> /etc/modprobe.d/blacklist
pccardctl eject
pccardctl insert

Device in wrong state

If you completely fail to get a response from the modem then you probably need to run the usb_modeswitch utility. You can check if this is the problem using lsusb. Below are the correct and incorrect values.

Correct value of lsusb (no need to run usb_modeswitch). Notice the row containing “0af0:6701 Option”.

marko@x61s:~$ lsusb
Bus 008 Device 003: ID 0af0:6701 Option 
Bus 008 Device 001: ID 0000:0000  
Bus 007 Device 001: ID 0000:0000  
Bus 006 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
Bus 005 Device 001: ID 0000:0000  
Bus 002 Device 003: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader
Bus 002 Device 002: ID 0a5c:2110 Broadcom Corp. 
Bus 002 Device 001: ID 0000:0000  
Bus 004 Device 001: ID 0000:0000  
Bus 003 Device 001: ID 0000:0000  

Incorrect value of lsusb (you should run usb_modeswitch). Notice the row containing “05c6:1000 Qualcomm, Inc.”.

marko@x61s:~$ lsusb
Bus 008 Device 002: ID 05c6:1000 Qualcomm, Inc. 
Bus 008 Device 001: ID 0000:0000  
Bus 007 Device 001: ID 0000:0000  
Bus 006 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
Bus 005 Device 001: ID 0000:0000  
Bus 002 Device 003: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader
Bus 002 Device 002: ID 0a5c:2110 Broadcom Corp. 
Bus 002 Device 001: ID 0000:0000  
Bus 004 Device 001: ID 0000:0000  
Bus 003 Device 001: ID 0000:0000  

Compile usb_modeswitch

wget "http://frederick-reid.com/usb_modeswitch/usb_modeswitch-0.9.1beta.tar.bz2"
tar xjvf usb_modeswitch-0.9.1beta.tar.bz2 -C /usr/src
cd /usr/src/usb_modeswitch-0.9.1beta
gcc -l usb -o usb_modeswitch usb_modeswitch.c
mv -i usb_modeswitch /usr/bin

Create /etc/usb_modeswitch.conf with the following contents (NOTE: if you need to revert back then swap the values of “Default” and “Target”).

DefaultVendor=  0x05c6
DefaultProduct= 0x1000

TargetVendor=   0x0af0
TargetProduct=  0x6600

MessageEndpoint=0x05
MessageContent="55534243706ede860000000000000601000000000000000000000000000000"

Finally run usb_modeswitch

usb_modeswitch

PPPD dying

If you start connecting, but lose it with pppd dying (like below), then re-check your /etc/wvdial.conf file. Your card may need a pin before it can be used. Or, as in my case, I had a typo where I had written “internet.saunalahti” instead of “saunalahti.internet” :)

marko@x61s:~$ sudo wvdial
--> WvDial: Internet dialer version 1.56
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2
ATQ0 V1 E1 S0=0 &C1 &D2
OK
--> Sending: AT+CFUN=1;+CGDCONT=1,"IP","saunalahti.internet"
AT+CFUN=1;+CGDCONT=1,"IP","saunalahti.internet"
OK
--> Modem initialized.
--> Idle Seconds = 3000, disabling automatic reconnect.
--> Sending: ATD*99#
--> Waiting for carrier.
ATD*99#
CONNECT 3600000
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Sat Oct 20 21:49:26 2007
--> Pid of pppd: 6010
--> Using interface ppp0
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> Disconnecting at Sat Oct 20 21:49:28 2007
--> The PPP daemon has died: A modem hung up the phone (exit code = 16)
--> man pppd explains pppd error codes in more detail.
--> Try again and look into /var/log/messages and the wvdial and pppd man pages for 

No device found

If your /dev/ttyUSBn devices don’t exist you might need to create them.

Create ttyUSBn devices

mknod /dev/ttyUSB0 c 188 0
mknod /dev/ttyUSB1 c 188 1
mknod /dev/ttyUSB2 c 188 2
chmod g+w /dev/ttyUSB?
chown root.dialout /dev/ttyUSB?

Permission errors

If you get permission errors then you aren’t running wvdial with leveraged privileges. Adding yourself to groups dialout and dip will get you a bit further, but the initial connection still needs to be run as root as files /etc/ppp/chap-secrets and /etc/ppp/pap-secrets are only writable to root. There is a guide for gentoo for setting up ppp access as non-root, but I have yet to try it myself.

Add yourself to groups dialup and dip

usermod -a -G dialout,dip marko

A successful connection

This is what a successful connection will look like.

x61s:# sudo wvdial
--> WvDial: Internet dialer version 1.56
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2
ATQ0 V1 E1 S0=0 &C1 &D2
OK
--> Sending: AT+CFUN=1;+CGDCONT=1,"IP","internet.saunalahti"
AT+CFUN=1;+CGDCONT=1,"IP","internet.saunalahti"
OK
--> Modem initialized.
--> Idle Seconds = 3000, disabling automatic reconnect.
--> Sending: ATD*99#
--> Waiting for carrier.
ATD*99#
CONNECT 3600000
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Sat Oct 20 22:13:05 2007
--> Pid of pppd: 9174
--> Using interface ppp0
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> pppd: �+
--> local  IP address 8x.7x.2xx.6x
--> pppd: �+
--> remote IP address 10.xx.xx.xx
--> pppd: �+
--> primary   DNS address 19x.19x.5x.10x
--> pppd: �+
--> secondary DNS address 19x.7x.0.4x
--> pppd: �+
rm --> pppd: �+
--> Connect time 44.9 minutes.

Updated 2566 days ago