Using UMTS modems

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This document gives instructions on using UMTS modems with a Huawei K3765 as example.


Contents

Install three applications

wvdial

A utility that helps in making modem-based connections to the internet (http://en.wikipedia.org/wiki/Wvdial). 

slapt-get -i wvdial

usb_modeswitch

A mode switching tool for controlling "flip flop" (multiple device) USB gear (http://www.draisberghof.de/usb_modeswitch/#intro). 

slapt-get -i usb_modeswitch

comgt

Comgt is a command line tool for controlling, configuring and interacting with Option Wireless 3G and 2G ( HSDPA, UMTS, EDGE, GPRS, GSM) data devices within the Linux environment (http://sourceforge.net/projects/comgt/). 

wget http://sourceforge.net/projects/comgt/files/comgt/0.32/comgt.0.32.tgz
tar xvf comgt.0.32.tgz
cd comgt.0.32
make all
make install

Set up the wvdial

Save this content to the /etc/wvdial.conf. 

[Dialer Defaults]
Modem = /dev/ttyUSB0
ISDN = off
Modem Type = USB Modem
Baud = 460800
Init = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init4 =
Init5 =
Init6 =
Init7 =
Init8 =
Init9 =
Phone1 =
Phone2 =
Phone3 =
Phone4 =
Dial Prefix =
Dial Attempts = 1
Dial Command = ATM1L3DT
Ask Password = off
Auto Reconnect = off
Abort on Busy = off
Carrier Check = on
Check Def Route = on
Abort on No Dialtone = on
Stupid Mode = off
Idle Seconds = 0
Init3 = AT+CGDCONT=1,"IP","internet"
Password = vodafone
Username = vodafone
Phone = *99#

You can change the last four lines for your provider. This setting is for Vodafone in Czech Republuc - Europe 

APN (Access Point Name): internet
Username: vodafone
Password: vodafone
Phone number for dial-up = *99#

Prepare the dialling

When you have KDE or GNOME, you can set-up kppp or gnome-ppp. For Xfce you need create next dialling script /usr/local/bin/umts-connect with "x" attribut.


Save this content to the file /usr/local/bin/umts-connect. 

#!/bin/bash
#
# umts-connect 0.3
#
# Script to connect UMTS modems
# via comgt (PIN activation) and wvdial
#
# - icon with established connection
# - used volume is shown after the connection is closed
# - choice of the device (modem, handy via usb or bluetooth
#
# Thomas Schönhütl <pilleus.pulcher@arcor.de>
# 22. September 2008
# 20. April 2009
# 20. Juli 2009
#
# Lizenz: GPL, Version 2
#
DEVICE=$(zenity --title "Modem/Handy" --width=400 --height=200 --radiolist --text "Which device shall be used?" --list --column Choice --column Device TRUE "UMTS-Modem (USB/PCMCIA/Express34)" FALSE "Handy/PDA via USB connection" FALSE "Handy/PDA via bluetooth")
if [ -z "`echo $DEVICE`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
#
#
if [ "`echo $DEVICE`" = "UMTS-Modem (USB/PCMCIA/Express34)" ]; then
#
if [ -z "`/bin/ls /dev/ttyUSB*`" -a -z "`/bin/ls /dev/ttyACM*`" ]; then
zenity --title "UMTS connection" --info --text "No UMTS modem available!\n\nThe script will finish now ..."
exit
fi
#
PIN=$(zenity --title "PIN" --entry --text "Please insert the PIN of the SIM card:" --hide-text)
#
export COMGTPIN=$PIN
/usr/local/bin/comgt PIN -d /dev/ttyUSB0
#
WAHL=$(zenity --title "UMTS connection" --list --radiolist --text "Use the last configuration?" --column Choice --column Action TRUE "Yes, use it." FALSE "No, configure a new one.")
#
if [ -z "`echo $WAHL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
if [ "`echo $WAHL`" = "Yes, use it." ]; then
sed -i "s:ttyACM:ttyUSB:" /etc/wvdial.conf
sed -i "s:rfcomm0:ttyUSB0:" /etc/wvdial.conf
export MAIN_DIALOG="
<window title=\"UMTS connection\">
<hbox>
<vbox>
<text>
<label>Preparing the UMTS modem for wvdial ...</label>
</text>
</vbox>
</hbox>
</window>"
{
sleep 15
killall gtkdialog
} | gtkdialog -c --program MAIN_DIALOG
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
else
TEL=$(zenity --title "UMTS connection" --entry --text "Insert telefonnumber or accept:" --entry-text *99#)
if [ -z "`echo $TEL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
NETZ=$(zenity --title "UMTS connection" --entry --text "Please insert APN of the provider:")
if [ -z "`echo $NETZ`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
USER=$(zenity --title "UMTS connection" --entry --text "Please insert username:")
if [ -z "`echo $USER`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
PASSWD=$(zenity --title "UMTS connection" --entry --text "Please insert password:")
if [ -z "`echo $PASSWD`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
tac /etc/wvdial.conf | sed -e '1,4d' | tac > /tmp/wvdial.conf
echo "Init3 = AT+CGDCONT=1,\"IP\",\"`echo $NETZ`\"" >> /tmp/wvdial.conf
echo "Password = `echo $PASSWD`" >> /tmp/wvdial.conf
echo "Username = `echo $USER`" >> /tmp/wvdial.conf
echo "Phone = `echo $TEL`" >> /tmp/wvdial.conf
rm -f /etc/wvdial.conf
mv /tmp/wvdial.conf /etc/
sed -i "s:ttyACM:ttyUSB:" /etc/wvdial.conf
sed -i "s:rfcomm0:ttyUSB0:" /etc/wvdial.conf
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
fi
killall zenity
fi
#
#
#
if [ "`echo $DEVICE`" = "Handy/PDA via USB connection" ]; then
if [ -z "`/bin/ls /dev/ttyUSB*`" -a -z "`/bin/ls /dev/ttyACM*`" ]; then
zenity --title "UMTS connection" --info --text "No UMTS modem available!\n\nThe script will finish now ..."
exit
fi
#
#
WAHL=$(zenity --title "UMTS connection" --list --radiolist --text "Use the last configuration?" --column Choice --column Action TRUE "Yes, use it." FALSE "No, configure a new one.")
#
if [ -z "`echo $WAHL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
if [ "`echo $WAHL`" = "Yes, use it." ]; then
sed -i "s:ttyUSB:ttyACM:" /etc/wvdial.conf
sed -i "s:rfcomm0:ttyACM0:" /etc/wvdial.conf
export MAIN_DIALOG="
<window title=\"UMTS connection\">
<hbox>
<vbox>
<text>
<label>Preparing Handy/PDA for wvdial ...</label>
</text>
</vbox>
</hbox>
</window>"
{
sleep 4
killall gtkdialog
} | gtkdialog -c --program MAIN_DIALOG
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
else
TEL=$(zenity --title "UMTS connection" --entry --text "Insert telefonnumber or accept:" --entry-text *99#)
if [ -z "`echo $TEL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
NETZ=$(zenity --title "UMTS connection" --entry --text "Please insert APN of the provider:")
if [ -z "`echo $NETZ`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
USER=$(zenity --title "UMTS connection" --entry --text "Please insert username:")
if [ -z "`echo $USER`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
PASSWD=$(zenity --title "UMTS connection" --entry --text "Please insert password:")
if [ -z "`echo $PASSWD`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
tac /etc/wvdial.conf | sed -e '1,4d' | tac > /tmp/wvdial.conf
echo "Init3 = AT+CGDCONT=1,\"IP\",\"`echo $NETZ`\"" >> /tmp/wvdial.conf
echo "Password = `echo $PASSWD`" >> /tmp/wvdial.conf
echo "Username = `echo $USER`" >> /tmp/wvdial.conf
echo "Phone = `echo $TEL`" >> /tmp/wvdial.conf
rm -f /etc/wvdial.conf
mv /tmp/wvdial.conf /etc/
sed -i "s:ttyUSB:ttyACM:" /etc/wvdial.conf
sed -i "s:rfcomm0:ttyACM0:" /etc/wvdial.conf
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
fi
killall zenity
fi
#
#
#
if [ "`echo $DEVICE`" = "Handy/PDA via bluetooth" ]; then
zenity --title "UMTS connection" --info --text "Some handies must be paired with the pc before this script will work, just try it!\n\nPair the handy with the pc and make the pc known in the handy as allowed device ..."
#
if [ "`hcitool dev | awk '{ print $2 $3 }'`" = "" ]; then
zenity --title "UMTS connection" --info --text "No bluetooth device available!\n\nThe script will finish now!"
/etc/rc.d/rc.bluetooth stop
/etc/rc.d/rc.bluetooth start
exit
fi
#
#
OLD=$(cat /etc/bluetooth/hcid.conf | grep passkey | cut -d " " -f2 | sed -e 's/\";//' -e 's/\"//')
PIN=$(zenity --title "UMTS connection" --entry --text "The actual PIN of the pc is `echo $OLD`. It can be changed now:" --entry-text `echo $OLD`)
echo $PIN > /etc/bluetooth/passkeys/default
if [ -z "`echo $PIN`" ]; then
/etc/rc.d/rc.bluetooth stop
/etc/rc.d/rc.bluetooth start
exit
fi
sed -i "s/`echo $OLD`/`echo $PIN`/" /etc/bluetooth/hcid.conf
zenity --title "UMTS connection" --info --text "The actual PIN of the pc is `echo $PIN`!"
#
#
zenity --title "UMTS connection" --progress --text "Scanning for bluetooth devices in range ..." --pulsate --auto-close &
hcitool scan > ERG
EMPF=`cat ERG | sed -e '1d' -e 's/ //g'`
rm -f ERG
killall zenity
#
if [ "`echo $EMPF | awk '{ print $1 }'`" = "" ]; then
zenity --title "UMTS connection" --info --text "No bluetooth devices in range!\n\nThe script will finish now!"
/etc/rc.d/rc.bluetooth stop
/etc/rc.d/rc.bluetooth start
exit
fi
#
EMPFWAHL=$(zenity --title "UMTS connection" --list --radiolist --text "Choose the bluetooth device:" --column Choice --column Device TRUE "`echo $EMPF | cut -d " " -f1,2`" FALSE "`echo $EMPF | cut -d " " -f3,4`" FALSE "`echo $EMPF | cut -d " " -f5,6`")
if [ -z "`echo $EMPFWAHL`" ]; then
/etc/rc.d/rc.bluetooth stop
/etc/rc.d/rc.bluetooth start
exit
fi
#
#
KANAL=$(sdptool search dun | grep -i "`echo $EMPFWAHL | cut -d " " -f1`" -A 9 | grep Channel | cut -d ":" -f2 | sed -e 's: ::g')
rfcomm connect 0 "`echo $EMPFWAHL | cut -d " " -f1`" "`echo $KANAL`" &
#
#
WAHL=$(zenity --title "UMTS connection" --list --radiolist --text "Use the last configuration?" --column Choice --column Action TRUE "Yes, use it." FALSE "No, configure a new one.")
#
if [ -z "`echo $WAHL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
if [ "`echo $WAHL`" = "Yes, use it." ]; then
sed -i "s:ttyUSB0:rfcomm0:" /etc/wvdial.conf
sed -i "s:ttyACM0:rfcomm0:" /etc/wvdial.conf
export MAIN_DIALOG="
<window title=\"UMTS connection\">
<hbox>
<vbox>
<text>
<label>Preparing Handy/PDA for wvdial ...</label>
</text>
</vbox>
</hbox>
</window>"
{
sleep 30
killall gtkdialog
} | gtkdialog -c --program MAIN_DIALOG
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
#sleep 30 && tail /var/log/messages | grep DNS | sed 's/ primary  //' | sed 's/ secondary//' \ | cut -d" " -f8 | while read line; do echo "nameserver $line" > /etc/resolv.conf; done
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
else
TEL=$(zenity --title "UMTS connection" --entry --text "Insert telefonnumber or accept:" --entry-text *99#)
if [ -z "`echo $TEL`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
NETZ=$(zenity --title "UMTS connection" --entry --text "Please insert APN of the provider:")
if [ -z "`echo $NETZ`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
USER=$(zenity --title "UMTS connection" --entry --text "Please insert username:")
if [ -z "`echo $USER`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
PASSWD=$(zenity --title "UMTS connection" --entry --text "Please insert password:")
if [ -z "`echo $PASSWD`" ]; then
zenity --title "UMTS connection" --info --text "The script will finish now ..."
exit
fi
#
tac /etc/wvdial.conf | sed -e '1,4d' | tac > /tmp/wvdial.conf
echo "Init3 = AT+CGDCONT=1,\"IP\",\"`echo $NETZ`\"" >> /tmp/wvdial.conf
echo "Password = `echo $PASSWD`" >> /tmp/wvdial.conf
echo "Username = `echo $USER`" >> /tmp/wvdial.conf
echo "Phone = `echo $TEL`" >> /tmp/wvdial.conf
rm -f /etc/wvdial.conf
mv /tmp/wvdial.conf /etc/
sed -i "s:ttyUSB0:rfcomm0:" /etc/wvdial.conf
sed -i "s:ttyACM0:rfcomm0:" /etc/wvdial.conf
(xterm -title "Please do NOT close this window during the connection ..." -e wvdial && ERG=$(echo "`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '2,3d'`+`tail /var/log/messages | grep Sent | tr " " "\n" | grep bytes -1 | sed -e '2,3d' | sed -e '1d' | sed -e '2d'`" | bc -l) && ERG1=$(echo "`echo $ERG`/1024" | bc -l) && ERG2=$(echo $ERG1 | cut -d "." -f1) && zenity --info --text "Used data volume:\n\n`echo $ERG2` Kb" && killall zenity) &
#sleep 30 && tail /var/log/messages | grep DNS | sed 's/ primary  //' | sed 's/ secondary//' \ | cut -d" " -f8 | while read line; do echo "nameserver $line" > /etc/resolv.conf; done
sleep 45
rm /etc/resolv.conf
echo "nameserver `tail -30 /var/log/messages | grep DNS | sed -e '2d'| rev | cut -d " " -f1 | rev`" > /etc/resolv.conf
while [ "`ps -e | grep wvdial`" ]; do zenity --notification --window-icon=/usr/share/pixmaps/vinagre.svg --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`" && zenity --info --text "UMTS connection: activ; local IP: `ifconfig | grep P-t-P | tr " " "\n" | grep addr | cut -b 6-`; DNS: `cat /etc/resolv.conf`"; continue; done
fi
killall zenity
rfcomm release "`echo $EMPFWAHL | cut -d " " -f1`" "`echo $KANAL`"
fi
#

Set up file attributs

Set up X (executable) attribut of the file /usr/local/bin/umts-connect. 

chmod a+x /usr/local/bin/umts-connect

ldconfig

Run ldconfig command. ldconfig creates the necessary links and cache to the most recent shared libraries found in the directories specified on the command line, in the file /etc/ld.so.conf, and in the trusted directories (/lib and /usr/lib). 

ldconfig

Set-up modem and dialling

Create link to the file /etc/ppp/resolv.conf.

Remove file /etc/resolv.conf and cretae symlink to the file /etc/ppp/resolv.conf. 

rm /etc/resolv.conf
ln -s /etc/ppp/resolv.conf /etc/resolv.conf

Set-up modem type

Save modem type setting to the files /etc/usb_modeswitch.conf and /etc/usb_modeswitch.setup. For example for UMTS modem Huawei K3765 write these setings to the files. 

##
# Huawei K3765
#
# Contributor: Felix Schwarz
DefaultVendor=  0x12d1
DefaultProduct= 0x1520
TargetVendor=   0x12d1
TargetProduct=  0x1465 
MessageContent="55534243123456780000000000000011060000000000000000000000000000"

For params of other UMTS modems see to the author's web http://www.draisberghof.de/usb_modeswitch.

Using modem and connecting to the Internet

Restart PC or notebook after theese settings. After reboot run /usr/local/bin/umts-connect (under root rights) when you have Xfce or use dialling utils gnome-ppp (GNOME) or kppp (KDE).

See also

Retrieved from "https://docs.salixos.org/wiki/index.php?title=Using_UMTS_modems&oldid=2730"