Setting up 3G dongle/USB Modems for linux

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CGDCONT=1,"IP”,"<APN of Internet provider>"
Stupid Mode = 1
Modem Type = USB Modem
New PPPD = no
Modem = /dev/ttyUSB2
ISDN = 0
Auto Reconnect = 1
Phone = *99#
Username = <Provider username>
Password = <Provider password>
Baud = 460800
Carrier Check = no

wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-data-20151101.tar.bz2 #or latest
wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-2.2.6.tar.bz2  #or latest