if running a recent kernel, just plugin and check option module is being loaded
$ lsmod | grep option
also look in /var/log/messages
$ less /var/log/messages
option 5-2:1.0: GSM modem (1-port) converter detected
usb 5-2: GSM modem (1-port) converter now attached to ttyUSB0
option 5-2:1.1: GSM modem (1-port) converter detected
usb 5-2: GSM modem (1-port) converter now attached to ttyUSB1
use this /etc/wvdial.conf
[Dialer hsdpa]
Phone = *99***1#
Username = vodafone
Password = vodafone
Stupid Mode = 1
Dial Command = ATDT
Modem = /dev/ttyUSB0
Baud = 460800
Init2 = ATZ
Init3 = ATE0V1&D2&C1S0=0+IFC=2,2
ISDN = 0
Modem Type = Analog Modem
Init5 =AT+CGDCONT=1,"IP","vfinternet.au";
connect using this command (check you’re in the
wvdial hsdpa
The latest version of Ubuntu (and I think Fedora as well) supports these out of the box with NetworkManager. It’s basically just a case of plug-and-play. There’s nothing extra to install.
This level of usability is not even approached by any other OS :)