I have been trying to get my USB modem running on my Fedora machine since the last couple of days, but unsuccessfully. Finally after a little bit of probing on the internet, I finally got it running(Hurray!). Here’s how I went about doing it:
1)Connect the USB modem. Open the terminal and type wvdialconf wvdial.conf . Wvdial is text based ppp dialer that helps you connect to the internet.
2)The dialer utility scans all ports and automatically detects the modem. Mine was found on /dev/ttyACM0. The configuration is stored in /etc/wvdial.conf . You need to open the config file. It looks something like:
3)You need to change the username password to internet and the phone number to #777. Save and exit.
4)Now dial wvdial. I have created a seperate configuration for my modem and named it tata. You don’t need to do that except in the case you are using some other connection and you don’t want to bother with changing the .config file repeatedly. You see something like:
5)Voila!! You are now connected! 
. Open your browser and start surfing!
