How to connect Ubuntu Linux to Dial-up network

Here are the steps to connect Ubuntu 11.04 to Dial-up network. The very similar connection procedure can be followed to other higher versions of Ubuntu.
Connection to Dial-up network can be done in two different ways -

1.  Using wvdial
      In the terminal type the following commands
     $sudo apt-get install wvdial
      and then edit the /etc/wvdial.conf
     And fill it up with settings provided by your ISP.

2. Using gnome-ppp
 Details are given in this link :
Just follow them and you will be done!