There are 2 steps to a network configuration for dialup in OS X (TEN)

First step is going to the network system preferences.
Click on the apple menu and then click on the network icon.
Then set up the configuration as need be.

The second step is going to the Internet Config, which is an application located in the application folders of the hard drive.
You can also access this by clicking on the little handset icon on the top menu bar towards the right.

Please be sure to follow both steps in order to set up a connection correctly.

Thanks for using my Screenshots.