D-Link DSL-4320L User Manual page 20

Section 3 - Getting Started
If the router detected or you selected PPPoA, enter your PPPoA username
and password and click Next to continue.
Note: Make sure to remove your PPPoA software from your computer. The
software is no longer needed and will not work through a router.
If the router detected or you selected Static, enter the IP and DNS settings
supplied by your ISP. Click Next to continue.
D-Link DSL-4320L User Manual 16