D-Link DSL-2745 User Manual page 143

Section 5 - Connecting To Your Wireless Network
5. Enter the same security key or passphrase (Wi-Fi password) that is
on your router and click Connect. You can also connect by pushing
the WPS button on the router.
It may take 20-30 seconds to connect to the wireless network. If the
connection fails, please verify that the security settings are correct. The
key or passphrase must be exactly the same as on the wireless router.
D-Link DSL-2745 Wireless N300 ADSL2+ Modem Router User Manual 138