How to connect VOIP with Wireless internet?

installation steps:
a) Please connect the power supply to the telephone
b) Add wireless profile
-Select the "Setup button" button and move the down arrow key to "Network Configuration". Press the "Select" button.
-Select "Wi-Fi Configuration" and select the "Center Select button" button.
-Select "Wireless Profile", select "Select" button.
-Select the "Scan" button to scan your home wireless network, such as "LinksysAp". Move the down arrow key to "LinksysAp" and select "Add".
-The arrow moves to "Security Mode", and the right arrow selects "WPA2PSK".
-Move down arrow to “Cipher Type”, press right arrow to select “AES CCMP”.
-Move the down arrow to “WPA Shared Key” and enter the password of the wireless router.
-Select "Save" and select "Connect" button.