Billion BiPAC 7800(N) User Manual page 61

Group Key Renewal: The period of renewal time for changing the security key automatically
between wireless client and Access Point (AP). Default value is 3600 seconds.
If you want to enable the RADIUS function, check Enable and then do the following settings.
RADIUS Server IP Address: The IP address of RADIUS authentication server.
RADIUS Server Port: The port number of RADIUS authentication server here. Default value is
1812.
RADIUS Shared Secret: The password of RADIUS authentication server.
Click Apply to confirm the settings.
57