Billion BiPAC 7800GZ(L) User Manual page 140

Detection Interval: The period cycle for dead peer detection. The interval can be 180~86400
seconds.
Idle Timeout: Auto-disconnect the IPSec connection after trying several consecutive times.
Add: Click this button to add a new IPSec entry and the added entry will appear at the bottom
table.
Edit: Check Edit next to the item you wish to edit, and then change parameters as desired.
Complete it by press "Edit/Delete".
Delete: Check Delete next to the item you wish to delete, and press "Edit/Delete" to remove this
entry.
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