Billion BiPAC 7800GZ(L) User Manual page 111

Mode: include Volume-based and Time-based control.
Volume-based include "only Download", "only Upload" and "Download and Upload" to limit the flow.
Time-based control the flow by providing specific hours per month.
The billing period begins on: the beginning day of billing each month.
Over usage allowance action: what to do when the flow is over usage allowance, the available
methods are "E-mail Alert", "Email Alert and Disconnect" and "Disconnect".
E-mail alert at percentage of bandwidth: When the used bandwidth exceeds the set proportion,
the system will send email to alert.
Save the statistics to ROM: to save the statistics to ROM system.
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