The only method that I know of to accomplish this, is to connect a power generator or UPS (uninterruptable power supply) to the PSU. So the plug that comes from the ONT- PSU to the wall should be hooked through a device (generator or UPS) that will provide it will full power.
The ONT will disable the data connection once it detects that power has failed. The BBU only enables voice/ emergency calls to be made.
Written by gene kim
Last updated on 06.30.07