NEC NRS Expanded Series Configuration Manual page 258

ISSUE 1.0
2.
3.
15-8
Select the restore type from the following three options.
Restore Defaults: Restore all parameters, except the network (including IP

address, subnet mask, gateway, MTU, NIC working mode, default route, server port,
etc.) and user account parameters, to the factory default settings.
Factory Defaults: Restore all parameters to the factory default settings.

Restore to Inactive: Restore the device to the inactive status.

Click the OK button to restore the default settings.
The device automatically reboots after being restored to the default settings.
NOTE
NVR Management and Maintenance