Canon imageCLASS MF275dw Wireless All-In-One Monochrome Laser Printer - Manual (Page 400)

Normally, use the machine with this set to [Off].
When your service representative carries out device maintenance remotely, he or she may change this to [On].
[ Off ]
[On]
[Initialize Network Settings]
[Menu] [Preferences] [Network]
Use this to restore the network settings to the factory settings. Initializing Specific Settings and Data(P. 372)
Settings Menu Items
391