Canon imagePROGRAF GP-4000 - Manual (Page 225)

Selecting Enable allows you to activate discontinuous reception when the printer is connected to a
device compatible with wired LAN.
◦ Reset SSL certificates ◦
Initializes SSL certificate information.
◦ Reset LAN settings ◦
Initializes the network settings on the printer.
After resetting, perform setup again as necessary.
225