Olivetti P26W, P20W manual Your change. To exit without saving your modification

LEVEL 1		LEVEL 2	LEVEL 3
99:Exit setup
6.	When configuration is complete, select [Exit Setup] to save
	your change. To exit without saving your modification,
	select [Quit].
7.	Turn the printer off and on again.

The network card continues to use pre-transmission settings until the printer is turned off and back on again.

Network Configuration> 43