Hibernation from : until :

 Switch off wireless network (WLAN)

Turning off the radio network saves electricity. The WLAN can be enabled at any time using your telephone (key code #96*1*) or the WLAN button.

 The wireless network cannot be switched off until no more WLAN equipment is active.

 Enable Do Not Disturb setting

The Do Not Disturb setting keeps telephones from ringing.