43Devices menuPhone bookEnables access to the private phone book and the system phone book.This can also be quickly accessed with the or navigation key or via the key.Time/AlarmsIn this menu you can set the date and time, program appointments and alarm clock times anddefine the formats for the date and time display.AudioIn this menu you can make settings for the volume, ringer and attention tones.Call filterThe call filter* allows you to answer or block incoming calls. You can specify the call numbers andthe filter status in the menu.Call diversionCall diversion enables you to forward calls to other internal / external phones. A call can be forwar-ded immediately, when the connection is busy or after a certain time.SystemIn this menu you can specify the active system for your handset and administer registrations to diffe-rent systems as well as read the IPEI number and information on the status of hardware and soft-ware.System menuThis menu enables you to set automatic call-back and call waiting functions.SettingsDevice settings, such as key lock, key programming, user name, display settings, illumination,Blue-tooth etc., are available here.Protection functionsThis menu can be accessed via the PIN (Personal Identification Number). On delivery, it is 0-0-0-0 (4 xzero). Here you can block the handset (lock), change the PIN, program an emergency number, entersettings for the alarm sensor (in 630d only) as well as completely or partially reset the handset to itsstate on delivery.* if supported by the system