Terms you should know141Off-hookAny line selected to make a call or receive an incoming call.The term off-hook is applied whether (a) the end user lifts up thehandset, (b) the end user presses a line key, (c) the call isautomatically answered at the telephone, or (d) a line isautomatically selected for an outgoing call.Paging toneA special tone (two beeps followed by dial tone) that soundswhen you use the Radio Paging feature.Ringback/ring toneA sound indicating that a call you have made is ringing at itsdestination.Services keyA fixed key used to access options such as Telephone Options,Password Admin, Virtual Office Login, Virtual Office Logout, TestLocal Mode, and Resume Normal Mode.Shared Directory NumberA DN (extension) that is shared by two or more persons.Special Prefix code (SPRE)Special codes entered using the dialpad, followed by a two-digitaccess code, that enable features (for example, Call Forward AllCalls requires entry of SPRE code + 74).Soft keys (self-labeled)A set of keys programmed by your system administrator. Thesefour keys, located directly below the display area, have fourprogrammable layers. These keys are also used to configureparameters in the Telephone Options menu.
