Nortel IP Phone 2004 User Manual page 44

Terms you should know
Off-hook
Any line selected to make a call or receive an incoming call.
The term off-hook is applied whether (a) the end-user lifts up the
handset, (b) the end-user presses a line key, (c) the call is
automatically answered at the set, or (d) a line is automatically
selected for an outgoing call.
Outbox/Shift key
A fixed key used to switch between 2 feature key pages to
provide access to an additional 6 lines/features and an additional
24 lines on the Nortel IP Phone KEM.
Primary Directory Number
The main extension number on your telephone.
Programmable line (DN)/feature keys (self-labeled)
The six keys located at the sides of the upper area of the display.
Quit key
A fixed key on your telephone that is used to exit applications.
Ringback/ring tone
A sound indicating that a call you have made is ringing at its
destination.
Services key
A fixed key used to access options such as Telephone Options,
Password Admin, Display Network Diagnostics Utilities, Virtual
Office Login, Virtual Office Logout, Test Local Mode, and Resume
Normal Mode.
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