Nortel i2002, Руководство пользователя

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Terms you should know
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An option allowing access to the multiple layers of the
Soft keys. These keys are the four keys located directly
below the display area.
Off-hook
Any line that is selected to either make a call or receive
an incoming call. The term off-hook is applied,
regardless of whether the end-user actually lifts up the
handset, or presses a line key, or is automatically
answered at the set, or a line is automatically selected
for an outgoing call.
Paging tone
A special tone heard when using the Radio Paging
feature. You hear two beeps followed by dial tone.
Primary Directory Number
The main extension number on your telephone. It is
referred to by the Primary Directory Number (PDN)
key.
Private Line
A feature that can be assigned to your telephone. With
this line, you can reach an outside number without
dialing a code to access an outside line. Internal
extensions cannot be dialed from a private line.
Programmable Line (DN)
/Feature Keys (self-labeled)
The four keys located at the sides of the upper area of
the display.
Quit key
A Fixed key on the i2002 telephone that is used to exit
applications.
Ringback/ring tone
A sound indicating that a call you have made is ringing
at its destination.