AT&T System 25 - Manual (Page 71)

off-hook
on-hook
outside call
outside line
PDC
paging feature
park
personal message
waiting
pickup
prime line
preference
queue
queueing tone
either the handset has been removed from
its cradle or the speaker/speakerphone is
turned on.
the handset is in its cradle and the
speaker/speakerphone is turned off.
call between a System 25 telephone and a
telephone not connected to the System 25.
Outside calls are made over Central Office
or other lines and are signalled by two short
rings.
a line to the Central Office or other system.
Outside lines may be accessed by pressing
special buttons or by dialing an access code.
(Personal Dial Code) extension number that
is assigned to an individual and is usually
associated with the telephone at the
individual’s desk. (See also FPDC.)
allows you to access paging equipment from
System 25 telephones.
a feature similar to hold, except that it
allows you to answer the call from any
telephone in the system.
feature that allows you to turn on and off
a light at another person’s telephone to
notify them of a message.
feature that allows you to answer a call that
is ringing at another telephone.
feature that allows the telephone to select
a button automatically when you lift the
handset to place a call.
a place where calls are held until they can
be acted upon (such as a request for
Callback).
five short tones indicating that your request
for a Callback is confirmed.
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