AT&T SYSTEM 25 User Manual page 36

fast busy tone
(reorder tone)
feature access
code
fixed feature
following/
forwarding
FPDC
hold
inside calI
leave word
calling
message waiting
night service
off-hook
on-hook
32
repeating on/off tone indicating that the
dialed number or access code was busy,
restricted, or misdialed, or the trunk group
was busy.
sequence of characters (digits, "*", or " # ")
that allows you to access System 25 features.
standard feature that is available to every
voice terminal.
features that allow you to redirect your
incoming calls to another voice terminal.
(Floating Personal Dial Code) an extension
number associated with a person, but not a
particular voice terminal. FPDCs provide the
convenience of receiving calls at an available
voice terminal.
feature that temporarily suspends a call.
call between two or more System 25 voice
terminals. It is signaled by one long ring.
feature that allows you to notify a person at a
busy or unanswered voice terminal that you
have called. To use this feature, there must
be a VOICE POWER Voice Message System
connected to your System 25.
feature that allows you to turn on and off the
message light on voice terminals in the system.
feature that allows you to answer calls when
the Attendant is not available.
a voice terminal is off-hook when the handset
has been removed from its cradle, releasing
the switchhook button(s).
a voice terminal is on-hook when the handset
is in its cradle, depressing the switchhook
button(s).