AT&T SYSTEM 25 User Manual page 96

HFAI
hold
idle line
preference
inside call
leave word
calling
loop
loop button
message waiting
night service
off-hook
on-hook
92
(Hands-Free Answer on Intercom) feature
that provides automatic answering of
internal calls; name of a multiline voice
terminal that provides the HFAI feature.
feature that temporarily suspends a call.
feature that allows a voice terminal to
automatically select a preassigned button
when you lift the handset to place 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, you
must have a VOICE POWER Voice Message
System connected to your System 25.
voice link that carries all incoming and
outgoing calls between the console and
placing calls.
location of a loop at the console; used for
answering and placing calls.
feature that allows you to turn on and off
the message light on voice terminals in the
system. (See also attendant message waiting
and station message waiting.)
feature that allows you to direct incoming
calls either to a bell or to preassigned voice
terminals when you leave for the night.
a voice terminal is off-hook when either the
handset has been removed from its cradle
(releasing the switchhook button) or the
speaker/speakerphone is turned on.
a voice terminal is on-hook when the
handset is in its cradle (depressing
the switchhook button) and the
speaker/speakerphone is turned off.