AT&T SYSTEM 25 User Manual page 94

call
accountability
callback request
call waiting
camp-on
cancel
conferencing
confirmation
tone
coverage
data call (from
voice terminal)
DDC
dequeuing tone
DGC
90
feature that allows you to make calls at
another voice terminal and charge them to
your PDC.
feature that allows you to request the use of
a busy station or trunk. The system will
signal your voice terminal when the station
or trunk is available. This feature is also
referred to as Callback Queuing.
a voice terminal feature that allows parties
to be notified of an incoming call while on
another call.
feature that allows you to extend a call to
a busy voice terminal and then release
yourself from the call. When the extended-
to voice terminal is free, the call rings at it.
feature that allows you to return to the
caller when the called party does not
answer.
feature that allows you to have up to five
parties on a call.
three short tones indicating that an
action was accepted and you can proceed.
feature that allows an individual to have
their calls answered by someone else.
feature that allows you to place a data
call from your voice terminal and then
transfer the call to your data terminal.
(Data Dial Code) extension number
assigned to a data terminal.
three short tones indicating that the call you
had queued, using the Callback Request
-feature, can now be completed.
(Direct Group Calling) a group of voice
terminals to which incoming calls are
distributed among the group members.