AT&T System 25 - Manual (Page 78)

call waiting
callback
conferencing
confirmation
tone
coverage
DDC
DGC
DSS
DXS buttons
data call (from
telephone)
dequeueing tone
exclusion
extending calls
a telephone feature that notifies you of an
incoming call while on another call.
feature that allows you to request the use of
a busy extension or line. The system will
signal your telephone when the telephone
or line is available.
feature that allows you to have up to five
parties on a call.
three short tones indicating that an
action was accepted.
feature that allows individuals to have their
calls answered by someone else.
(Data Dial Code) extension number
assigned to a data terminal.
(Direct Group Calling) a group of
telephones where incoming calls are
distributed among the group members.
(Direct Station Selection) button containing
an extension number or an access code, and
programmed by the System Administrator.
(FLEX DSS are buttons that you can
program.)
(Direct Extension Selector buttons) small
buttons on the selector console that are
used for sending a call to a specific
extension.
feature that allows you to place a data
call from your telephone, then transfer the
call to your data terminal.
three short tones indicating the Callback
feature can now be completed.
feature that allows you to keep others from
listening in on a conversation.
procedure followed by the attendant when
sending a call to the desired party.
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