AT&T SYSTEM 25 User Manual page 74

Glossary (Contd)
confirmation
tone
data call
DDC
DGC
DSS
DXS buttons
70
three short tones that indicate an action
was accepted and you can proceed to the
next step.
feature that allows you to place a data
call from your console and then transfer
the call to your data terminal.
(data dial code) extension number assigned
to a data terminal.
see Incoming Calls Group.
(direct station selection) feature like
automatic intercom except that the person
receiving the call does not need a separate
button. Fixed DSS buttons are
programmed by the System Administrator
while you can program flexible DSS
buttons.
(direct extension selector buttons) the
(smaller) buttons on the Selector Console
that are used to direct the call to a
specific PDC.
Continued