AT&T SYSTEM 25 User Manual page 72

caIl waiting
camp-cm
cancel
conferencing
confirmation
tone
coverage
data call (from
voice terminal)
DDC
dequeuing tone
DGC group
DSS
6 8
feature that identifies itself by a special
ringback tone when you dial the PDC of a
busy party.
feature that allows you to extend a call to a
busy terminal and then release yourself
from the call. When the extended-to voice
terminal becomes free, the call will ring 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 you to have your 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) group of voice
terminals to which incoming calls are
distributed among the group members.
(Direct Station Selection) feature like
Automatic Intercom except that the person
receiving the call does not need a separate
button. The call comes in on a System
Access button, Fixed DSS buttons are
programmed by the System Administrator
while you can program Flexible DSS
buttons.