Filter
Top Products
MERLIN LEGEND Communications System Release 6.0
System Programming
555-660-111
Issue 1
February 1998
Glossary
Page GL-9
data
communications
equipment
See
DCE
.
data module A type of
ISDN terminal adapter
that acts as the
DCE
at a
data workstation
that communicates over high-speed
digital
facilities.
data rate See
bps
.
data station Special type of extension where data communications take
place; includes
DTE
and
DCE
; sometimes a telephone is
also part of a data station.
data terminal An input/output device (often a personal computer) that can
be connected to the control unit via an interface.
data terminal
equipment
See
DTE
and
data terminal
.
data workstation Special type of extension where data communications take
place; includes
DTE
and
DCE
; sometimes a telephone is
also part of a data workstation.
DCE (data communications equipment) Equipment such as
modems
or ISDN terminal adapters used to establish,
maintain, and terminate a connection between the system
and data terminal equipment (
DTE
), such as printers,
personal computers, host computers, or network
workstations.
DCP (Digital Communications Protocol) AT&T proprietary
protocol to transmit digitized voice and data over the same
communications link.
D-channel (Data-channel) 16- or 64-kbps channel that carries
signaling information or data on a
PRI
or
BRI
.
dedicated feature
buttons
The imprinted feature buttons on a telephone: Conf or
Conference, Drop, Feature, HFAI (Hands Free Answer on
Intercom), Hold, Message, Mute or Microphone, Recall,
Speakerphone or Spkrphone, and Transfer.
delay-start tie
trunk
Tie trunk
or
tandem tie trunk
on which the originating end of
the tie trunk transmits an off-hook signal to the receiving
end and waits for the receiving end to send an off-hook
signal followed by an on-hook signal. Also called “dial-
repeating tie trunk.”
desktop
videoconferencing
system
A system application that allows face-to-face,
simultaneous video and voice communications between
individuals and requires high-speed
data transmission
facilities. See also
group videoconferencing system.
DFT (direct facility termination) See
personal line
.
DHG (data hunt group) Group of analog or digital
data stations
that share a common access code. Calls are connected in
a round-robin fashion to the first available data station in
the group.
dial access See
feature code
.