Lucent Technologies 6.1 manual Dce, Dcp, Dft, Dhg

MERLIN LEGENDCommunications System Release 6.1		Issue 1
System Planning 555-661-112	August 1998
Glossary
	Page GL-9
data	See DCE.
communications
equipment
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	See DTE and data terminal.
equipment
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	The imprinted feature buttons on a telephone: Conf or
buttons	Conference, Drop, Feature, HFAI (Hands Free Answer on
	Intercom), Hold, Message, Mute or Microphone, Recall,
	Speakerphone or Spkrphone, and Transfer.
delay-start tie	Tie trunk or tandem tie trunk on which the originating end of
trunk	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	A system application that allows face-to-face,
videoconferencing	simultaneous video and voice communications between
system	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.