Instruction manual

Glossary
dedicated
feature buttons
delay-dial-start
tie trunk
DFT
DHG
dial access
Dialed Number
Identification
Service
dial-out code
DID
DID trunk
digital
Digital
The imprinted feature buttons on a telephone: Conf or
Conference, Drop, Feature, HFAI (Hands Free Answer on
Intercom), Hold, Message, Mute or Microphone, Recall,
Speaker or Speakerphone, and Transfer.
A type of 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.
(Direct facility termination) See Personal Line.
(Data hunt group) A 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.
See feature code.
See DNIS.
A code (usually a 9) dialed by telephone users to get an
outside line.
(Direct Inward Dialing) A service that transmits the called
extension to the communications system from the telephone
company central office and routes incoming calls directly to
the called extension, Calling Group, or outgoing trunk pool,
bypassing the system operator.
An incoming trunk that receives dialed digits from the local
exchange, allowing the communications system to connect
directly to an extension without assistance from the system
operator.
The representation of information in discrete elements such
as off and on or 0 and 1. See also analog transmission.
See DCP.
Communications
Protocol
Digital Signal 0 See DS0.
Digital Signal 1 See DS1.
digital switch
See DSE.
element
digital
A mode of transmission in which the information to be
transmission
transmitted is first converted to digital form and then
transmitted as a serial stream of pulses. See also analog
transmission.
GL-8 Glossary