Glossary, Acronyms, and Abbreviations - IIUSA

DDM - digital data modem
DDMS - defense debt management system
DDN - Defense Data Network
DDO - directorate of operations (CIA)
DDRS - defense data repository system
DDS - data distribution system
DDS - defense dissemination system
DDS - direct digital synthesizer
DDS - distributed denial of service (attack)
DDS - digital data service
DDS - display directory status
DDS - (Dataphone Digital Service) - 1. A private line service offered
by AT&T to transmit data that uses digital signal formats. It is
available at rates of 4.8, 9.6, and 56 kbps. DS0A and DS0B are
two types of DDS. 2. Digital Data System- See Dedicated Digital
Service.
DDST - Downsized Deployable Satellite Terminal
DDW - digital data warfare
DE - data element
DE - directed energy
DE - data entry
DE - delay equalizer
DEA - Data Exchange Annex
DEA - Drug Enforcement Administration
DECCO - defense commercial communications office (DISA)
DECM - defensive electronic countermeasures
Decoder - Any device that modifies transmitted information to a form
that can be understood by the receiver.
Decoding - In Pulse Code Modulation (PCM) voice equipment, a
process in which a set of quantized values is generated from the
digital representation of a sample.
DECT - digital European cordless telephony (Europe standard)
DED - data element dictionary
DED - data encryption device
Dedicated - Circuit - A permanent channel between two locations.
As opposed to a Switched Circuit
Dedicated - Digital Service - A "Hardwired" or "Nailed Up" digital
circuit which is permanently connected between 2 points.
Typically 56Kbps or 64Kbps. Dedicated digital lines are frequently
cheaper than ISDN for full time service. Also called Digital Data
System, or DDS.
DEFCON - defense condition
DEFI - data entry file inquiry
DEIS - defense enterprise integration services (DISA)
DEK - data encryption key
Delay, - Propagation - The time required for a signal to travel from
one point to another in a component, circuit or system.
DEMARC - demarcation
DEMOD - demodulator
Demodulation - The process of extracting transmitted information
from a carrier signal.
DeMS - deployment management system (USAF)
Demand - Assigned - A feature that is unique to the node that
DFO - Disaster Field Office
continually optimizes network bandwidth resources. Network
resources including bandwidth, are allocated only to active calls.
DFS - distributed file system
The node monitors signaling from each attached voice or data
device, and determines when service is required; only then is
DFT - design for test
bandwidth allocated. Because bandwidth is not wasted on
DFT - diagnostic function test
inactive ports, the efficiency of transmission facilities is greatly
increased, while rerouting performance is optimized by
reconnecting only the active calls.
DFT - discrete Fourier transform
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Demultiplexed - Loopback - Loopback of a DS0B subrate channel.
Demultiplexor - A circuit that distributes an input signal to a selected
output line (with more than one output line available).
DEMUX - demultiplex
DENIS - defense environmental network information exchange
DENS - directed energy neutralization system
DEPMEDS - deployable medical systems development system
DEQPSK - differentially encoded quadrature phase shift keying
DES - data (digital) encryption standard
DES - data entry sheet
DES - downsized extension switch
DES - dismounted extension switch
DES - Digital Encryption Standard
desig - designator
DET - data entry terminal
DET - device execute trigger
DET - deterministic
DET - Detachment
DEUCE - downsized end user computer equipment
DEVA - document-enabled virtual applications
Device - ID - A term used to indicate objects in a node such as the
node, links, card, and so on.
Device - SPF shortest path first
DEW - Directed Energy Warfare
DF - data field
DF - destination field
DF - device flag
DF - direction finding
DF - don't fragment flag, IP header
DFAD - digital feature attribute (analysis) data
DFAR - defense federal acquisition regulation
DFC - data flow control
DFD - data flow diagrams
DFG - domain FORTEZZA gateway
DFHSM - data facility hierarchical storage manager
DFI - data field identifier
DFL - data file line
DFM - design for manufacturing