A
-------------------------------------------------------------------------------
AA : Application Association
AAL : ATM Adaptation Layer
ABM : Asynchronous Balanced Mode
ABR : Area Border Router
ABR : Available Bit Rate
ABT : ATM Block Transfer
AC : Alternating Current
AC : Application Context
ACCPR : Adjacent Channel Coupled Power Ratio
ACD : Automatic Call Distribution
ACF : Access Control Field
ACF : Advanced Communications Facility
ACIPR : Adjacent Channel Interface Power Ratio
ACK : ACKnowledgement
ACL : Advanced CMOS Logic
ACM : Address Complete Message
ACR : Allowed Cell Rate
AD : Analog-to-Digital
ADM : Add/Drop Multiplexers
ADPCM : Adaptive Differential Pulse Code Modulation
ADSL : Asymmetric Digital Subscriber Line
ADSL : Asymmetric Digital Subscriber Loop
AE : Application Entity
AES : Advanced Encryption Standard
AF : Assured Forwarding
AF : Audio Frequency
AFC : Automatic Frequency Control
AFNOR : Association Francaise de normalisation
AFR : Active Feedback Resonator
AGC : Automatic Gain Control
AI : Artificial Intelligence
AIM : ATM Inverse Multiplexer
AIN : Advanced Intelligent Network
AIR : Additive Increase Rate
AIS : Alarm Indication Signal
AIS-E : Alarm Indication Signal-External
ALC : Automatic Level Control
ALU : Arithmetic Logic Unit
ALS : Application Layer Structure
AM : Amplitude Modulation
AMA : Automatic Message Accounting
AMI : Alternate Mark Inversion
AMPS : Advanced Mobile Phone Service
AMR : Automatic Meter Reading
ANI : Automatic Number Identification
ANM : Answer Message
ANS : American National Standard
ANS : Advanced Networks and Services
ANSI : American National Standards Institute
AO/DI : Always On/Dynamic ISDN
AOW : Asia-Oceania Workshop
AP : Application Process
APAN : Asia Pacific Advanced Network
APB : Available Path Bandwidth
API : Application Programming Interface
APON : ATM Passive Optical Network
APPL : Analog PLL
APPN : Advanced Peer to Peer Network
ARC : Administrative Radio Conference
ARE : All Routes Explorer
ARIS : Aggregate Route-based IP Swithcing
ARM : Application Resource Manager
ARP : Address Resolution Protocol
ARPA : Advanced Research Projects Agency
ARQ : Automatic Repeat reQuest
ARS : Audio Respone System
APE : Application Protocol Entity
AS : Autonomous System
ASAP : Application Service Access Point
ASBR : Autonomous System Boundary Router
ASC : AIN Switch Capabilities
ASCII : American Standard Code for Information Interchange
ASE : Application Service Element
ASIC : Application Specific Integrated Circuit
ASK : Amplitude Shift Keying
ASN : Abstract Service Notation
ASN.1 : Abstract Syntax Notation.1
ASON : Automatically Switched Optical Channel Networks
ASP : Abstract Service Primitive
ASP : Application Service Provider
ASRM : Abstract System Reference MOdel
ASSP : Application Specific Standard Product
ASTN : Automatically Switched Transport Network
ATD : Asynchronous Time Division
ATM : Asynchronous Transfer Mode
ATMARP : ATM Address Resolution Protocol
ATS : Abstract Test Suite
ATSC : Advanced Television Systems Committee
AU : Access Unit
AUI : Attachment Unit Interface
AUP : Acceptable Use Policy
AUU : ATM User-to-User
AV : Audio Visual
AVC : Automatic Volume Control
AWC : Automatic Answer Circuit
AWGN : Additive White Gaussian Noise
-------------------------------------------------------------------------------
B
--------------------------------------------------------------------------------
B2B : Business to Business
BA : Branch Amplifier
BAAP : Buenos Aires Action Plan
BASIC : Beginner's All-purpose Symbolic Instruction Code
BBC : broadband Bearer Capability
BBS : Bulletin Board Service
BBS : Bulletin Board System
BC : Bearer Capability
BCBDS : Broadband Connectionless Data Bearer Service
BCD : Binary Coded Decimal
BCDMA : Broad Band CDMA
B-Channel : Bearer Channel
BCOB : Broadband Class of Bearer
BCS : British Computer Society
BCP : Business Continuity Planning
BCU : Broadcast Control Unit
BECN : Backward Explicit Congestion Notification
BER : Bit Error Rate
BETRS : Basic Exchange Telecommunication Radio Service
BEV : Billion Electron Volts
BGP : Border Gateway Protocol
BGT : Broadcast and Group Translators
B-ICI : Broadband Inter Carrier Interface
B-ICI SAAL : B-ICI Signaling ATM Adaptation Layer
BIND : Berkeley Internet Name Domain
BIOS : Basic Input Output System
BIP : Bit Interleaved Parity
B-ISDN : Broadband Integrated Services Digital Network
BISSI : Broadband Inter Switching System Interface
B-ISUP : Broadband ISDN User's Part
BISYNC : BInary SYNchronous Communication
B-LLI : Broadband Low layer Information
BMA : Broadcast Multiple Access
BN : Bridge Number
BNC : Baby N Connector
B-NT : Broadband Network Termination
BOF : Birds of Feather
BOM : Beginning of Message
BOOTP : Bootstrap Protocol
BPDU : Bridge Protocol Data Unit
BPF : Bandpass Filter
BPI : Bits Per Inch
BPML : Business Process Modeling Language
BPP : Bridge port Pair
BPS : Bits per Second
BPSK : Binary Phase Shift Keying
BPSS : Business Process Specification Scheme
BRA : Basic Rate Access
BRI : Basic Rate Interface
BSC : Binary Synchronous Communication
BSD UNIX : Berkeley Software Distribution UNIX
BSP : Business Service Provider
BSVC : broadcast switched Virtual Connections
BT : British Telecom
BTAG : Begin Tag
B-TE : broadband Terminal equipment
BTS : Base Transceiver Station
BUS : Broadcast and Unknown Server
BW : Bandwidth
BWS : Broadcasting WebSite
--------------------------------------------------------------------------------
C
--------------------------------------------------------------------------------
C/N : Carrier to Noise Ratio
CA : Cell Arrival
CAC : Call Admission Control
CAC : Connection Admission Control
CAD/CAM : Computer Assisted Design/ Manufacturing
CADN : Cellular Acccess Digital Network
CAE : Computer Aided Engineering
CAI : Computer Aided Instruction
CAI : Common Air Interference
CALS : Continuous Acquisition and Life-cycle Support
CAM : Computer Aided Manufacturing
CANARIE : Canadian Network for Advancement of Research, Industry and education
CAP : Carrierless Amplitude Phase
CAS : Channel Associated Signaling
CASE : Common Application Software Element
CASE : Computer Aided Systems Engineering
CAT : Computer Aided Translation
CATV : Community Antenna TeleVision (alias Cable Television)
CAV : Constant Angular Velocity
CBD : Component Based Development
CBDS : Connectionless Broadband Data Services
CBQ : Class Based Queuing
CBR : Constant Bit Rate
CBT : Computer Based Training
CBT : Core Based Tree
CC : Continuity Cell
CC : Condition Code
CC : Connection Confirm
CCB : Configuration Control Board
CCD : Charge Coupled Device
CCI : Common Client Interface
CCIRN : Coordinating Committee for Intercontinental Research Networking
CCITT : International Telegraph and Telephone Consultative Committee
CCP : Channel Change Protocol
CCR : Current Cell Rate
CCR : Configuration Change Request
CC-RA : Common Criteria Recognition Arrangement
CCS :Ccommon Channel Signaling
CCSS7 : Common Channel Signaling System 7
CCTV : Closed Circuit TeleVision
CD : Compact Disc
CD-A : Compact Disc Audio
CDDI : Copper Distributed Data Interface
CD-I : Compact Disc Interactive
CDMA : Code Division Multiple Access
CDPD : Cellular Digital Packet Data
CD-R : Compact Disc-Recordable
CD-ROM : Compact Disk-Read-Only Memory
CDS : Cell Directory Service
CDSL : Consumer Digital Subscriber Line
CDT : Cell Delay Tolerance
CDV : Cell Delay Variation
CDVT : Cell Delay Variation Tolerance
CEI : Connection Endpoint Identifier
CEN : Comite Europeene de Normalisation
CENELEC : European Committee for Electrotechnical Standardization
CEO : Chief Executive Officer
CER : Cell Error Ratio
CER : Circuit Emulation Service
CES : Circuit Emulation Service
CEF : Call for Proposals
CG : Computer Graphics
CGA : Color Graphics Adapter
CGI : Computer Graphics Interface
CGI : Common Gateway Interface
CGM : Computer Graphics Metafile
CHAP : Challenge Handshake Authentication Protocol
CI : Congestion Indicator
CIB : CRC Indication Bit
CIBER : Cellular Intercarrier Billing Exchange Record
CIC : Carrier Identification Code
CIDR : Classless Inter Domain Routing
CIE : NHRP Client Information Element
CIP : Carrier Idenfication Parameter
CLP : Classical IP over ATM
CIR : Committed Information Rate
CISC : Complex Instruction-Set Computer
CL : Connectionless
CL : Current Loop
CLAD : Cell Assembly And Disassembly
CLNAP : Connectionless Network Access Ptotocol
CLNP : Connectionless Network Protocol
CLNP : Connectionless Network Protocol
CLNS : Connectionless Network Service
CLP : Cell Loss Priority
CLR : Cell Loss Ratio
CLS : Connectionless Server
CLSF : Connectionless Service Function
CLTP : ConnectionLess Transport Protocol
CLV : Constant Linear Velocity
CMC : Cellular Mobile Carrier
CME : Component Management Entity
CMI : Coded Mark Inversion
CMIP : Common Management Information Protocol
CMIS : Common Management Information Service
CMISE : Common Management Information Service Element
CMM : Capability Maturity Model
CMOS RAM : Complementary Metal-Oxide Semiconductor Random Access Memory
CMOT : Common Management information protocol Over TCP/IP
CMR : Cell Misinsertion Rate
CN : Copy Network
CNM : Customer Network Management
CNS : Car Navigation System
CO : Central Office
CO : Connection Oriented
COD : Connection Oriented Data
CODEC : Coder/Decoder
COM : Continuation of Message
COBOL : Common Business Oriented Language
COBRA : Common Object Request Broker Architecture
CoS : Class of Service or Classes of Services
COS : Corperation for Open Systems International
COSINE : Cooperation for Open Systems Interconnection Networking in Europe
CP : Connection Processor
CP : Control Plane
CPCS : Common Part Convergence Sublayer
CPE : Customer Premises Equipment
CPFSK : Continuous Phase frequency Shift Keying
CPI : Common Part Indicator
CPN : Calling Party Number
CPN : Customer Premises Network
CPS : Content Provider System
CPU : Central Processing Unit
CQM : Channel Quality Measurement
Crankback IE : Crankback-Information Element
CRC : Cyclic Redundancy Check
CRC : Cyclic Redundancy Code
CRCG : Common Routing Connection Group
CR-LDP : Constraint-based Routing LDP
CRM : Customer Relationship Management
CRT : Cathode Ray Tube
CS : Convergence Sublayer
CS : Carrier Selection
CS1 : Capability Set One
CS2 : Capability Set Two
CSA : Carrier Serving Area
CSI : Convergence Sublayer Indication
CSMA/CD : Carrier Sence Multiple Access with Collision Detection
CSP : Computer Service Provider
CSPDN : Circuit Switched Public Data Network
CSPF : Constraint-based Shortest Path First
CSR : Cell Missequenced Ratio
CSR : Cell Switch Router
CSU : Channel Service Unit
CT : Cordless Telephone
CT2 : Cordless Telephone 2
CTD : Cell Transfer Delay
CTI : Computer Telephony Integration
CTIA : Cellular Telecommunication Industry Association
CTP : Connection Termination Point
CTR : Common Technical Regulations
CTS : Conformance Testing Service
CTV : Cell Tolerance Variation
CUG : Closed Users Group
CUI : character User Interface
CVSM : Continuously Variable Slope Delta Modulation
CV : Constant Voltage
CW : Continuous Wave
--------------------------------------------------------------------------------
D
--------------------------------------------------------------------------------
DA : Destination MAC address
DA : Destination Address
D/A : Digital to Analog
DAB : Digital Audio Broadcasting
DAC : Digital-Analog Converter
DAMPS : Digital AMPS
DAL : Data Access Line
DANTE : Delivery of Advanced Netwrok Technology to Europe
DAP : Directory Access Protocol
DARC : Data Radio Channel
DARPA : Defence Advanced Research Projects Agency
DAS : Direct Attached Storage
DAT : Digital Audio Tape
DAVIC : Digital Audio Visual Council
dB : Decibel
dBc : Decibel below carrier
DBMS : Data Base Management System
dBm : Decibel(relative to 1mW)
DBM : Direct Balanced Mixer
DBR : Deterministic Bit Rate
DBR : Data Burst Randmizer
DBR : Deterministic Bit Rate
DBS : Direct Broadcast Satellites
DBR : Deterministic Bit Rate
dBW : Decibel(relative to 1 Watt)
DC : Device Control
DC : Direct Current
DCC : Data Country Code
DCC : Digital Color Code
DCE : Data Communication Equipment
D-Channel : Data Channel
DCS : Digital Cellular System
DCT : Discrete Cosine Tranform
DD : Depacketization Delay
DDCMP : Digital Data Communication Message Protocol
DDD : Direct Distance Dialing
DDN : Defence Data Network
DDS : Dataphone Digital Services
DE : Discard Eligible
DECT : Digital Enhanced Cordless Technologies
DECT : Digital European Cordless Telephone
DES : Data Encryption Standard
DES : Destination End System
DFS : Distributed File Service
DFT : Discrete Fourier Transform
DHCP : Dynamic Host Configuration Protocol
DIC : Digital Interface Card
DIMM : Dual Inline Memory Module
DIN : Deutsches Institute for Normung
DOI : Digital Object Identifier
DIP : Dual Inline Package
DIS : Draft International Standard
DiffServ : Differentiated Service
DLC : Data Link Control
DLC : Digital Loop Carrier
DLCI : Data Link Connection Identifier
DLL : Data Link Layer
DLSw : Data Link Switching
DMA : Direct Memory Address
DMDD : Distributed Multiplexing Distributed Demultipexing
DMM : Digital Multi Meter
DMT : Discrete Multi-Tone
DN : Distribution Network
DNS : Domain Name System
DOI : Digital Object Identifier
DOCSIS : Data Over Cable Service Interface Specification
DOS : Disk Operating System
DP : Dial Pulse
DP : Data Processing
DPLL : Digital PLL
DPSK : Differential Phase Shift Keying
DQDB : Dual Queue Dual Bus (IEEE 80.6 Metropolitan Area Network protocol)
DQPSK : Differentially encoded Quadrature Phase Shift Keying
DR : Digit receiver
DR : Dynamic Range
DRAM : Dynamic Random Access Memory
DREN : Defence Research and Engineering Network
DRM : Digital Rights Management
DS : Differentiated Service
DS0 : Digital Signal Level 0
DS1 : Digital Siganal Level 1
DS3 : Digital Signal Level 3
DS : Direct Sequence
DSA : Differentiated Service Architecture
DSBM : Designated Subnet Bandwidth Manager
DSE: Distributed Single Layer Embedded Test Method
DSID : Destination Signaling Identifier
DSL : Digital Subscriber Line
DSL : Digital Subscriber Loop
DSLAM : Digital Subscriber Line Access Multiplexer
DSMA/CD : Digital Sense Multiple Access with Collision Detect
DSM-CC : Digital Storage Media-Control Commands
DSO : Document Services Office
DSP : Digital Signal Processing
DSR : Distributed Speech Recognition
DSRM : DAVIC System Reference Model
DSU : Digital Service Unit
DSVD : Digital Simultaneous Voice and Data
DTD : Document Type Definition
DTE : Data Terminal Equipment
DTMF : Dual Tone Multi Frequency
DTP : Distributed Transaction Processing
DTR : Data Terminal Ready
DTS : Distributed Time Service
DTTB : Digital Terrestrial Television Broadcasting
DVB : Digital Video Broadcast
DVD : Digital Video Disk
DVI : Digital Video Interactive
DVMRP : Distance Vector Multicast Routing Protocol
DWDM : Dense Wavelength Division Multiplexing
DWMT : Discrete Wavelet Multi-Tone
DXI : Data Exchange Interface
--------------------------------------------------------------------------------
E
--------------------------------------------------------------------------------
EACK : Extended ACKnowledgement
EAI : Enterprise Application Integration
EBCDIC : Extended Binary Coded Decimal Interchange Code
EBON : European Backbone Network
EC : European Community
ECC : Elliptic Curve Cryptosystem
ECC : Error Correcting Code
ECL : Emitter Coupled Logic
ECM : Entitlement Control Message
ECMA : European Computer Manufactures Association
ECSA : Exchange Carriers Standards Association
EDB : Enhanced Digital Broadcast
EDI : Electronic Data Interchange(전자문서 교환)
EDMS : Electronic Document Management System
EFCI : Explicit Forward Congestion Indicator
EDMS : Electronic Document Management System(전자문서 관리 시스템)
EGA : Enhanced Graphics Adapter
EGP : Exterior Gateway Protocol
EIA : Electronics Industry Association
EII : European Information Infrastructure
ELAN : Emulated LAN
ELF : Extremly Low Frequency
E-MAIL : Electronic Mail
EMC : Electromagnetic Compatibility
EMF : Electromagnetic Field
EMI : Electromagnetic Interference
EMR : Electromagnetic Radiation
EMS : Expanded Memory Specification
ENIAC : Electronic Numerical Integrater and Computer
EO : End Office
EOM : End of Message
EOT : End Of Transmission
EPD : Early Packet Discard
EPROM : Erasable Programmable Read-Only Memory
EROD : Erasable Rewritable Optical Disc
ERP : Enterprise Resource Planning
ESM : Enterprise Security Management
E-TACS : Extended Total Access Communication System
E-TDMA : Enhanced TDMA(with DSI-Digital Speech Interpolation)
ETAG : End Tag
ETE : End-to-End
ETRI : Electronics and Telecommunications Research Institute
ETSI : European Telecommunications Standards Institute
EV : Electron Volt
EWOS : European Workshop for Open System
EXM : Exit Message
--------------------------------------------------------------------------------
F
--------------------------------------------------------------------------------
FA : Forwarding Adjacency
FAQ : Frequently Asked Questions
FC : feedback Control
FCC : Federal Communications Commission
FCFS : First-Come First-Service
FCS : Fast Circuit Switching
FCS : Frame Ckeck Sequence
FDC : Floppy Disk Controller
FDD : Floppy Disk Drive
FDD : Frequency Division Duplex
FDDI : Fiber Distribution Data Interface
FDM : Frequency Division Multiplexing
FDMA : Frequency Division Multiple Access
FEBE : Far End Block Error
FEC : Forward Error Correction
FECN : Forward Explicit Congestion Notification
FEP : Front-End Processor
FER : frame Error Rate
FERF : Far End Receive Failure
FF : Flip Flop
FFOL : FDDI Follow-On LAN
FFT : Fast Fourier Transform
FH : Fiber Hub
FIFO : First In First Out
FILO : First In Last Out
FIN : FINish flag
FIPA : Foundation for Intelligent Physical Agent
FM : Frequency Modulation
FOCC : Forward Analog Control Channel
FOD : Fax On Demand
FORTRAN : FORmula TRANslation
FP : Floating Point
FPLMTS : Future Public Land Mobile Telecommunication System
FPU : Floating Point Unit
FR : Frame Relay
FRS : Frame Relay Service
FSK : Frequency Shift Keying
FTP : File Transfer Protocol
FTR : Full Text Retrieval
FTTB : Fiber To The Building
FTTC : Fiber To The Curb
FTTH : Fiber To The Home
FUNI : Frame User Network Interface
FTTO : Fiber To The Office
FVC : Forward Analog Voice Channel
FYI : For Your Information
--------------------------------------------------------------------------------
G
--------------------------------------------------------------------------------
GaAs : Gallium Arsenide
GAP : Generic Address Parameter
GATT : General Agreement on Tariffs and Trade
GBBC : GSM Baseband Codec
GCID : Global Call Identifier
GCID-IE : Global Call Identifier-Information Element
GCRA : Generic Cell Rate Algorithm
GDMO : Guidelines for Definition of Managed Objects
GDS : Global Directory Service
GFC : Generic Flow Control
GFLOPS : Billions of FLOating Point operations per Second
GFSK : gaussian frequency Shif Keying
GGP : Gateway to Gateway Protocol
GHz : Giga Hertz
GIF : Graphics Interchange Format
GII : Global Information Infrastructure
GIPS : Giga Instruction Per Second
GIS : Geographic Information System
GKS : Graphical Kernel System
GMPCS : Global Mobile Personal Communications System
GMPLS : Generalized Multi-Protocol Label Switching
GMSK : Gaussian-filtered Minimum Shift Keying
GND : GrouND
GOLD : GSM One-Chip Logic Device
GOSIP : Government Open Ssystems Interconnection Profile
GPIP : General Purpose Interface Bus
GPS : Global Positoning System
GRC : Generic Reference Configuration
GSM : Global System for Mobile Communications
GUI : Graphical User Interface
GW : Giga Watt
--------------------------------------------------------------------------------
H
--------------------------------------------------------------------------------
HAL : Hardwired Array Logic
HAN : Highly Advanced National project
HAN : Home ATM Network
HBT : Heterojucion Bipolar Transistor
HC : High speed Cmos
HCC : Host Call Control
HCI : Human Computer Interaction
HCPI : Higher Layer Protocol Identifier
HCT : High speed Cmos Ttl thresholds
HD : High density
HDB3 : High Density Bipolar 3
HDD : Hard Disk Drive
HDML : Handheld Device Markup Language
HDLC : High-level Data Link Control
HDSL : High bit rate Digital Subscriber Line
HDTP : Handheld Device Transport Protocol
HDTV : High Definition TeleVision
HDX : Half Duplex
HE : HeadEnd
HEC : Header Error Check
HEC : Header Error Control
HEL : Header Extension Length
HF : High Frequency
HFC : Hybrid Fiber Coaxial
HFR : Hybrid Fiber Radio
HFS : Hierachical File System
HGML : Hyper Graphics Markup Language
HIC : Hybrid Integrated Circuit
HIPPI : High Performance Parallel Interface
HLPI : Higher Layer Protocol Identifier
HLR : Home Location Register
HMSC : Human Machine Service Consumer
HOL : Head of Line
HPF : High Pass Filter
HPC : Hand Held PC
HSM : Hierarchical Storage Management
HSSI : High-Speed Serial Interface
HSTP : High Speed Transfer Protocol
HTML : HyperText Markup Language
HTTP : Hypertext Transfer Protocol
HW : Hardware
Hz : Hertz
--------------------------------------------------------------------------------
I
--------------------------------------------------------------------------------
IAA : Initial Address Acknowledgment
IAB : Internet Architecture Board
IAM : Initial Address Message
IANA : Internet Assigned Numbers Authority
IAR : Initial Address Reject
IBSP : Internet Business Solutions Provider
IC : Initial Cell Rate
IC : Intergrated Circuit
ICCB : Internet Control and Configuration Board
ICD : International Code Designator
ICMP : Internet Control Message Protocol
ICW : Interactive Courseware
IDB : Interactive Digital Broadcast
IDC : Internet Data Center
IDE : Intergrated Device Electronics
IDE : Intelligent Drive Electronics
IDL : interface Definition Language
IDSL : ISDN Digital Subscriber Line
IDU : Interface Data Unit
IE : Information Element
IEC : International Electrotechnical Committee
IEEE : Institute of Electrical and Electronics Engineers
IEN : Internet Engineering Notes
IESG : Internet Engineeting Steering Group
IETF : Internet Engineering Task Force
IF : Intermediate Frequency
IFF : Interfrequency Filter
IFFF : Inverse Fast Fourier Transform
IGMP : Internet Group Multicast Protocol
IGP : Interior Gateway Protocol
IIR : Infinite Impulse Response(filter)
IISP : Information Infrastructure
ILEC : Independent Local Exchange Carrier
ILMI : Interim Link Management Interface
ILMI : Interim Local Management Interface
IM : Intermodulation
IMD :Intermodulation Distortion
IME : Interface Management Entity
IMR : Intermodulation Distortion Ratio
IMT2000: International Mobile Telecommunications 2000
IMTC : International Multimedia Teleconferencing Cosortium
IN : Intelligent Network
INOC : Internet Network Operations Center
I/O : Input/Output
ION : Internetworking Over NBMA(Non-Broadcast Multi-Access)
IP : Intelligent Peripheral
IP : Internet Protocol
IP : Information Provider
IP : Intercept Point
IPCF : International Powerline Communications Forum
IPF : International Powerline Forum
IPng : Internet Protocol Next Generation
IPOA : Ip over ATM
IPv4 : Internet Protocol version 4
IPv6 : Internet Protocol version 6
I-PNNI : Integrated Private Network Network Interface
IPX : Internet Packet eXchange
IRC : Internet Relay Chat
IRTF : Internet Research Task Force
ISDB : Integrated Service Digital Broadcasting
ISDN : Integrated Services Data Network
IS-IS : Intermediate System to Intermediate System
ISM : Industrial scientific Medical(frequency band)
ISN : Information Systems Network
ISO : International Standard Organization
ISOC : Internet Society
ISP : Internet Service Provider
ISSLL : Integrated Services over Specific Link Layers
ISUP : ISDN User PART
IT : Information Technology
ITI : Internet Telephony Integration
ITS : Intelligent Traffic System
ITU-T : International Telecommunications Union - Telecommunications sector
IWF : Interworking Function
IWU : Interworking Unit
--------------------------------------------------------------------------------
J
--------------------------------------------------------------------------------
JDC : Japanese Digital Carrier
JIS : Japan Industrial Standard
JISC : Japan Industrial Standards Association
JPEG : Joint Photographic Expert Group
JSA : Japan Standards Association
JTAPI : Java Telephony Application Programmable Interface
JTC-1 : Joint Technical Committee-1
JUG : Joint Users Group
--------------------------------------------------------------------------------
K
--------------------------------------------------------------------------------
K : Kilo
KA : KiloAmpere
KBS : Korea Bureau of Standards
KBPS : KiloBits Per Second
KEV : Kilo Electron Volts
KII : Korea Information Infrastructure
KMS : Knowledge Management System
KOD : Karaoke on Demand
KORNET : KORea backbone NETwork for Internet Connectivity
KREONet : Korea Research Environment Open Network
KREN : Korea Education Network
KT : Korea Telecom
KTS : Key Telephone System
KVA : Kilo Volt Amperes
KWH : Kilo Watt Hours
--------------------------------------------------------------------------------
L
--------------------------------------------------------------------------------
L2TP : Layer 2 Tunneling Protocol
LAN : Local Area Network
LANE : LAN Emulation
LAPB : Link Access Procedure Balanced
LAPD : Link Access Procedure on D channel
LAT : Local-Area Transport
LATA : Local Access and Transport Area
LB : Leaky Bucket
LCD : Liquid Crystal Display
LCM : Long Code Mask
LD : LAN Destination
LDAP : Lightweight Directory Access Protocol
LD-CELP : Low Delay Code Exited Linear Prediction
LDP : Label Distribution Protocol
LE : LAN Emulation
LE-ARP : LAN Emulation Address Resolution Protocol
LEC : Local Exchange Carrier
LEC : LAN Emulation Client
LECID : LAN Emulation Client Identifier
LECS : LAN Emulation Configuration Server
LED : Light Emitting Diode
LEO : Low Earth Orbit
LES : LAN Emulation Server
LF : Loop Filter
LF : Low Frequency
LFSR : Linear Feedback Shift Register
LIFO : Last In First Out
LIJP : Leaf Initiated Joint Parameters
LIS : Logical IP Subnetwork
LIV : Link Integrity Verification
LLATMI : Lower Layer ATM Interface
LLC : Logical Link Control
LLC/SNAP : Logical Link Control/Subnetwork Access Protocol
LMCS : Local Multipoint Communication Service
LMDS : Local Multipoint Distribution Service
LMDS : Local Multipoint Distribution System
LMI : Layer Management Interface
LMP : Link Management Protocol
LNA : Local Numbering Area
LOC : Loss of Cell delineation
LOF : Loss of Frame
LOS : Line Of Sight
LOS : Loss of Signal
LP : Low Pass
LPC : Linear Predictive Coding
LPC : Line Per Channel
LPF : Low Pass Filter
LPLL : Linear PLL
LSA : Link State Advertisement
LSB : Least Significant Bit
LSD : Least Significant Digit
LSI : Large-Scale Integrated Circuit
LSP : Label Switched Path
LSP : Line Spectral Pair
LSR : Label Switching Router
LSR : Leaf Setup Request
LT : Lower Tester
LTE : Line Terminating Equipment
LTH : Length Field
LTV : Life Time Value
LW : Long Wave
--------------------------------------------------------------------------------
M
--------------------------------------------------------------------------------
M2M : Marketplace to Marketplace
MA : Maintenance and Adaptation
MAC : Medium Access Control
MAC : Mobile Attenuation Code
MAHO : Mobile Assisted Handoff
MAN : Metropolitan Area Network
MANET : Mobile Ad-hoc Network
MARS : Multicast Address Resolution Server
MB : MegaBytes
MBONE : Multicast backBONE
MBPS : Million Bytes Per Second
MBS : Maximum Burst Size
MBS : Mobile Broadband Service
MC : Motion Compensation
MCA : Multi Channel Access
MCIS : Microsoft Commertial Internet System
MCNS : Multimedia Cable Network System
MCR : Minimum Cell Rate
MCS : Multicast Server
MCTD : Mean Cell Transfer Delay
MCU : Master Control Unit
MDSB : Mobile Data Base Station
MDSL : Multi-rate Digital Subscriber Line
ME : Mapping Entity
MESFET : Metal Schottky FET
MFSK : Multi Frequency Shift Keying
MGCP : Media Gateway Control Protocol
MHEG : Multimedia/Hypermedia information coding Expert Group
MHP : Multimedia Home Platform
MHS : Message Handling System
MIB : Management Information Base
MID : Message Identifier
MIDI : Multiple Instrument Digital Interface
MIDI : Music Instrument Digital Interface
MILNET : MILitary NETwork
MIME : Muti-purpose Internet Mail Extensions
MIN : Mobile Identification Number
MIN : Multistage Interconnection Networks
MIPS : Millions of Instruments Per Second
MISP : Mobile Internet Service Provider
MIR : Maximum Information rate
MLPPP : MultiLink Point-to-Point Protocol
MMDS : Multichannel Multipoint Distribution Service
MMDS : Multichannel Multipoint Distribution System
MMF : Multimode Fiber
MMIC : Monolithic Microwave IC
MMU : Memory Management Unit
MMX : Multi-Media Extension
MOD : Movies on Demand
MOD : Music on Demand
MODEM : MOdulator and DEModulator
MOM : Message Oriented Middleware
MOS : Metal Oxide Semiconductor FET
MOSFET : Metal Oxide Semiconductor FET
MOSPF : Multicast extensions to OSPF
MPC : Multimedia Personal Computer
MPC : MPOA Client
MPEG : Moving Picture Experts Group
MPEG-TS : MPEG-Transport Stream
MPLS : Multi-Protocol Label Switching
MPOA : MultiProtocol Over ATM
MPS : MPOA Server
MPU : Maximum Transmission Unit
MPU : Micro Processing Unit
MPU : Main Processing Unit
MRCS : Multi-rate Circuit Switching
MRO : Maintenance Repair and Operating
MRP : Material Resource Planning
MS : Meta signaling
MS : Mobile Sation
MSA : Metropolitan Service Area
MSAP : Management Service Access Point
MSB : Most Significant Bit
MSC : Mobile Switching Center
MSD : Most Significant Digit
MS-DOS : MicroSoft Disk Operating System
MSIN : Mobile Station Identification Number
MSK : Minimum Shift Keying
MSN : Monitoring cell Sequence Number
MSO : Multiple System Operator
MSS : Maximum Segment Size
MSVC : Meta-signaling Virtual Channel
MT : Machine Translation
MT : Message Type
MTP : Message Transfer Part
MTP : Multicast Transport Protocol
MTS : Message Telecommunications Service
MTSO : Mobile Telephone Switching Office
MTU : Maximum Transmission Unit
MTU : Message Transfer Unit
MUSICAM : Masking Pattern Adapted Universal Sub-band Integrated Coding and Multiplexing
MVDS : Microwave Video Distribution System
MWIF : Mobile Wireless Internet Forum
--------------------------------------------------------------------------------
N
--------------------------------------------------------------------------------
NA : Network Aspects
NAK : Negative Acknowledgement
NAM : Number Assignment Module
NAMPS : Narrow Band AMPS
NANOG : North American Network Operators Group
NAP : Network Access Provider
NAPLPS : North American Presentation Level Protocol Syntax
NAS : Network Application Support
NAS : Network Access Server
NAS : Network Attached Storage
NASA : National Aeronautics and Space Administration
NAT : Network Address Translation
NBMA : Non-Broadcast Multiple Access
NBS : National Bureau of Standards
NC : Network Computer
NCDMA : Narrow Band CDMA
NCS : Network Computing System
NDIS : Network Driver Interface Specification
NE : Network Element
NetBIOS : Network Basic Input/Output System
NETBLT : NETwork Block Transfer
NFS : Network File System
NGI : Next Generation Internet
NHC : Next Hop Client
NHOP : Next Hop
NHRP : Next Hop Resolution Protocol
NHS : Next Hop Server
NI : Network Interconnect
NIC : Network Interface Card
NIC : Network Information Center
NID : Network Identification
NII : National Information Infrastructure
NiPC : Network Integrated PC
NIIT : National Information Infrastructure Testbed
N-ISDN : Narrowband ISDN
NIST : National Institute of Standards and Technology
NIU : Network Interface Unit
NLSP : NetWare Link State Protocol
NMS : Network Management System
NMT : Nordic Mobile Telecommunication System
NNI : Nederlands Normalisatie-Institute
NNI : Network to Network Interface
NNI : Network Node Interface
NNTP : Network News Transfer Protocol
NOC : Network Operations Center
NOI : Notice of Inquiry
NOS : Network Operating System
NP : Network Performance
NPC : Network Parameter Control
NPR : Noise Power Ratio
NREN : National Research and Educational Network
NRM : Network Resource Management
NRT-VBR : Non-Real_Time Variable Bit Rate
NRZ : Non Return to Zero
NRZI : Non Return to Zero Invert
NSAP : Network Service Access Point
NSF : National Science Foundation
NSFNET : National Science Foundation NETwork
NSP : Network Service Provider
NSR : Non-Source Routed
NSTC : National Science and Technology Council
NT : Network Terminator
NTB : Network Time Protocol
NTM : Network Traffic Management
NTT : Nippon Telegraph and Telephone Corporation
NTSC : National Television System Committee
NVOD : Near Video On Demand
NWN : National Wireless Network
--------------------------------------------------------------------------------
O
--------------------------------------------------------------------------------
OA : Office Automation
OA&M : Operation, Administration and Maintenance
OASIS : Organization for the Advancement of Structured Information Standards
OCC : Optical Channel Controller
OC-n : Optical Carrier-level n
OCR : Optical Character Recognition
ODA : Open Document Architecture
ODBC : Open DataBase Connectivity
ODI : Open Data-link Interface
ODIF : Open Document Interchange Format
ODP : Open Distributed Processing
ODSI : Optical Domain Service Interconnect
OGIS : Open Geodata Interoperability Specification
OIF : Optical Interworking Forum
OLE : Object Linking and Embedding
OLI : Originating Line Information
OLTP : Online Transaction Processing
OMG : Object Management Group
ONA : Open Network Architecture
ONC : Optical Network Controller
ONU : Optical Network Unit
OOD : Object-Oriented Design
OODB : Object Oriented Data Base
OOF : Out of Frame
OOP : Object-Oriented Programming
OPCR : Originating Program Clock Reference
OQPSK : Offset Quadrature Phase Shift Keying
OS : Operating System
OSF : Open Software Foundation
OSI : Open Systems Interconnection
OSID : Origination Signaling identifier
OSP : Operator Service Provider
OSPF : Open Shortest Path First
OSS : Operator Service Switch
OTN : Optical Transport Network
OTP : Open Trading Protocol
OUI : Organization Unique Idenfifier
OUI : Organizational Unit Idenfifier
OXC : Optical Cross Connect
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P
--------------------------------------------------------------------------------
P2P : Peer to Peer
P3P : Platform for Privacy Preferences
PAD : Packet Assembler/Disassembler
PAL : Phase Alternation Line
PAM : Pulse Amplitute Modulation
PBX : Private Branch eXchange
PC : Personal Computer
PC : Priority Control
PC : Protocol Control
PCB : Printed Circuit Board
PCI : Peripheral Component Interconnect
PCI : Peripheral Component Interface
PCM : Pulse Code Modulation
PCMCIA : PC Memory Card International Association
PCN : Personal Communications Network
PCO : Point of Control and Observation
PCR : Peak Cell Rate
PCR : Program Clock Reference
PCS : Personal Communication Services
PCS : Personal Communication System
PCVC : Point to Point Switched Virtual Connections
PD : Packetization Delay
PD : Phase Detector
PDA : Personal Digital Assistant
PDH : Plesiochronous Digital Hierarchy
PDM : Pulse Duration Modulation
PDMS : Product Data Management System(제품 정보 시스템)
PDN : Public Data Network
PDU : packet Data Unit
PDU : Protocol Data Unit
PEM : Privacy Enchanced Mail
PERT : Program Evaluation and Review Technique
PF : Power Factor
PG : Power Gain
PGA : Power Grid Array
PHP : Personal Handy Phone(Japan)
PHS : Personal Hand phone System(Japan)
PHY : Physical Layer of the OSI model
PHY : Physical Layer
PIA : Peripheral Interface Adapter
PICS : Protocol Implementation Conformance Statement
PID : Protocol Identifier Governing Connection Types
PIM : Personal Information Manager
PIM : Protocol Independent Muticast
PIN : Positive Intrinsic Negative(diode)
PING : Packet InterNet Groper
PIXIT : Protocol Implementation eXtra Information for Testing
PL : Physical Layer
PL : Power Level
PLA : Programmable Logic Array
PLC : Power Line Communications
PLC : Programmable Logic Controller
PLCP : Physical Layer Convergence Protocol
PLD : Programmable Logic Device
PLL : Phase Locked Loop
PLM : Product Lifecycle Management
PLMN : Public Land Mobile Network
PLOA : Protocol Layers over ATM
PLPC : Physical Layer Convergence Protocol
PLT : Power Line Telecommunications
PM : Phase Modulation
PM : Physical Medium
PM : Pulse Modulation
PMD : Physical Layer Dependent sub-layer
PNA : Phoneline Network Alliance
PNG : Portable Network Graphics
PNNI : Private Network Node Interface
PNO : Public Network Operator
PNP : Positive Negative Positive
POD : Point Of Deployment
POH : Path Overhead
POI : Path Overhead Indicator
PON : Passive Optical Network
POP : Point of Presence
POP : Post Office Protocol
POS : Point of Sale
POTS : Plain Old Telephone Service
PPD : Partial Packet Discard
PPM : Pulse Per Million
PPP : Point-to-Point Protocol
PPS : Pulse Per Second
PRI : Primary Rate Interface
PRM : Partner Relation Management
PRN : Pseudo Random Noise
PROM : Programmable Read Only Memory
PSA : Professional Service Automation
PSD : Power Spectral Density
PSDN : Packet Switched Data Network
PSG : Programmable Sound Generator
PSK : Phase Shift Keying
PSS : Performance Support System
PSTN : Public Switched Telephone Network
PT : Payroad Type
PT : Pocket Telephone
PTF : Powerline Telecommunications Forum
PTI : Payload Type Identifier
PTN : Personal Telephone Number
PUP : Parc Universal Packet
PUREG : Power Up Registration
PVC : Permanent Virtual Channel
PVC : Permanent Virtual Circuit
PVCC : Permanent Virtual Channel Connection
PVP : Permanent Virtual Path
PVPC : Permanent Virtual Path Connection
PWM : Pulse Width Modulation
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Q
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QA : Quality Assurance
QAM : Quadrature Amplitute Modulation
QC : Quality Control
QD : Queuing Delay
QFC : Quantum Flow Control
QoS : Quality of Service
QPSK : Quadrature Phase Shift Keying
QPSX : Queue Packet and Synchronous Circuit Exchange
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R
--------------------------------------------------------------------------------
R&D : Research and Development
RA : Radiocommunication Assembly
RACE : Research and development in Advanced Communications technologies for Europe
R-ADSL : Rate-Adaptive Digital Subscriber Line
RAI : Remote Alarm Indication
RAID : Redundant Array of Independent Disk
RAM : Random Access Memory
RAMP : Reliable Adaptive Milticast Protocol
RARP : Reverse Address Resolution Protocol
RASP : Remote Antenna Signal Processor
RBB : Residential Broadband
RBOC : Regional Bell Operating Company
RC : Radio Control
RC : Routing Control
RCC : Radio Common Carrier
RCU : Remote Cell Unit
RD : Route Descriptor
RDF : Remote Decrease Factor
RDI : Remote Defect Idenfication
RDI : Remote Defect Indication
RDP : Reliable Datagram Protocol
RDS : Radio Data System
RECC : Reverse Analog Control Channel
RED : Random Early Detection
REL : Release Message
RELP : Residual-Excited Linear Predictive Coding
RF : Radio Frequency
RFC : Request For Comments
RFI : Radio Frequency Interference
RFIC : Radio Frequency IC
RGB : Red-Green-Blue
RI : Routing Information
RII : Routing Information Indicator
RIP : Routing Information Protocol
RITL : Radio-in-the-Loop
RISC : Reduced Instruction Set Computer
RJE : Remote Job Entry
RLC : Release Computer
RM : Resource Management
RMFP : Reliable Multicast Framing Protocol
RMP : Reliable Multicast Framework
RMS : Root Mean Square
ROADS : Running Out of ADress Space
ROM : Read Only Memory
ROLC : Routing Over Large Clouds
RPC : Remote Procedure Call
RPE-LTP : Regular Pulse Excitation-Long Term Prediction
RPM : Revolutions Per Minute
RSA : Rural Service Area
RSSI : Radio Signal Strength Indicator
RSVP : ReSource reserVation Protocol
RT : Real Time
RT : Remote Terminal
RTCP : RTP Control Protocol
RTD : Research & Technology Development
RTI : Real Time Interrupt
RTL : Resistor Transistor Logic
RTO : Round Trip time-Out
RTOS : Real Time Operating System
RTP : Realtime Transport Protocol
RTS : Request To Send
RTS : Residual Time Stamp
RTSP : Real Time Streaming Protocol
RTT : Round Trip Time
RT-VBR : Real-Time Variable Bit Rate
RU : Replication Unit
RVC : Reverse Analog Voice Channel
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S
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SA : Source MAC address
SAAL : Signaling ATM Adaptation Layer
SACK : Selective ACKnowledgement
SAN : Storage Area Network
SAP : Service Access Point
SAP : Session Announcement Protocol
SAR : Segmentation and Reassembly Sublayer
SAW : Surface Acoustic Wave
SAT : Supervisory Audio Tone
SB-ADPCM : Sub Band-Adaptive Pulse Code Modulation
SBC : Single Board Computer
SCCP : Signaling Connection Control Part
SCI : Science Citation Index
SCI : Serial Communication Interface
SCM : Station Class Mrk
SCP : Service Control Point
SCR : Sustainable Cell Rate
SCSI : Small Computer System Interface
SCSP : Server Cache Synchronization Protocol
SDCC : Supplementary Digital Color Code
SDH : Synchronous Digital Hierarchy
SDLC : Synchronous Data Link Control
SDML : Signed Document Markup Language
SDP : Session Description Protocol
SDU : Service Data Unit
SDR : Session DiRectory
SE : switching Element
SE : System Engineer
SEAL : Simple and Efficient Adaptation Layer
SECAM : Sequential Couleur a Memoire
SET : Secure Electronic Transaction
SF : Switching Fabric
SFS : System-level File Server
SG : Signal Ground
SGCP : Simple Gateway Control Protocol
SGM : Segmentation Message
SGML : Standard Generalized Markup Language
SGMP : Simple Gateway Monitoring Protocol
SGW : Service Gateway
SI : Service information
SI : System Integration
SID : Signaling Identifier
SID : System Identification
SIM : Subscriber Interface Module
SIMM : Single Inline Memory Module
SIO : Serial Input and Output
SIP : Session Initiation Protocol
SIP : Simple IP
SIPP : Simple Internet Protocol Plus
SIPP : SMDS Interface Protocol
SIR : Sustained Information Rate
SLA : Service Level Agreement
SLIP : Serial Line Internet Protocol
SMC : Sleep Mode Connection
SMDS : Switched Multi-megabit Data Services
SMF : Single Mode Fiber
SMIL : Synchronized Multimedia Integration Language
SMS : Short Message Service
SMS : Service Management System
SMTP : Simple Mail Transfer Protocol
SNA : Storage Area Network
SN : Sequence Number
SN : Service Node
S/N : Signal to Noise
SNA : System Network Architecture
SNAP : Sub Network Access Protocol
SNMP : simple Network Management Protocol
SNP : Sequence Number Protection
SNR : Signal to Noise Ratio
SO : Serail Output
SOA : Start Of Authority
SOH : Section Overhead
SOHO : Small Office Home Office
SONAR : SOund NAvigation and Ranging
SONET : Synchronous Optical NETwork
SP : Stack Pointer
SP : Signal Processor
SP : Switching Point
SPCS : Stored Program Controlled Switch
SPE : Synchronous Payload Envelope
SPF : Shortest Path First
SPI : Serial to Parallel Interface
SPID : Service Protocol Identifier
SPL : Sound Pressure Level
SPLL : Software PLL
SPS : Service Provider System
SPTS : Single Program Transport Stream
SQL : Structured Query Language
SR : Shift Register
SR : Source Routing
SRAM : Static Random Access Memory
SRC : Strategic Review Committee
SRF : Specifically Routed Frame
SRM : Scalable Reliable Multicast
SRT : Specifically Routing Transparent
SRTS : Synchronous Residual Time Stamp
SS : Spread Spectrum
SSB : Single Sideband
SSCF : Service Specific Coordination Protocol
SSCOP : Service Specific Connection Oriented Protocol
SSCS : Service Specific Convergence Sublayer
SSD : Share Secret Data
SSL : Secure Socket Layer
SSP : Service Switching Point
SST : Secure Transaction Technology
ST : Segment Type
ST : Signaling Tone
ST-II : Stream Transport protocol-II
STB : Set Top Box
STE : Section Terminating Equipment
STE : Spanning Tree Explorer
STM : Synchronous Transfer Mode
STP : Signaling Transfer Point
STP : Shielded Twisted Pair
STS : Synchronous Time Stamp
STS-n : Synchronous Transport Signal-n
STU : Set Top Unit
SUT : System Under Test
SVB : switched Video Broadcasting
SVC : Switched Virtual Channel
SVC : Switched Virtual Connection (ATM)
SVCI : Switched Virtual Circuit Identifier
S-VGA : Super Video Graphics Array
SVP : Switched Virtual Path
SW : Short Wave
SWG : Sub-Working Group
SWR : Standing Wave Ratio
SWS : Silly Window Syndrome
SYN : SYNchronizing segment
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T
--------------------------------------------------------------------------------
TA : Terminal Adapter
TACS : Total Access Communication System
TAPI : Telephony Application Programmable Interface
TASI : Time Assignment Speech Interpolation
TB : Tranparent Bridging
TC : Transaction Capabilities
TC : Tranmission Convergence
TCAP : Transaction Capabilities Application Part
TCI : Test Cell Input
TCO : Test Cell Output
TCP : Transmission Control Protocol
TCP/IP : Transmission Control Protocol/Internet Protocol
TCS : Transmission Convergence Sublayer
TCXO : Temperature-Compensated Crystal Oscillator
TD : Tunnel Diode
TDD : Time Division Duplex
TDJ : Transfer Delay Jitter
TDM : Time Division Multiplexing
TDMA : Time Division Multiple Access
TDX : Time Division Switching system
TE : Terminal Equipment
TEI : Terminal Endpoint Identifier
TFTP : Trivial File Transfer Protocol
THD : Total Harmonic Distortion
TIA : Telecommunication Industry Association
TIPS : Tera Instruction Per Second
TLI : Transport Layer Interface
TLV : Type/Length/Value
TM : Traffic Management
TMN : Telecommunications Management Network
TMP : Test Management Protocol
TMSWG : Traffic Management Sub-Working Group
TMTP : Tree-based Multicast Transport Protocol
TNS : Transit Network Selection
TO : Telecommunications Operator
TOLR : Transmit Objective Loudness Rating
TOPS : Traffic Operator Position System
TOS : Type Of Service
TPCC : Third Party Call Control
TPEG : Transport Protocol Experts Group
TPON : Telephony over Passive Optical Network
TR : Transmitter
TRPB : Truncated Reverse Path Broadcast
TRS : Telecommunications Relay Services
TRS : Trunked Radio Service
TS : Time Sharing
TS : Time Stamp
TS : Transport Stream
TS : Time Slot
TSAP : Transport Service Access Point
TSPS : Traffic Service Position System
TTA : Telecommunications Technology Committee
TTL : Time To Live
TTL : Transistor Transistor Logic
TTS : Text-to-Speech conversion
TV : TeleVision
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U
--------------------------------------------------------------------------------
UA : User Agent
UART : Universal Asynchronous Receiver and Transmitter
UBR : Unspecified Bit Rate
UCT : Universal Coordinated Time
UDP : User Datagram Protocol
UDSL : Unidirectional HDSL(High data rate Digital Subscriber Line)
UE : User Element
UHF : Ultra High Frequency
UHV : Ultra High Vacuum
UI : User Interface
UIFN : Universal International Freephone Number
uKorea : Ubiquitous Korea
ULP : Upper Layer Protocol
UMA : Universal Multimedia Access
UMS : Unified Messaging System
UMTS : Universal Mobile Telecommunication Service
UNI : User Network Interface
UP : User Plane
UPC : Usage Parameter Control
UPS : Uninterruptible Power Supply
UPT : Universal Personal Telecommunications
URL : Uniform Resource Locator
URSI : Union Radio Scientifique International
UT : Upper Tester
UTC : Universal Time Code
UTOPIA : Universal Test & Operations PHY Interface for ATM
UTP : Unshielded Twisted Pair
UUCP : Unix to Unix Copy Program
UUCP : Unix-to-Unix Communication Protocol
UV : UltraViolet
UVA : UltraViolet Alpha
UVB : UltraViolet Beta
--------------------------------------------------------------------------------
V
--------------------------------------------------------------------------------
VA : Volt Ampere
VAN : Value Added Network
VASP : Value Added Service Provider
VAT : Visual Audio Teleconferencing
vBNS : very high performance Backbone Network Service
VC : Virtual Connection (ATM)
VCH : Virtual Channel Handler
VCC : Virtual Channel Connection
VCI : Virtual Channel Identifier
VCI : Virtual Circuit Identifier
VCI : Virtual Connection Identifier
VCO : Voltage-Controlled Oscillator
VCR : Video Cassette Recorder
VCVS : Voltage-Controlled Voltage Source(filter)
VDT : Video Display Terminal
VDSL : Very high bit rate Digital Subscriber Line
VESA : Video Electronics Standards Association
VFW : Video Graphics Windows
VGA : Video Graphics Array
VHDL : Very High Speed Integrated Circuit Hardware Descriptive Language
VHF : Very High Frequency
VHS : Video Home System
VIC : Video Conference
VIP : Video Information Provider
VLAN : Virtual Local Area Network
VLB : VESA Local Bus
VLF : Very Low Frequency
VLR : Visitor Location Register
VLSI : Very Large Scale Integration
VML : Vector Markup Language
VMTP : Versatile Message Tranfer Protocol
VOD : Video On Demand
VP : Virtual Path
VPI : Virtual Path Identifier
VPIM : Voice Profile for Internet Messaging
VPH : Virtual Path Handler
VPN : Virtual Private Network
VP/VC : Virtual Path, Virtual Circuit
VPC : Virtual Path Connection
VPCI/VCI : Virtual Path Connection Identifier/Virtual Channel Identifier
VPI : Virtual Path Identifier
VQ : Vector Quantization
VR : Virtual Reality
VRAM : Video Random Access Memory
VRML : Virtual Reality Modeling Language
VRTP : Virtual Reality Transfer Protocol
VS : Virtual Scheduling
VSAT : Very Small Aperture satellite Terminals
VSAT : Very Small Aperture Terminal
VSELP : Vector Sum Excited Linear Predictive Coding(IS-54 speech encoding)
VSWR : Voltage Standing Wave Ratio
VT : Vertual Terminal
--------------------------------------------------------------------------------
W
--------------------------------------------------------------------------------
W3C : World Wide Web Consortium
WAIS : Wide Area Information Server
WAN : Wide Area Network
WAP : Wireless Application Protocol
WARC : World Administrative Radio Conference
WAS : Web Application Server
WATS : Wide Area Telecommunications Service
WBI : Web Based Instruction
WCPE : Wireless Customer Premises Equipment
WD : Working draft
WDM : Wavelength Division Multiplexing
WG : Working Group
WFQ : Weighted Fair Queuing
WLAN : Wireless LAN
WLL : Wireless Local Loop
WML : Wireless Markup Language
WORM : Write Once Read Many
WP : World Processor
WS : Workstation
WSCI : Web Service Choreography Interface
WSCL : Web Service Conversation Language
WSFL : Web Service Flow Language
WTO : World Trade Organization
WWW(W3) : World Wide Web
WYSIWYG : What You See Is What You Get
--------------------------------------------------------------------------------
X
--------------------------------------------------------------------------------
XDR : eXternal Data Representation
XML : eXtensible Markup Language
XMTR : Transmitter
XNS : Xerox Network System
X/OPEN : UNIX-Open Systems
XOR : Exclusive-OR gate
XTALK : Crosstalk
XSL : eXtensible Stylesheet Language
XTP : eXpress Transfer Protocol
--------------------------------------------------------------------------------
Y
--------------------------------------------------------------------------------
Y2k : Year 2000
YAG : Yttrium Aluminum Garnet
YIG : Yttrium Iron Garnet
--------------------------------------------------------------------------------
Z
--------------------------------------------------------------------------------
ZD : Zero Defects
ZIP : Zigzag Inline Package
ZM : Zone Marker
Z-series : ITU-T Recommendation Z series
--------------------------------------------------------------------------------
