-E-
E	20 bit sequence
E&M	Ear and Mouth: Separate signaling lines
E/O	Electrical/Optical converter
E2E	End to End
EA	European Accreditation
EBNF	Extended Backus-Naur Form
EBU	European Broadcasting Union
ebXML	electronic business XML Consortium
EC	Echo Canceled
EC	Echo Canceler
EC	Echo Control
EC	Error Control (TR-29)
EC	Error Correction
EC	European Commission
EC	Exchange Carriers
ECAN	Echo Cancellation
ECB	Electronic Codebook
ECC	Expanded Control Channel
ECCA	European Cable Communications Association
ECDC	Error Correction / Data Compression
ECE	Echo Cancellation Equipment
ECIC	Electronic Communications Implementation Committee
ECM	Error Correction Mode
ECMA	European Communications Manufacturers Association
ECN	Encoding Control Notation (ASN.1)
ECR	Engineering Change Request
ECS	Emergency Calling Service
ECSD	Enhancement of High Speed Circuit Switched Data
ECSP	Electronic Communications Service Provider
ECSQ	Entropy Constrained Scalar Quantization
ECT	Explicit Call Transfer
ECTA	European Competitive Telecommunications Association
ECTEL	European Telecommunications and Professional Electronics Industry
ECTF	Enhanced Communication and Transport Service
ECTF	Enterprise Computer Telephony Forum
ECTRA	European Commission of Telecommunications Regulatory Authorities
EC-VBR	Embedded Coding Variable Bit Rate
ECVQ	Entropy Constrained Vector Quantization
EDACS	Enhanced Digital Access Communications System
EDC	Electronic Document Coordinator
EDCF	European Digital Cinema Forum
EDD	Electronic Document Distribution
EDGE	Enhanced Data rates for GSM Evolution
EDH	Electronic Document Handling
EDI	Electronic Data Interchange
EDSL	Emerging DSL (DSL Forum Study Group)
EDSLSG	Emerging DSL Study Group (DSL Forum)
EDT	European Deaf Telephone
EE	Equipment Engineering (ETSI Technical Committee)
EEA	European Economic Area
EEC	European Economic Community
EEMAC	Electrical and Electronic Manufacturers Association of Canada
EEP	Equal Error Protection
EES	Escrow Encryption Standard
EFC	Extended Fast Connect
EFIS	Electronic Flight Instrument Systems
EFM	Ethernet in the First Mile (IEEE 802.3ah)
EFR	Enhanced Full Rate
EFRC	Enhanced Full Rate Codec
EFT	Electrical Fast Transient
EFTA	European Free Trade Area
EG	ETSI Guide
EG	Expert Group
EG AN	ETSI Guide Access Network
EGDIR	Expert Group DIRectory system (EWOS)
EGMHS	Expert Group Message Handling System (EWOS)
EGPRS	Enhanced General Packet Radio System
EHS	European Home Standards
EI	Enhancement Intra (pictures, H.263)
EI	Error Indicator
EIA	Electronic Industries Alliance
EIAJ	EIA Japan
EIC	Equipment Installer's Code
EICTA	European Information and Communications Technology Industry Association
EICAS	Engine Indicating and Condition Advisory System
EID	Equipment Identifier
EID	Error Insertion Device
eifax	extended internet fax
EII	European Information Infrastructure
EIRP	Effective Isotropic Radiated Power
EIU	Extension In-Use
ELAWG	EMC Laboratories Accreditation Working Group
ELCP	Emulated Loop Control Protocol (ATMF, ETSI)
ELFEXT	Equal Level Far-End Crosstalk
EM	Electromagnetic
EMA	Electronic Messaging Association
EMC	ElectroMagnetic Compatibility
EMC	Equipment Manufacturer's Code
EMCS	ElectroMagnetic Compatibility Society
EME	Electromagnetic Emissions
EMI	Electromagnetic Interference
EMI	Exchange Message Interface (Bellcore standard for data transmission between RBOC/LEC and the IC/IXC/IEC)
EMP	Extended Megaco Package
EMS	Element Management System
EMS	Emergency Services
EMT	Electrical Metal Tubing
E-MTA	Embedded Multimedia Terminal Adapter
EMTEL	Emergency Telecommunications
EN	Enterprise Network
EN	European Norm
ENP	Extended Negotiation Procedure
ENUM	tElephone NUmbering Mapping (IETF)
EOB	End of Block
EOC	Embedded Operations Channel
EOI	End of Image
EOL	End of Line (T.4)
EOM	End of Message (T.30)
EOR/ERR	End of Retransmission/ Response for End of Retransmission
EOS	End of Selection
EOS	End of Sequence
EOSBS	End of Sub-Bitstream
EOS-PPS	End of Selection for selective polling applications
EOT	End of Transmission
E-OTD	Enhanced Observed Time Difference
EP	End Point (Q14/9, MediaHomeNet)
EP	Enhancement Predicted (pictures, H.263)
EP	Error Pattern
EP	Error Propagation
EP	ETSI Project
EP	Extended Protocol
EPA	Environmental Protection Agency
EP-CN	ETSI Project Corporate Network
EP-DTA	ETSI Project Digital Terminal Access
EP-EASI	ETSI Project-European ATM Services Interoperability
EPG	Electronic Programming Guides
EPHOS	European Procurement Handbook for Open Systems
EPIIC	European Program on Information Infrastructure Committee
EPIISG	European Project on Information Infrastructure Starter Group
EPL	Echo Path Loss
EPM	Enter Parameter Mode
EPP	ETSI Partnership Project
EPT	Echo Protect Time
ERC	European Radio Committees
EREC	Error Resilient Entropy Code/Error Robust Entropy Code
ERF	Emergency Related Forwarding
ERL	Echo Return Loss
ERM	ETSI committee on EMC and Radio spectrum Matters
ERP	Ear Reference Point
ERP	Effective Radiated Power
ERP	EOC Register Protocol
ERPS	Enhanced Reference Picture Selection
ES	Echo Suppressor
ES	Elementary Stream
ES	Emergency Services
ES	Errored Seconds
ES	Escape Sequence
ES	Escape Signal
ES	ETSI Standard
ES	Express Swapping
ESD	Echo Suppressor Devices
ESD	ElectroStatic Discharge
ESF	Extended SuperFrame
ESI	Electronic Signatures and Infrastructures
ESI	Emergency Services Interface
ESLR	Equivalent SLR
ES/MS	Escape Signal/Mode Select
ESMR	Enhanced Specialized Mobile Radio
ESMTP	Extended Simple Mail Transfer Protocol
ESN	Electronic Serial Number
ESNX	Expanded Electronic Serial Number
ESPM	Extended System Parameters Message
ESRD	Emergency Services Routing Digits
ESS	Enhanced Signaling Systems
eSTL	evolving STL
ET	Emergency Telecommunications
ET	(FCC) Office of Engineering and Technology
E-TDMA	Extended Time Division Multiple Access
ETIB	European Telecoms Intelligence Bulletin
ETNO	European Telecom. Network Organization
ETNS	European Telephony Numbering Space
ETO	European Telecommunications Office
ETP	European Telecommunications Platform
ETR	ETSI Technical Report
ETS	Emergency Telecommunications Service
ETS	European Telecommunications Standard (ETSI)
ETSI	European Telecommunications Standards Institute
EU	European Union
EU MRA	European Union Mutual Recognition Agreements
EURESCOM	European Institute for Research and Strategic Studies in Telecommunications
EUROBIT	European Association of Manufacturers of Business Machines and Information Technology
EUT	Equipment Under Test
EV	Embedded VBR
EVRC	Enhanced Variable Rate Codec
EWL	Equivalent Working Length
EWOS	European Workshop on Open Systems
EWP	ETSI Work Program
EXOR	Exclusive OR
EXP	Equal Erasure Protection
EZW	Embedded Zero-tree Wavelet (coding)
-F-
FA	Flexible Alerting
FAA	Federal Aviation Administration (U.S.)
FACCH	Fast Associated Control Channel
FAMOUS	Future Advanced Mobile Universal System
FAQ	Frequently Asked Questions
FAR	Federal Aviation Regulations (U.S.)
FAS	Facility Associated Signaling
FAS	Frame Alignment Signal
FBI	Federal Bureau of Investigation (U.S.)
FBM	FEXT Bit Map mode (G.992.1, Annex C)
FC	Feature Code
FC	Type of commercial fiber optic connector (Threaded)
FC-PH	Fibre Channel Physical and Signaling Interface (ANSI X3)
FCA	Fixed Channel Allocation
FCAPS	Faults, Configuration, Accounting, Performance and Security (ISO)
FCC	Federal Communications Commission (U.S.)
FCD	Fast Track Committee Draft (ISO)
FCF	Facsimile Control Field (T.30)
FCF	Forward Control Field
FCS	Frame Check Sequence
FDA	Food and Drug Administration (U.S.)
FDAM	Final Draft AMendment (ISO)
FDD	Frequency Division Duplexing
FDDI	Fiber Distributed Data Interface
FDM	Frequency Division Multiplexing
FDIS	Final Draft International Standard (ISO)
FDM	File Diagnostic Messages
FDMA	Frequency Division Multiple Access
FDX	Full Duplex
FE	Facilities Exchange
FE	Functional Entities
FEAL	Fast Encryption Algorithm
FEC	Forward Error Correction
FEC	Frame Erasure Concealment
FECC	Far End Camera Control
FE-EC	Far End - Echo Canceller
FEF	Flat Equalized FEXT
FEI	Federation of Electronic Industries (UK)
FEQ	Frequency Domain Equalizer
FER	Frame Error Rate
FEXT	Far End Cross Talk
FF	Feed Forward
FFPIM	Full-mode Facsimile Profile of Internet Mail
FFS	For Further Study
FFT	Fast Fourier Transform
FG	Focus Group
FG	Functional Group
FGS	Fine Granularity Scalability
FHWA	Federal Highway Administration (U.S.)
FI	Format Identifier
FIF	File Interchange Format
FIFO	First In First Out
FIPS	Federal Information Processing Standard
FIR	Finite Impulse Response
FL	Facilities List
FLC	Fixed Length Codeword
FLMTS	Future Land Mobile Telephony Systems
FLP	FLexible Precoding
FM	Fault Management
FM	Frequency Modulation
FMS	Flight Management Systems
FMT	Filtered MultiTone
FNA	Functional Network Architecture
FNE	Fixed Network Equipment
FNV	Field Not Valid
FNV	Frame Not Valid
FO	Fiber Optic (TIA)
FO	Foreign Office
FOC	Fiber Optic Connector
FOCIS	Fiber Optic Connector Intermateability Standard
FoIP	Fax over Internet Protocol
FOM	Figure of Merit
FOREG	Forced Registration Flag
FOTAG	Fiber Optic TAG
FOTP	Fiber Optic Test Procedure
FP	Fixed Part
FPDAM	Final Proposed Draft Amendment
FPGA	Field Programmable Gate Array
FPH	Freephone
FPLMTS	Future Public Land Mobile Telephone Systems
FPP	Frames Per Packet
FPS	Frames Per Second
fps	frames per second
FR	Federal Regulation (US)
FR	Frame Relay
FR	Full Reference
FRAPI-A	An ISDN Architecture in use in Japan
FRC	Full Rate Codec
FRF	Frame Relay Forum
FRS	Florida Relay Service
FS	Fixed Satellite
FS	Frame Size
FS	Full Service
FSA	Framework Study Areas
FSAN	Full Service Access Networks Consortium
FSK	Frequency Shift Keying
FSM	Finite State Machine (H.323 Gatekeeper)
FSRA	Fast Seamless Rate Adaptation
FSS	Fixed Satellite Service
FS VDSL	Full Service VDSL (FSAN Committee)
FT	Fixed Terminals
FT	Fixed radio Terminal
FTAA	Free Trade Area of the Americas
FTAM	File Transfer, Access and Management
FTBP	File Transfer Body Part
FTC	Field Transform Coding
FTH	Class 1 command HDLC transmit
FTP	File Transfer Protocol
FTP	Foiled Twisted Pair
FTRI	Florida Telecommunications Relay, Inc. (www.ftri.org)
FTT	Failure To Train
FTTB	Fiber To The Building
FTTC	Fiber To The Curb
FTTCab	Fiber To The Cabinet
FTTEx	Fiber To The Exchange
FTTH	Fiber To The Home
FTTO	Fiber to the Office
FTTx	Fiber to all the different places (curb, building, cabinet, home, etc.)
FUNI	Frame Based UNI
FVC	Forward Voice Channel
FW	Firewall
FWA	Fixed Wireless Access
FWI	Flash With Info
FWUF	Federal Wireless Users Forum (U.S.)
Fx	Crossover Frequency
FX	Foreign eXchange
FXS	Foreign Exchange Station
FYI	For Your Information
-G-
G3FT	G3 FX Teleservice
G3G	Global Third Generation
GA	General Assembly (ETSI)
GAL	Graphics Adapter Language
GAP	Generic Access Profile
GASP	Gatekeeper Synchronization Protocol
GAT	Generic Application Template
GAT	Group Audio Terminal (ITU Rec. P.300)
GATT	General Agreement on Trade and Tariffs
GBSC	Group of Blocks Start Code
GCAC	Generic CAC
GCC	Generic Conference Control
GDMO	Guidelines for the Definition of Managed Objects
GDMO	Generic Definition of Managed Objects
GDR	Global Desired Receive (PSD)
GEF	Generic Extensibility Framework
GEM	Globally Executable MHP
GENA	General Event Notification Architecture
GEO	Geostationary Earth Orbit
GETS	Government Emergency Telecommunications Service
GF	Generic Functional Procedures
GFID	GOB frame identification
GFP	Generic Frame Protocol
GFR	Guaranteed Frame Rate (ATM Forum)
gi	gains information
GI	Graded Index
GIDS	Global IP Directory Service
GIDS	Global IP telephony Database Service
GII	Global Information Infrastructure
GIIF	Global ISDN & Future Access Technologies Industry Forum, http://www.giif.com
GISN	Global IP-Telephony Subscriber Number
GIT	Generic Identifier Transport
GK	GateKeeper
GLP	Geographic Location Profile
GMC	Global Motion Compensation
GMDSS	Global Maritime Distress and Safety System
GMII	Gigabit Media Independent Interface
GMM	Global Multimedia Mobility
GMR	Geostationary Mobile Radio
GMSK	Gaussian Minimum Shift Keying
GMVC	Global Motion Vector Coding
GN	GOB Number (H.263)
GNATT	Generic Enhanced Teleservice Transport
GOB	Group of Blocks (H.261, H.263)
GOF	Glass Optical Fiber
GONOW	ETSI NA Task Force, Managed by European Projuction Information Infrastructure Coordination (EPIC)
GOP	Group of Pictures
GoS	Grade of Service
GOSIP	Government Open Systems Interconnection Profile
GOSS	Guide to Open Systems Specification
G-PAD	Generalized polling protocol - Packet Assembly/Disaaembly
GPCAS	Global Product Conformity Assessment System
GPM	General Page Message
GPON	Gigabit-per-second Passive Optical Networks
GPS	Global Positioning System
GRJ	Gatekeeper Reject
GRP	Good Regulatory Practices
GRQ	Gatekeeper Discovery Request
GPRS	General Packet Radio Service
GSA	General Services Administration
GSC	GOB Start Code
GSM	Global System for Mobile Communications
GSMP	General Switch Management Protocol Working Group (IETF)
GSN	Global Subscriber Number
GSO	Geostationary Satellite Orbit
GSR	GPON Service Requirement
GSS	Generalized Spectral Shaping
GSS	Generic Security Application Programming Interface
GSS	Generic Security Service
GSS	Generic Supplementary Services
GSTN	General Switched Telephone Network (i.e., PSTN)
GT	Global Title
GTA	Global Title Address
GTAAB	GSM Technical Advisory Ad hoc Board
GTAI	Global Title Address Information
GTD	Generic Transparency Descriptor
GTSC	Global Telecommunication Standardization Collaboration (formerly the GSC)
GTT	Global Text and Total conversation services (3GPP)
GTT	Global Title Translation
GUI	Graphical User Interface
GUP	Gatekeeper Update Protocol
GW	GateWay
GWC	GateWay Controller
GWLOC	Gateway Location protocol
-H-
H/W	Hardware
HAC	Hearing Aid Compatible
HAM	Amateur Radio
HAN	Home ATM Network
HAT	Hadamard Transform (JVT)
HATIS	Hearing Aid Telephone Interconnect System
HATS	Head and Torso Simulator
HC	Header Counter
HDLC	High level Data Link Control
HDLU	High speed Dynamic Link Unit
HDML	Handheld Device Markup Language, a forerunner of WML
HDSL	High-rate Digital Subscriber Line
HDTV	High Definition Television
HDX	Half Duplex
HE	High End
HEC	Header Error Count (ATM)
HE-LPC	Harmonic Excitator Linear Predictive Coder
HEMP	High Energy Electromagnetic Pulses
HE-RSVP	Head End Resource ReSerVation Protocol
HES	Home Electronic System
HF	High Frequency
HF	Human Factors
HFC	Hybrid Fiber Coax
HFCI	The H.323 Firewall Control Interface
HFR	Hybrid Fibre Radio
HFT	Hands Free Telephone
HFTP	Hybrid-Fiber Twisted Pair
HFX	Hawthorne Facsimile Cipher
HHR	Half-Horizontal Resolution (352 by 480 or 576)
HI	High Impedance
HIA	Hearing Industries Association
HINE	Heterogeneous In-house Networking Environment
HIPERLAN	High Performance Radio Local Area Network
HIPPI	High-Performance Parallel Interface
HKM	Hawthorne Key Management
HLC	Higher Layer Compatibility
HLF	Home Location Function
HLI	High Layer Information
HLR	Home Location Register
HLTF	High Level Task Force
HLTG	High Level Task Group
HMAC	Keyed-Hashing for Message Authentication
H-MLP	High Speed Multi Layer Protocol
HN	Home Network
HNI	Home Network Identity
HNS	Hughes Network Systems
HNOS	Home NetWork Operating System
HNW	Home NetWork (VESA)
HO	Hand Off
HomePNA	Home Phoneline Networking Alliance
HPC	High Probability of Completion
HPCI	Harmonized Programmable Communications Interface
HPF	High Pass Filter
HPL	Home-Phone LAN
HPLI	Higher Layer Protocol Identifiers
HPNA	Home Phoneline Network Alliance
HPUX	Unix for HP workstations
HRC	Half Rate Codec
HRC	Hypothetical Reference Circuits
HRD	Hypothetical Reference Decoder
HRDJ1	Hardwired Jack
HRPD	High Rate Packet Data
HS	Harmonized Standards
HSCSD	High Speed Circuit Switched Data
HSD	High Speed Data Channel
HSG3	High Speed V.34 HDX Fax
HSM	High Speed Modem
HSP	Host Signal Processing
HSRC	Hypotherical Signaling Reference Connection
HSSG	High Speed Study Group (IEEE)
HSSI	High Speed Serial Interface
HST	US Robotics proprietary half duplex modulation
HSTU-C	High Speed Transceiver Unit - Central
HSTU-R	High Speed Transceiver Unit - Remote
HTML	Hyper Text Markup Language
HTTP	HyperText Transport Protocol
HTU-C	Handshake Transceiver Unit - Central Office End
HTU-R	Handshake Transceiver Unit - Remote Terminal End
HW	Hardware
HWCI	Hardware Configuration Item

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