FASB
|
Financial Accounting Standards Board (USA)
|
FAT
|
File Allocation Table
|
FC
|
Frame Control, or Fiber Channel
|
FCAPS
|
Fault, Configuration, Accounts, Performance, Security (ISO)
|
FCC
|
Federal Communications Commission (USA)
|
FCS
|
Frame Check Sequence
|
FDD
|
Frequency Division Duplex
|
FDDI
|
Fiber Distributed Data Interface
|
FDIC
|
Federal Deposit Insurance Corporation (USA)
|
FDMMA
|
Frequency Division Multiplexing Multiple Access
|
FEP
|
Front-End Processor
|
FHSS
|
Frequency Hopping Spread Spectrum
|
FIFO
|
First-In First-Out
|
FITL
|
Fiber In The Loop
|
FM
|
Frequency Modulation
|
FMS
|
Fraud Management System
|
FO
|
Fiber Optic
|
FOD
|
Fax on Demand
|
FR
|
Frame Relay
|
FRAD
|
Frame Relay Access Device, or Assembler/ Disassembler
|
FRS
|
Family Radio Service
|
FSK
|
Frequency-Shift Keying
|
FSS
|
Fixed Satellite System
|
FTAM
|
File Transfer, Access, and Manipulation (ISO)
|
FT1
|
Fractional T1
|
FTP
|
File Transfer Protocol (TCP/IP)
|
FTS
|
Federal Telecommunications System
|
FTTB
|
Fiber To The Building
|
FTTC
|
Fiber To The Curb
|
FTTK
|
Fibre To The Kerb
|
FTTH
|
Fiber To The Home
|
FWA
|
Fixed Wireless Access
|
GAN
|
Global Area Network
|
GATT
|
General Agreement on Tariffs and Trade
|
Gb
|
gigabit
|
GB
|
gigabyte
|
GDS
|
Generic Digital Services
|
GEO
|
Geostationary-Earth-Orbit
|
GHz
|
gigaHertz (billions of cycles per second)
|
GIS
|
Geographic Information System
|
GMRS
|
General Mobile Radio Service
|
GOSIP
|
Government Open Systems Interconnection Profile (USA)
|
GPRS
|
General Packet Radio Service
|
GPS
|
Global Positioning System
|
GRX
|
GPRS Roaming Exchange
|
GSA
|
General Services Administration (USA)
|
GSM
|
Global System for Mobile telecommunications, or Groupe Spécial Mobile
|
GUI
|
Graphical User Interface
|
GVPN
|
Global Virtual Private Network
|
H0
|
High-capacity ISDN channel operating at 384 kbps
|
H11
|
High-capacity ISDN channel operating at 1.536 Mbps
|
H323
|
ANSI standard for format over IP
|
HDLC
|
High-level Data Link Control (ISO)
|
HDSL
|
High-bit-rate Digital Subscriber Line
|
HDTV
|
High-Definition Television
|
HF
|
High Frequency (3 MHz to 30 MHz)
|
HFC
|
Hybrid Fiber/Coax
|
HIC
|
Head-end Interface Converter
|
HLR
|
Home Location Register
|
HomePNA
|
Home Phoneline Networking Alliance
|
HPPI
|
High-Performance Parallel Interface
|
HTML
|
HyperText Markup Language
|
HTTP
|
HyperText Transfer Protocol
|
HVAC
|
Heating, Ventilation, and Air Conditioning
|
Hz
|
Hertz (cycles per second)
|
I/O
|
Input/Output
|
IA5
|
International Alpha Set No. 5
|
IAB
|
Internet Architecture Board
|
IAC
|
Install And Commission
|
IANA
|
Internet Assigned Numbers Authority
|
ICANN
|
Internet Corporation for Assigned Names and Numbers
|
ICI
|
Interexchange Carrier Interface
|
ICMP
|
Internet Control Message Protocol
|
ICR
|
Intelligent Call Routing
|
ICS
|
Intelligent Calling System ID Identification
|
IDDD
|
International Direct Dialing Designator
|
iDEN
|
integrated Dispatch Enhanced Network
|
IDPR
|
Interdomain Policy Routing
|
IEC
|
International Electrotechnical Commission, or InterExchange Carrier
|
IEEE
|
Institute of Electrical and Electronics Engineers
|
IESG
|
Internet Engineering Steering Group
|
IETF
|
Internet Engineering Task Force
|
ILEC
|
Incumbent Local Exchange Carrier
|
IM
|
Instant Messaging
|
IMAP
|
Internet Mail Access Protocol (IETF)
|
IMEI
|
International Mobile Equipment Identity
|
IMN
|
Intelligent Mobile Network
|
IMT-2000
|
International Mobile Telecommunications 2000 (ITU)
|
IMSI
|
International Mobile Subscriber Identity
|
IN
|
Intelligent Network
|
IN7
|
Compaq SS7 stack (previously DECss7)
|
INAP
|
Intelligent Network Application Part (IN)
|
INMS
|
Integrated Network Management System
|
INTELSAT
|
International Telecommunications Satellite Organization
|
I/O
|
Input/Output
|
IOC
|
InterOffice Channel
|
IOPS
|
Internet Operators' Providers Services
|
IP
|
Intelectual Property
|
IP
|
Intelligent Peripheral (IN)
|
IP
|
Internet Protocol (IETF)
|
IPN
|
Intelligent Peripheral Node
|
IPO
|
Initial Public Offering
|
IPoATM
|
Internet Protocol over ATM
|
IPR
|
Intellectual Property Rights
|
IPX
|
Internetwork Packet Exchange
|
IrDA
|
Infrared Data Association
|
IrLAN
|
Infrared LAN
|
IrLAP
|
Infrared Link Access Protocol
|
IRC
|
International Record Carrier
|
IRR
|
Internal Rate of Return (Financial Modelling)
|
IRQ
|
Interrupt Request
|
IRTF
|
Internet Research Task Force
|
IS
|
Information System, or Interim Standard (TIA/EIA)
|
IS-41
|
TIA/EIA Interim Standard for mobile management
|
ISA
|
Industry Standard Architecture
|
ISC
|
International Switching Center
|
ISDN
|
Integrated Services Digital Network
|
ISM
|
Industrial, Scientific, and Medical (frequency bands)
|
ISMI
|
International mobile subscriber identity
|
ISO
|
International Standards Organization
|
ISOC
|
Internet Society
|
ISP
|
Internet Service Provider
|
ISUP
|
ISDN Service User Part
|
IT
|
Information Technology
|
ITR
|
Intelligent Text Retrieval
|
ITT
|
International Telegraph and Telephone
|
ITT
|
Invitation To Tender
|
ITU
|
International Telecommunication Union
|
ITU-R
|
International Telecommunication Union-Radiocommunications
|
ITU-T
|
International Telecommunication Union-Telecommunications
|
IVR
|
Interactive Voice Response
|
IXC
|
IntereXchange Carrier (also IEC)
|
MB
|
megabyte
|
MAC
|
Media Access Control, or Move, Add, and Change
|
MAN
|
Metropolitan Area Network
|
MAP
|
Manufacturers Application Protocol (ISO, General Motors), or Mobile Applications Port
|
MAPI
|
Messaging Applications Programming Interface (Microsoft)
|
MAPS
|
Maps Application Provisioning System
|
MAU
|
Multistation Access Unit
|
MC
|
Management Center or Message Center
|
MCA
|
Micro Channel Architecture (IBM)
|
MCU
|
Multipoint Control Unit
|
MD
|
Mediation Device
|
MDF
|
Main Distribution Frame
|
MDN
|
Mobile Directory Number
|
MEO
|
Middle-Earth-Orbit
|
MES
|
Master Earth Station
|
MF
|
Mediation Function, or Medium Frequency (300 kHz to 3 MHz)
|
MHS
|
Message Handling Source MHz megahertz (millions of cycles per second)
|
MIB
|
Management Information Base
|
MIC
|
Management Integration Consortium
|
MILNET
|
Military Network (USA)
|
MIME
|
Multipurpose Internet Mail Extensions
|
MIN
|
Mobile Identification Number
|
MIPS
|
Millions of Instructions Per Second
|
MIS
|
Management Information Services, or Marketing Intelligence System
|
MLS
|
Mobile Location Services
|
MMDS
|
Multichannel, Multipoint Distribution Service
|
MMS
|
Multimedia Message Service
|
MO
|
Magneto-Optical Modem Modulator/demodulator
|
MOU
|
Minutes of Use, or Memorandum of Understanding
|
MPEG
|
Motion Picture Experts Group
|
MPLS
|
Multi Protocol Label Switching (IETF)
|
MPPP
|
Multilink Point-to-Point Protocol
|
MRI
|
Magnetic Resonance Imaging
|
ms
|
millisecond (thousandth of a second)
|
MS
|
Mobile Station
|
MSC
|
Mobile Switching Center
|
MSN
|
Microsoft Network
|
MSRN
|
Mobile Station Roaming Number
|
MSS
|
Mobile Satellite Service
|
MTBF
|
Mean Time Between Failure
|
MTP
|
Message Transfer Part (IN)
|
MTS
|
Message Telecommunications Service
|
MTSO
|
Mobile Telephone Switching Office
|
MTTR
|
Mean Time To Repair
|
MTU
|
Maximum Transmission Unit
|
MVDS
|
Microwave Video Distribution System
|
MVPRP
|
Multivendor Problem Resolution Process
|
