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The A - Z of Telephone Accronyms

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I/N Interference to Noise Ratio
I/Q Inphase-Quadrature
IAAB Inter-American Association of Broadcasters
IAB International Association of Broadcasting
IABM International Association of Broadcast Manufacturers
IAC Industry Advisory Committee (to FCC or other agency)
IAC Internet Access Coalition
IATSE International Alliance of Theatrical Stage Employees
IB FCC International Bureau
IB In Band
IBA Independent Broadcasting Authority (England)
IBAC In-Band, Adjacent Channel
IBC International Broadcast Convention
IBEW International Brotherhood of Electrical Workers
IBFS International Bureau Filing System (at FCC)
IBI In-Band, Interstitial (for DAB sharing in FM band)
IBO International Broadcasting Organization
IBOC In-Band, On-Channel (for DAB sharing in FM band)
IBRC In-Band, Reserved Channel
IBRD International Bank for Reconstruction & Development
IBS Intercollegiate Broadcasting System
IBTO International Broadcasting & Television Organization
ICA International Communications Association
ICAO International Civil Aviation Organization
ICBA International Cellular Vision Association
ICC Internet Content Coalition
ICE International Consortium on Engineering
ICIA International Communications Industries Association
ICO Intermediate Circular Orbit (Communications Satellites)
ICPM Incidental Carrier Phase Modulation
ICR Inter-City Relay Station
ICTA Independent Cable & Television Association
ICTV Independent Community Television Alliance
ID Station identification
IDLC Integrated Digital Logic Circuit
IDN Integrated Digital Network
IDRA International Digital Radio Association
IDTV Improved Definition Television
IEC International Electrotechnical Commission
IEE Institution of Electrical Engineers (United Kingdom)
IEEE Institute of Electrical & Electronics Engineers
IETF Internet Engineering Task Force
IEV International Electrotechnical Vocabulary
IFAST International Forum on AMPS Standards Technology
IFB Interruptable fold-back for SNG circuits
IFFT Inverse Fast Fourier Transform
IFIP International Federation for Information Processing
IFPI International Federation of Phonogram & Videogram Producers
IFRB International Frequency Registration Board (ITU obsolete)
IFTC International Film & Television Council
IHF Institute of High Fidelity (merged into EIA)
IIPA International Intellectual Property Alliance
IISP Information Infrastructure Standards Panel
IITF Information Infrastructure Task Force
ILEC Incumbent Local Exchange Carrier
IM Intermodulation
IMA Interactive Multimedia Association
IMC IMSI Management Council
IMD Intermodulation Distortion
IMEI International Mobile Equipment Identity
IMF IMSI Management Forum
IMF International Monetary Fund
IMO International Maritime Organization
IMPA Independent Music Producers Association
IMS Intersystem Messaging Security
IMSF Intersystem Messaging Security Forum
IMSI International Mobile Subscriber Identity
IMSI International Mobile Station Identity
IMT International Mobile Telecommunications
IMT-2000 International Mobile Telecommunications 2000 (formerly FPLMTS)
IMUX Inverse Multiplexing
INAP Intelligent Networks Application Protocols
INMARSAT International Maritime Satellite Organization
INTELSAT International Telecommunications Satellite Organization
INTSC Improved NTSC Television
INTUG International Telecommunications Users Group
INTV Association of Independent Television Stations
IOT Inductive Output Tube
IP Information Providers
IP Internet Protocol
IP Intelligent Peripheral
IPA Intermediate Power Amplifier
IPO Initial Public Offering
IPPV Impulse Pay Per View
IPR Intellectual Property Right(s)
IPS Inches per Second (linear recording tape speed)
IPTC International Press Telecommunications Council
IRAC Interdepartmental Radio Advisory Committee
IRD Integrated Receiver Decoder (for satellite TV reception)
IrDA The Infrared Data Association
IRE Institute of Radio Engineers (now IEEE)
IRPA International Radiation Protection Association
IRS Insertion Reference Signals (for auto video processing)
IRS Information Receiving Station
IRTF International Radio & Television Foundation
IRTS International Radio & Television Society
IS Interm Standard
ISA Intermodulation Spurious Response Attenuation
ISA Interactive Services Association (formerly VIA)
ISCET International Society of Certified Electronics Technicians
ISD International Standards Development
ISDB Integrated Services Digital Broadcasting
ISDN Integrated Services Digital Network
ISDN Integrated Services Digital Network
ISI InterSymbol Interference (in digital transmission systems)
ISL Inter-satellite Link
ISM Industrial, Scientific & Medical (devises using radio energy
ISM Interactive Storage Media (as optical discs)
ISN International Sunspot Number (For HF Propagation Predictions)
ISO International Satellite Organization
ISO International Organization for Standardization
ISOC Internet Society
ISOG International Satellite Operators Group
ISP Internet Service Provider
ISPC International Sound Program Center (European)
ISRC International Standard Recording Code (code on CD's)
ISS Inter-Satellite Service
ITA Interactive Television Association
ITA Industrial Telecommunications Association
ITA Independent Television Authority (England)
ITAA Information Technology Association of America
ITAC International Telecommunications Advisory Committee (State Dept.)
ITAR International Traffic in Arms Regulations
ITC International Trade Commission
ITC International Television Center (European)
ITC Independent Television Commission (UK)
ITCA International Teleconferencing Association
ITE Information Technology Equipment
ITFS Instructional Television Fixed Service
ITNA Independent Television News Association
ITO Intermediate Transfer Orbit (satellites)
ITPC International Television Program Center (European)
ITS Intelligent Transportation Systems
ITS Institute of Telecommunication Sciences (div. of NTIA)
ITS Inserted Test Signals (in the video signal)
ITS Intelligent Transportation System
ITS International Teleproduction Society
ITS America Intelligent Transport System in the US
ITTA Independent Telephone & Telecommunications Alliance
ITU International Telecommunication Union
ITU-D International Telecommunications Union Development Sector
ITU-R ITU Radiocommuncations Standardization Sector
ITU-R International Telecommunications Union Radiocommuncation Sector
ITU-T International Telecommunication Union Telecom. Standard. Sector
ITU-T ITU Telecommunications Standardization Sector
ITV Industrial/International Television
ITVA International Television Association
ITVB International Television Broadcast/Broadcasting
ITVS Independent Television Service
IVDS Interactive Video Data Service
IVHS Inter-Vehicle Homing System
IVHS Intelligent Vehicle Highway Systems
IVS Integrated Video Services
IWF Inter-Working Functionality
IWF Interworking Function
IWG Informal Working Group
IX Interference (to radio communications circuits)

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