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I Acronyms

Acronyms that start with Letter I

Acronym	Meaning / Link
I2O	I2O split driver architecture
IA	Intel Architecture or Information Appliance
IAB	Internet Activities Board or Internet Architecture Board
IAD	Integrated Access Device
IBM	International Business Machines or Inferior But Marketable; It's Better Manually; It's Been Malfunctioning; Incontinent Bowel Movement; etc.
IBS	IntelSat Business Service
IC	Integrated Circuit
ICA	Independent Computing Architecture
ICANN	Internet Corporation for Assigned Names and Numbers
ICC	Integrated Circuit Card
ICCID	Integrated Circuit Card ID
ICE	Intrusion Countermeasure Electronics or In-Circuit Emulator
ICMP	Internet Control Message Protocol
ICP	Independent Content Provider
ICR	Intelligent Character Recognition
ICRIS	Integrated Customer Record Information System
ICS	Internet Connection Sharing
IDCT	Inverse Discrete Cosine Transform for digital TV (usually written iDCT)
IDE	Integrated Drive Electronics or Interactive Development Environment
IDF	Intermediate Distribution Frame
IDMS	Integrated Document Management Solutions
IDSL	ISDN Digital Subscriber Line
IEC	International Electrotechnical Commission
IEEE	Institute of Electrical and Electronic Engineers (involved with standards)
IEN	Integrated Enterprise Network
IESG	Internet Engineering Steering Group
IETF	Internet Engineering Task Force
IFM	Intelligent Flow Management
IGES	Initial Graphics Exchange Specification (ANSI standard for CAD/CAM)
IGMP	Internet Group Multicast Protocol or Internet Group Managment Protocol
IGP	Internet Gateway Protocol
IHV	Independent Hardware Vendor
IIOP	Internet Inter-ORB Protocol
IIS	Internet Information Services
ILEC	Incumbent Local Exchange Carrier (see also CLEC)
IMAP	Internet Messaging Access Protocol
IMC	Initial Microcode Load
IMG	As in image (GEM raster file format)
IMP	Interface Message Processor
IMT	Inter-Machine Trunk - High capacity connection between switches (e.g. DMS-250 to DMS-250).
IN	Intelligent Network
INFO	As in .info - INFOrmational web site (See our list of TLDs here)
INTELSAT	International Telecommunications Satellite Organization
InterNIC	Internet Network Information Center
INWG	International Network Working Group
I/O	Input/output
IOS	Inter-Network Operating System or International Organization for Standardization
IP	Internet Protocol
IPC	Internet Proxy Cache or Inter-process Communication
IPL	Initial Program Load or Internet Public Library
IPLC	International Private Leased Circuit
IPMI	Internet Provider Multicast Initiative
IPN	Internet Protocol Number
IPng	Internet Protocol - Next Generation
IPP	Internet Presence Provider
IPS	Internet Presence or Provider Service or In-Plane Switching (touch screen monitor technology)
IPv4	Internet Protocol in use today
IPv6	Internet Protocol in use for Internet2
IPX	Inter-network Packet Exchange
IRAN	Inspect and Repair As Necessary, a maintenance procedure.
IRC	Internet Relay Chat
IRD	Integrated Receiver Decoder
IRF	Inherited Rights Filter
IRQ	Interrupt - Request
IRTF	Internet Research Task Force
IRTOS	I2O Real-Time Operating System
IS	Irrational Screening (I.S. Technology is a Linotype-Hell trademark) or International Standard
ISA	Industry Standard Architecture or Interactive Services Association
ISAM	Indexed Sequential Access Method
ISDN	Integrated Services Digital Network or often not-so-affectionately referred to as "It Still Does Nothing"
ISIS	Internally Switched Interface System or Investigative Support Information System
ISM	Internet Service Manager
ISMF	Interactive Storage Management Facility
ISN	Initial Sequence Number in TCP connections
ISO	International Organization for Standardization (often incorrectly identified as International Standards Organization)
ISP	Internet Service Provider or Instruction Set Processor or In-System Programming
ISPA	Inverted Socket Process Architecture
ISPF/PDF	Interactive System Productivity Facility / Program Development Facility
ISV	Independent Software Vendor
IT	Information Technology
ITIL	Information Technology Infrastructure Library v1, v2, v3
ITS	Internet Telephony Server or Transit Intelligent Transportation Systems
ITU	International Telecommunications Union
ITV	Interactive TeleVision
IVR	Interactive Voice Response
IVRU	Interactive Voice Response Unit
IWM	Integrated Woz Machine
IXC	IntereXchange Carrier

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