I

I&A

Identification & Authentication

IBDN

Integrated Building Distribution Network

IBOC

In Band On Channel

IBS

Intelsat Business Services

IC

Integrated Circuit

IC

Inter-exchange Carrier

I-CASE

Integrated Computer -Aided Software Engineering

ICEA

Insulated Cable Engineers Association

ICMP

Internet Control Message Protocol

ICO

Intermediate Circular Orbit

ICW

Interrupted Continuous Wave

ID

IDentity, IDentifier

IDE

Integrated Drive Electronics (interface)

IDF

Intermediate Distribution Frame (tel)

IDF

Interface Definition Language

IDLC

Integrated Digital Loop Carrier

IDP

Internet Data Packet

IDRP

InterDomain Routing Protocol (ISO)

IEC

Inter Exchange Carrier

IEC

International Electrotechnical Comission (Genˆve)

IEE

Institute of Electrical Engineers (London)

IEEE

Institute of Electric and Electronics Engineers (NY)

IETF

Internet Engineering Task Force

IF

Intermediate Frequency

IFL

Inter-Facility Link

IGBT

Insulated Gate Bipolar Transistor

IGES

Initial Graphics Exchange Standard

IGFET

Insulated Gate Field Effect Transistor

IGP

Interior Gateway Protocol

ILD

Injection Laser Diode

ILS

Instrument Landing System

IMA

Interactive Multimedia Association

IMAP

Internet Message Access Protocol

IMD

InterModulation Distortion

IMPATT

IMPact Avalanche Transit Time

IMTS

Improved Mobile Telephone System

IN

Intelligent Network

INA

Integrated Network Architecture

INMARSAT INternational MARitime SATellite

INTELSAT

INternational TELecommunications SATellite organization

I/O

Input/Output

IP

Internetwork Protocol (layer 3)

IPng

Internet Protocol Next Generation (IETF)

IPv6

Internet Protocol Version 6

IPX

Internet Packet Exchange (Netware, layer 3)

IR

InfraRed

IRED

InfraRed Emitting Diode

IRL

Inter Repeater Link (Ethernet)

IRQ

Interrupt ReQuest line (vector)

IS

Interim Standard (EIA)

ISA

Industry Standard Architecture (PC bus)

ISA

Instrumentation Society of America

ISBN

International Standard Book Number

ISCC

Inter-Society Color Council

ISDN

Integrated Services Data Network

IS-IS

Intermediate System-Intermediate System routing exchange protocol (layer 3, ISO)

ISM

Instrumentation, Scientific and Medical (Band)

ISO

International Standards Organization (Genˆve)

ISP

Internet Service Provider

ISR

International Simple Resale

ITR

Integrated Thyristor / Rectifier

ITS90

International Temperature Scale 1990

ITSC

International Telecommunications Standards Conference

ITU

International Telecommunications Union (Genˆve)

ITU-R

ITU Telecommunications Union - Radio Communications Sector

ITU-T

ITU Telecommunications Union - Telecommunications Sector

ITU-TS

ITU Telecommunications Standardization

IVA

Integrated Voice Application

IVDLAN

Integrated Voice/Data Local Area Network (IEEE 802.9)

IVHS

Intelligent Vehicle Highway System