Here are the most common telecom acronyms starting with I from the world of computer networking.
← Back to Full Telecom Acronyms| I&M | Installation and Maintenance |
| I/O | Input/Output |
| IA | Information Architecture (IS) |
| IAC | Integrated Access Controller |
| IAC | Intracalling |
| IAG | International Applications Group (of IFIP) |
| IAL | Immediate Action Limits |
| IAL | International Algebraic Language |
| IAM | Integrated Access Module |
| IAML | Intraoffice Matching Loss |
| IAO | Intraoffice |
| IAOG | International Administration Management Domain Operator’s Group |
| IAPR | International Association for Pattern Recognition |
| IAR | Initial Assessment Report |
| IASA | Integrated AUTODIN System Architecture |
| IASC | Information Assets Security Committee |
| IASC | International Association for Statistical Computing |
| IAT | Inter – Application Testing |
| IAW | In Accordance With |
| IBI | Intergovernmental Bureau for Informatics |
| IBM | International Business Machines |
| IBN | Integrated Business Network (Northern Telecom Inc.) |
| IBS | Interim Billing System (FANASD) |
| IBX | InteCom, Inc., switch (trademark) |
| IC | Instruction Counter |
| IC | Integrated Circuit |
| IC | Interexchange Carrier |
| IC | InterLATA Carrier |
| ICA | Installation Configuration Audit |
| ICA | Intelligent Communications Adapter |
| ICA | International Communications Association |
| ICA | Irreversible Corrective Action |
| ICADS | Integrated Code Abuse and Detection System |
| ICARB | Integrated Customer and Revenue Billing |
| ICARR | Integrated Customer and Revenue Reporting |
| ICB | Individual Case Basis (or Based) |
| ICB | Intelligent Channel Bank |
| ICC | Insite Customer Control |
| ICC | International Computer Center |
| ICD | International Code Designator (four-digit prefix/ISO) |
| ICI | Incoming Call Identification |
| ICI | Intercarrier Interface |
| ICI | ISDN Call Identification |
| ICL | International Computers Ltd. |
| ICL | Inter-Remote Switching Module Communication Link(s) |
| ICL | Inter-RSM Communication Link(s) |
| ICLID | Individual Calling Line Identification |
| ICM | Intercom |
| ICM | International Communications Management |
| ICM | International Connections Manager |
| ICMP | Internet Control Message Protocol |
| ICP | International Computer Programs |
| ICSC | Interexchange Carrier Service Center |
| ICT | Incoming Trunk |
| ICT | International Computers and Tabulators |
| ID | Identification |
| ID | Individualized Dialing |
| ID | Isolation Diagrams |
| IDC | Insulation Displacement Connection |
| IDC | International Data Corporation |
| IDCU | Integrated Digital Carrier Unit |
| IDDD | International Direct Distance Dial |
| IDDD | International Direct Distance Dialing |
| IDEN | Incoming Data Enable (signal) |
| IDF | Integrated Demand Forecast |
| IDF | Intermediate Distributing Frame |
| IDFT | Inverse Discrete Fourier Transform |
| IDN | Integrated Digital Network |
| IDN | Integrated Digital Network (NOCC) |
| IDP | Individualized Dialing Plan |
| IDR | Intermediate Data Rate |
| IDS | Integrated Data Store |
| IE | Information Engineering |
| IEEE | Institute of Electrical and Electronic Engineers |
| IEEE-CS | Institute of Electrical and Electronic Engineers – Computer Society |
| IETF | Internet Engineering Task Force |
| IEW | Information Engineering Workbench |
| IEX | Incoming Exclusion Screening |
| IF | Identification Failure |
| IF | Intermediate Frequency |
| IFAC | International Federation of Automatic Control |
| IFB | Invitation for Bid(s) |
| IFCPC | Interoffice Facilities Current Planning Center |
| IFIP | International Federation for Information Processing |
| IFL | Interfacility Link |
| IFM | Installation Force Management |
| IFORS | International Federation of Operational Research Societies |
| IFP | International Facility Planner System |
| IFRB | International Frequency Registration Board |
| IGRP | Interior Gateway Rating Protocol |
| IID | Interlocation Intercom Dialing |
| IIT | Incoming Intercept Trunk |
| ILC | Individual Learning Center |
| ILD | Injection Laser Diode |
| ILLIAC | Illinois Automatic Computer |
| IM | Information Management |
| IM | Installation Manual |
| IM | Intensity Modulation |
| IM | Interface Module |
| IMACS | International Association for Mathematics and Computing in Simulation |
| IMB | Incoming Message Buffer |
| IMC | International Maintenance Center – formerly INOC (NOCC) |
| IMCS | Intelligent Micro Control Store |
| IM-EUS | Information Management (End User Services) |
| IMIA | International Medical Informatics Association |
| IML | Incoming Matching Loss |
| IMLT | Integrated Mechanized Loop Test(ing) |
| IMO | Information Management Operations |
| IMP | Implementation |
| IMP | Implementation Management Plan |
| IMP | Infrastructure Modernization Plan (IS) |
| IMP | Interface Message Processor |
| IMPS | Interactive Modeling and Projection System |
| IMS | Information Management System |
| IMS | Inventory Management System |
| IMS/VS | Information Management System/Virtual Storage |
| IMSL | International Mathematical and Statistical Libraries |
| IMT | Inter-Machine Trunks |
| IMTS | Improved Mobile Telephone Service |
| IN | A type of central office trunk |
| IN | Intelligent Network |
| INA | Internal Network Address |
| INC | International Carrier |
| IND | Individual |
| INDIT | Incoming Trunk Preliminary Digit Interpreter Table |
| INDIV | Individual |
| INDOA | International Operator Assisted |
| INDPS | International Network Development Performance System |
| INE | Intermediate Network Element |
| INETS | Interim National Emergency Telecommunications System |
| INH | Inhibit |
| INL | Internode Link |
| INMS | Integrated Network Management Service |
| INPP | Interim Network Practice and Procedure |
| INT | Integration Test |
| INT | Intercom |
| INT TEST | Integration Testing |
| Intelsat | International Telecommunications Satellite Consortium |
| INTL | International |
| INWATS | Inward Wide Area Telecommunications Service |
| INWG | International Network Working Group |
| I-O channel | Part of the input/output system of a computer |
| IOAMP | Inter – Network Operations, Administration, Maintenance & Provisioning |
| IOC | Input/Output Controller |
| IOC | Input/Output Controller (Northern Telecom Inc. DMS-100) |
| IOC | Integrated Optical Circuit |
| IOC | Interoffice Carrier |
| IOCS | Input/Output Control System |
| IOD | Input/Output Devices (Northern Telecom Inc. DMS-100 subsystem frame) |
| IOE | Input/Output Equipment |
| IOF | Interoffice Facilities |
| IOMI | Input/Output Message Interface |
| IOMI | Input/Output Microprocessor Interface (AT&T) |
| IOP | Input/Output Processor |
| IOS | International Operator Services |
| IOT | Interoffice Trunk |
| IP | Instruction Processor |
| IP | Internal Protocol |
| IPC | Information Processing Center |
| IPCI | Integrated Personal Computer Interface |
| IPL | Initial Program Load |
| IPL | International Private Line |
| IPL | International Private Line |
| ipm | Impulses per Minute |
| ipm | Indications per Minute |
| ipm | Interruptions per Minute |
| IPML | Inter-Peripheral Message Link |
| IPO | Initial Public Offering |
| IPP | Installment Purchase Plan |
| IPR | Information and Problem Reports |
| IPS | Information Processing System |
| IPS | Information Products & Services |
| IPS | Invoice Processing System |
| IPS | Invoice Processing System (B) |
| IPT | Initial Programmer Training |
| IQ | Invoice Query |
| IR | Information Retrieval |
| IR | Infrared |
| IR | Initial Requirements |
| IR | Installation Representative |
| IR | Instruction Register |
| IR | Internal Requirement (IS) |
| IRC | International Record Carrier |
| IRE | Institute of Radio Engineers |
| IRG | Inter-Record Gap |
| IRIA | Institut de Recherche d’Informatique et d’Automatique |
| IRM | Office of Information Resources Management (GSA) |
| IRS | Internal Revenue Service |
| IS | Information Systems |
| IS | In-Service |
| IS | Intraconnect Schematics |
| IS Date | In-Service Date |
| ISA | Instrument Society of America |
| ISA | Integrated Systems Architecture |
| ISA | Inward Selected Access |
| ISAM | Indexed Sequential Access Method |
| ISC | Industrial Security Clearance |
| ISD | Integrated Services Document (IS) |
| ISDD | Incoming Start-to-Dial Delay |
| ISDN | Integrated Services Digital Network |
| ISDNUP | ISDN User Part (also ISUP and IUP) |
| ISDP | Installed System Documentation Package (IS) |
| ISLU | Integrated Services Line Unit |
| ISN | Integrated Systems Network (AT&T) |
| ISO | Information Systems Organization |
| ISO | International Standards Organization |
| ISODATA | Iterative Self-Organizing Data Analysis Technique |
| ISP | Information Strategy Plan |
| ISP | Instruction Set Processor |
| ISPS | Instruction Set Processor Specifications |
| ISR | Information Service Request |
| ISR | Initial Service Requirements |
| ISR | Initial Sizing Report (IS) |
| ISR | Initial Study Request |
| ISS | Integrated Search System |
| ISS | International Settlement System |
| ISS | International Switching Symposium |
| ISSMB | Information Systems Standards Management Board |
| ISTF | Integrated Services Test Function |
| ISUP | ISDN User Part (also ISDNUP and IUP) |
| ITA | International Trade Administration |
| ITAP | Integrated T1 Access Partitioning |
| ITB | Incoming Trunk Busy |
| ITDM | Intelligent Time Division Multiplex |
| ITEM | International Traffic Exchange Module |
| ITF | Integrated Test Facility |
| ITFS | International Toll Free Service |
| ITI | Idle Trunk Indicator |
| ITI | Interactive Terminal Interface |
| ITM | Information Technology Management |
| ITPP | Interim Technical Practice and Procedures |
| ITS | Integrated Telecom Solutions |
| ITS | International Translations System |
| ITS | Invitation to Send |
| ITSE | Incoming Trunk Service Evaluation |
| ITSO | International Telecommunications Satellite Organization |
| ITT | International Telephone and Telegraph |
| ITT FAXPAK | ITT product |
| ITU | International Telecommunications Union |
| ITV | Instructional Television |
| IU | Interface Unit |
| IUP | ISDN User Part (also ISDNUP and ISUP) |
| IVAN | International Value Added Network |
| IVAN | International Value Added Networks |
| IVAS | International Value Added Services |
| IVAS | International Value Added Services |
| IVD | Integrated Voice and Data |
| IVDM | Integrated Voice/Data Multiplexer |
| IVDT | Integrated Voice/Data Terminal |
| IVI | Interactive Video Instruction |
| IVPN | International Virtual Private Network (P) |
| IVR | Interactive Voice Response |
| IW | Inside wire |
| IXC | Interexchange Carrier |
| IXSD | International Telex Subscriber Dialing |
| IXT | Interexchange Channel |
