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Acronyms and Abbreviations in Telecommunications - InterConnect ...

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<strong>Acronyms</strong> <strong>and</strong> <strong>Abbreviations</strong> <strong>in</strong> <strong>Telecommunications</strong> 69<br />

IRPA International Radiation Protection Association<br />

IRQ Interrupt Request<br />

IRR Internal Rate of Return (F<strong>in</strong>ancial Modell<strong>in</strong>g)<br />

IRSG Internet Research Steer<strong>in</strong>g Group<br />

IRT Integrated Rural Telematics<br />

IRTA Integrated Regional Telematics Architecture<br />

IRTF Internet Research Task Force<br />

IS In-Service<br />

IS Information Systems<br />

IS Interim St<strong>and</strong>ard (ISO)<br />

IS Intermediate System (ISO)<br />

ISA Industry St<strong>and</strong>ard Architecture<br />

ISAC Information Society Activity Centre (European<br />

Commission)<br />

ISB Independent Side B<strong>and</strong><br />

ISC International Switch<strong>in</strong>g Centre<br />

ISD International Subscriber Diall<strong>in</strong>g (now IDD)<br />

ISDN Integrated Services Digital Network<br />

ISE Integrated Service Eng<strong>in</strong>eer<strong>in</strong>g<br />

ISI In Span Interconnection<br />

IS-IS Intermediate System-to-Intermediate System<br />

ISL Inter-Switch L<strong>in</strong>k<br />

ISM Industrial, Scientific, <strong>and</strong> Medical (applications <strong>and</strong><br />

frequency b<strong>and</strong>s)<br />

ISM Internetwork Status Monitor<br />

ISM ISDN St<strong>and</strong>ards Management<br />

ISN Information Systems Network

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