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Description

IGMP

Internet Group Management Protocol

IGRP

Interior Gateway Routing Protocol

IGRS

Intelligent Grouping and Resource Sharing

IIF

IPTV Interoperability Forum

IISP

Incumbent Internet Service Provider

IKE

Internet Key Exchange

ILD

Abbreviation for injection laser diode.

ILEC

Abbreviation for incumbent local exchange carrier. The incumbent or existing franchised local exchange carrier in any given area. [After FCC]

illegal character

A character, or a combination of bits, that is not valid in a given system according to specified criteria, such as with respect to a specified alphabet, a particular pattern of bits, a rule of formation, or a check code. [From Weik '89] Synonyms false character, forbidden character, improper character, unallowable character, unused character.

ILS

Abbreviation for instrument landing system.

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