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Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y

LAN - See local area network.

Laser - From the acronym for "Light Amplification by Stimulated Emission of Radiation." A laser usually consists of a light-amplifying medium placed between two mirrors. Light not perfectly aligned with the mirrors escapes out the sides, but light perfectly aligned will be amplified. One mirror is made partially transpar-ent. The result is an amplified beam of light that emerges through the partially transparent mirror.

LATA - See local access transport area.

Local exchange carrier (LEC) - A local telephone company. LECs provide telephone service for phone calls originating and terminating within a single LATA.