GlossaryA 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.