Cisco Prisma II 1550 nm Installation And Operation Manual page 134

Glossary
fields.
EMT
externally-modulated transmitter.
ESD
electrostatic discharge. Discharge of stored static electricity that can damage electronic
equipment and impair electrical circuitry, resulting in complete or intermittent failures.
H
HD
high density.
I
I/O
input/output.
ICIM
intelligent communications interface module.
IP
Internet protocol. A standard that was originally developed by the United States Department
of Defense to support the internetworking of dissimilar computers across a network. IP is
perhaps the most important of the protocols on which the Internet is based. It is the standard
that describes software that keeps track of the internetwork addresses for different nodes,
routes, and outgoing/incoming messages on a network. Some examples of IP applications
include email, chat, and Web browsers.
ITU
International Telecommunications Union.
ITU-grid
Each different wavelength in a wavelength-division multiplexed system will be separated by
a multiple of 0.8 nm. This is sometimes referred to as "100 GHz spacing," which is the
frequency separation, or as the "ITU-Grid." ITU-Grid is named after the International
Telecommunications Union, the standards body that set the figure.
L
LCD
liquid crystal display. A display medium made of liquid crystal. Liquid crystal's reflectance
changes when an electric field is applied. Commonly used in monitors, televisions, cell
phones, digital watches, etc.
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