Glossary
GL-4
Cisco Unified Communications Manager Configuration Guide for the Cisco TelePresence System
OL-21851-01
EWS
Exchange Web Services. Managed API that provides an intuitive interface for developing client
applications that use Exchange Web Services. The EWS Managed API provides unified access to
Microsoft Exchange Server resources, while using Microsoft Office Outlook–compatible business
logic. The EWS Managed API communicates with the Exchange Client Access server by means of
EWS
SOAP
messages.
extranet
An extranet is a private network that uses Internet protocols and network connectivity. An extranet can
be viewed as part of a company's intranet that is extended to users outside the company, usually via the
Internet. It has also been described as a “state of mind” in which the Internet is perceived as a way to
do business with a selected set of other companies (business-to-business, B2B), in isolation from all
other Internet users. In contrast, business-to-consumer (B2C) models involve known servers of one or
more companies, communicating with previously unknown consumer users.
An extranet can be understood as an intranet mapped onto the public Internet or some other
transmission system not accessible to the general public, but managed by more than one company's
administrator(s). For example, military networks of different security levels may map onto a common
military radio transmission system that never connects to the Internet. Any private network mapped
onto a public one is a virtual private network (VPN), often using special security protocols.
F
fluorescent lamp
A lamp that uses electricity to excite mercury vapor in a gas that results in an energy that produces
short-wave ultraviolet light. This light then causes a phosphor to fluoresce, producing visible light.
full duplex mode
Transmission of data in two directions simultaneously.
G
guest operating
system
An operating system that is installed and run in a
virtual machine
. In the Cisco TelePresence
environment, the CTS Manager, CTMS, and CTRS are guest operating systems. Before you can install
the guest operating system, you must obtain the installation media for the operating system and
configure the virtual machine to use the CD/DVD drive to access the installation media. See
VMware
.
gzip
GNU zip. Software application used for file compression.
H
half duplex mode
Transmission of data in one direction at a time.
HD
High definition display. High-definition video or HD video refers to any video system of higher
resolution than standard-definition (SD) video, and most commonly involves display resolutions of
1280×720 pixels (720p) or 1920×1080 pixels (1080i/1080p).
