Glossary
GL-4
Cisco TelePresence System Release 1.6 Administration Guide
OL-13676-05
light temperature
A theoretical means of describing visible light that is determined by comparing its hue with a heated
black-body radiator. The lamp’s color temperature is the temperature in kelvins at which the heated
black-body radiator matches the hue of the lamp.
LTRP
Long Term Reference Picture.
M
MAC address
Media Access Control. A hardware address that uniquely identifies each node of a network.
MIDlets
Cisco TelePresence System Enhanced Phone User Interface. Cisco Unified IP Phone 7970 Series
interface with the Cisco TelePresence System. See
Cisco Unified Communications Manager
Configuration Guide for the Cisco TelePresence System
for more information.
MPEG-4 AVC
A patented collection of methods defining compression of audio and visual (AV) digital data. See also
H.264/MPEG-4 AVC
and
IDR
.
MXE
Media eXperience Engine.
P
P-frame
An easily compressible video frame type. A video frame is compressed using different algorithms that
allow varied amounts of data compression. These different algorithms for video frames are called
picture types or frame types. The three major picture types used in the different video algorithms are I,
P, and B.
PiP
Presentation-in-picture. Data or graphics content sharing through an external monitor known as
presentation-in-picture (PIP) format for space-constrained offices. You can toggle the position of the
PiP between center, left, or right locations on the screen. PiP is not present on the CTS 3000 or
CTS 3200 series.
PoE
Power over Ethernet.
primary codec
The primary codec is the primary unit; it communicates with secondary units, sends and receives
packets on the uplink network. It contains an onboard Gigabit Ethernet switch. For example, in a
CTS 3000 or CTS 3200 system, the primary codec controls two secondary codecs as well as many
system components and the graphical user interfaces. In a Cisco TelePresence 1000, it controls all
system functions.
PCB
Printed circuit board.
R
RFC
Request for Comments. Document series used as the primary means for communicating information
about the Internet. Some RFCs are designated by the
IAB
as Internet standards.
