Glossary
GL-2
Cisco TelePresence System Release 1.6 Administration Guide
OL-13676-05
display screen icon
System information icons that may be displayed on the Cisco TelePresence System (CTS) display
screen. System information includes call connection status alerts, meeting alerts, and maintenance
alerts.
DMP
Digital Media Player. On the CTS 500, there is an extra input connector on the display. This extra input
connector is for the Digital Media Player.
DN
Directory number.
DNS
Domain Name System. System used on the Internet for translating names of network nodes into
addresses.
DSCP
Differentiated Services Code Point. A field in the header of IP packets for packet classification
purposes.
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
GDR
Gradual Decoder Refresh. Method of gradually refreshing the picture over a number of frames, giving
a smoother, less bursty bitstream. See also
IDR
and
Initialization frames
.
gzip
GNU zip. Software application used for file compression.
H
H.264/MPEG-4 AVC
A standard for video compression. See also
MPEG-4 AVC
and
IDR
.
half duplex mode
Transmission of data in one direction at a time.
HD
High definition display.
I
IAB
Internet Architecture Board. The IAB is chartered both as a committee of the Internet Engineering Task
Force (IETF) and as an advisory body of the Internet Society (ISOC). Its responsibilities include
architectural oversight of IETF activities, Internet Standards Process oversight and appeal, and the
appointment of the
RFC
Editor. The IAB is also responsible for the management of the IETF protocol
parameter registries.