Glossary 161
ID: um_t2gateway CP560 DVB-T2 Gateway User’s Manual Rev. 2.2 (3686)
Appendix A Glossary
$label ch_glossary1000Base-T
The term for the electrical Gigabit Ethernet interface. This is the most common interface
for Gigabit Ethernet. Most Gigabit-enabled PCs and equipment support this interface.
3G-SDI
3Gbit High Definition - Serial Digital Interface. 3G-SDI, consisting of a single 2.970 Gbit/s
serial link, is standardized in SMPTE 424M that can replace the dual link HD-SDI.
ARP
Address Resolution Protocol. A protocol used to “resolve” IP addresses into underlying
Ethernet MAC addresses.
ATSC
Advanced Television Systems Committee. An American organisation working with stan-
dardisation of digital television broadcasts, primarily in the US but also in Asia and other
parts of the world.
DiffServ
Differentiated Services. A mechanism used on layer 3 - e.g. the IP layer - to differentiate
between traffic of various types. DiffServ is based on the ToS field and provides a mecha-
nism for the network to give e.g. video traffic higher priority than other traffic (for example
Internet traffic).
DVB
Digital Video Broadcasting. The European consortium defining standards for transmission
of digital TV broadcasts, primarily in Europe.
DVB ASI
Digital Video Broadcasting Asynchronous Serial Interface. A common physical interface
for transmission of MPEG2 Transport Streams (i.e. MPEG2-compressed video) over a serial
interface, typically coaxial cables.
DWDM
Dense Wavelength Division Multiplexing. A mechanism to increase the bandwidth avail-
able in an optical fiber by adding extra signals using different optical wavelengths (colours).
Ethernet
Originally a 10 Mbit/s shared medium network type developed by Xerox. Later trans-
formed into an official standard. Nowadays, most Ethernet networks are based on full
duplex connections over twisted pair cables. Ethernet switches in the network take care
of routing Ethernet frames between nodes. The speeds now supported are 10 Mbit/s, 100
Mbit/s and 1000 Mbit/s. 10Gigabit/s Ethernet networks are now emerging.
FEC
Forward Error Correction. A mechanism to protect data transmission by adding redundant
To Next Page
Loading...