Used Terminology - Alpha Technologies IP Bell – 01 User And Installation Manual

1.2 Used terminology

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Ethernet is a family of frame-based computer networking technologies
for local area networks (LANs
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LAN - a local area network (LAN) is a computer network covering a
small physical area, like a home, office, or small groups of buildings,
such as a school, or an airport.
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10Base-T – 10 Mbit/s , it uses 8 position modular connectors, usually
called RJ45 in the context of Ethernet over twisted pair. The cables
usually used are four-pair twisted pair cable (though 10BASE-T and
100BASE-TX only actually require two of the pairs). Each of the
standards support both full-duplex and half-duplex communication.
According to the standards, they all operate over distances of up to
100 meters.
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100Base-TX – so called Fast Ethernet, two pairs of UTP or STP
cable, category 5.
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Twisted pair cabling is a type of wiring in which two conductors (the
forward and return conductors of a single circuit) are twisted together
for the purposes of canceling out electromagnetic interference (EMI)
from external sources; for instance, electromagnetic radiation from
unshielded twisted pair (UTP) cables, and crosstalk between
neighboring pairs.
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UTP, Unshielded Twisted Pair
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STP, Shielded Twisted Pair – the cabling includes metal shielding over
each individual pair of copper wires. This type of shielding protects
cable from external EMI (electromagnetic interferences).
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WEB - World Wide Web (WWW, or web) – a world-wide application of
HTTP internet protocol
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HTTP (Hypertext Transfer Protocol) is an internet protocol used
originally for exchanging hypertext documents in HTML format.
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USB (Universal Serial Bus) – modern way of connecting external
devices to the computer.
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Video codek („coder and decoder") - compression H.263 is derived
from MPEG-4, H.264 is a coder for MPEG-4 AVC format. MPEG-4 is a
type of video compression – decreasing of data stream video
sequence
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JPEG is a standard method of loss compression used for saving digital
images
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Voice over Internet Protocol (VoIP) is a technology enabling
transmission of digitalized voice inside the packej of protocols family
UDP/TCP/IP via komputer network. I tis used for making phone calls
via Internet, Intranet or any other kind of data connection
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TCP/IP contains a set of protocols for communication in the computer
network and it is the main protocol of Internet
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IP Bell
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