IPDP - installation and operating instructions
6
1.2 Terminology
• Ethernet is a family of frame-based computer networking technologies for local area
networks (LANs).
• A local area network (LAN) is a computer network covering a small physical area,
like a home, office, or small group of buildings, such as a school, or an airport
• 10BASE-T runs over four wires (two twisted pairs) on a Category 3 or Category 5
cable.
• 100BASE-TX Uses two pairs, but requires Category 5 cable (FastEthernet)
• Twisted pair cabling is a form 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.
• UTP (unshielded twisted pair) cable is not surrounded by any shielding.
• STP (shielded twisted pair) cables are often shielded in attempt to prevent
electromagnetic interference.
• The World Wide Web (commonly abbreviated as the "Web") is a system of
interlinked hypertext documents accessed via the Internet.
• Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed,
collaborative, hypermedia information systems.
• Universal Serial Bus (USB) is a serial bus standard to connect devices to a host
computer.
• A video codec is a device or software that enables video compression and/or
decompression for digital video. H.264 is a standard for video compression, and is
equivalent to MPEG-4 AVC. H.263 is a video codec standard originally designed as
a low-bitrate compressed format for videoconferencing. MPEG-4 is collection of
methods defining compression of audio and visual (AV) digital data.
• JPEG is a commonly used method of compression for photographic images.
• Voice over Internet Protocol (VoIP) is a general term for a family of transmission
technologies for delivery of voice communications over IP networks such as the
Internet.
• The Internet Protocol Suite (commonly known as TCP/IP) is the set of
communications protocols used for the Internet
• An Internet Protocol (IP) address is a numerical identification and logical address
that is assigned to devices participating in a computer network utilizing the Internet
Protocol for communication between its nodes.
• Dynamic Host Configuration Protocol (DHCP) is a network application protocol
used by devices (DHCP clients) to obtain configuration information for operation in
an Internet Protocol network.
• The Internet is a global system of interconnected computer networks that use the
standardized Internet Protocol Suite (TCP/IP).
• An intranet is a private computer network that uses Internet technologies
• Power over Ethernet or PoE technology describes a system to transfer electrical
power, along with data, to remote devices over standard twisted-pair cable in an
Ethernet network
Network Time Protocol (NTP), a means of synchronizing clocks over a computer
network.
VoIPon www.voipon.co.uk
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