Contec FX-DS540-APDL-U, Руководство пользователя

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8. Appecdix
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FX-DS540-APDL-U
Glossary
SQE(Signal Quality Error) (Heartbeat)
This uses the same signal line as the collision signal for the purpose of notifying the
transmitting terminal that the packets sent from the terminal are sent correctly over the
cable.
PPP(Point to Point Protocol)
A protocol for communicating using TCP/IP over a serial line.
IEEE(Institute of Electrical Electronics Engineers)
"I-triple-E," involved in a wide range of fields from communications and computer to
medicine and biology, with primary activities related to publishing articles and
sponsoring conferences, but also recommending and setting of standards. The
organization sponsoring Committee 802, which is responsible for LAN related matters.
IEEE802.11/ IEEE802.11a/IEEE802.11b/IEEE802.11g
The wireless LAN standard established by the IEEE.
OFDM(Orthogonal Frequency Division Multiplexing)
OFDM is a modulation technique for transmission using different bandwidths. It is
characterized by immunity to fading and multipath.
MIB(Management Information Base)
The value of a MIB is determined by the Internet standard control information
structure.
SNMP(Sinmple Network Management Protcol)
A function necessary for network control, provides three functions: Get (acquire), Set
(modify), and Trap (notify event). Conceived as an easily installable control protocol
that places as little load on the network as possible.
Diversity
A method of using multiple antennas, and selecting the one with the best receiving
conditions.
Router
A device for relaying between LAN's. The router determines data addresses by the
combination of a network address assigned to the network and an individual computer
address. Used particularly in medium-scale and larger LAN systems with very large
number of clients, to reduce traffic (congestion) on communication lines.
Bridge
A device for relaying between LAN's. The bridge determines whether to relay data
based on the address of the computer to which the data is being sent. It can be used to
connect networks having different protocols, or when data for broadcast to all
computers is received, can send this to all connected networks.