MeshLinx MWI-5000 User Guide
MESHLINX CONFIDENTIAL
9
EIRP:
The Effective Isotropic Radiated Power of a transmitter is the power that the
transmitter appears to have if the transmitter’s antenna was an isotropic radiator,
i.e., if it radiated equally in all directions. By virtue of the gain of a radio antenna—
omni-directional or directed—or a dish, a beam is formed that preferentially
transmits the energy in one direction. The EIRP is determined from the product of
the gain and the transmitter power.
Ethernet:
Ethernet is the most widely installed local area network (LAN)
technology. Specified in a standard, IEEE 802.3, Ethernet was originally developed
by Xerox and then developed further by Xerox, DEC, and Intel. An Ethernet LAN
typically uses coaxial cable or special grades of twisted-pair wires. Ethernet is also
used in wireless LANs. The most commonly installed Ethernet systems are called
10-BaseT and provide transmission speeds up to 10Mbps. Devices are connected to
the cable and compete for access using a Carrier Sense Multiple Access with
Collision Detection (CSMA/CD) protocol.
Fast Ethernet or 100-BaseT provides transmission speeds up to 100Mbps and is
typically used for LAN backbone systems, supporting workstations with 10-BaseT
cards. Gigabit Ethernet provides an even higher level of backbone support at
1000Mbps (1 gigabit or 1 billion bits per second). 10Gbps Ethernet provides up to
10 gigabits per second.
HTTP:
The Hypertext Transfer Protocol (HTTP) is a set of rules for exchanging
files (text, graphic images, sound, video, and other multimedia files) on the World
Wide Web. Relative to the TCP/IP suite of protocols (which are the basis for
information exchange on the Internet), HTTP is an application protocol.
Hub:
In data communications, a hub is a place of convergence where data arrives
from one or more directions and is forwarded out in one or more other directions. A
hub usually includes a switch of some kind. (And a product that is called a "switch"
could usually be considered a hub as well.) The distinction seems to be that the hub
is the place where data comes together and the switch is what determines how and
where data is forwarded from the place where data comes together. Regarded in its
switching aspects, a hub can also include a router.
IEEE:
Institute of Electrical and Electronics Engineers. The IEEE describes itself
as the world’s largest professional society. The IEEE fosters the development of
standards that often become national and international standards, such as 802.11.
IP:
The Internet Protocol (IP) is the method or protocol by which data is sent from
one computer to another on the Internet. Each computer (known as a host) on the
Internet has at least one IP address that uniquely identifies it from all other
computers on the Internet. When you send or receive data (for example, an e-mail
note or a Web page), the message gets divided into little chunks called packets.
Each of these packets contains both the sender's Internet address and the receiver's
address. Any packet is sent first to a gateway computer that understands a small
part of the Internet. The gateway computer reads the destination address and
forwards the packet to an adjacent gateway that in turn reads the destination
address and so forth across the Internet until one gateway recognizes the packet as
belonging to a computer within its immediate neighborhood or domain. That
