Eion LibraPlus 5845, User Manual, Page: 131 / 140

IEEE Institute of Electrical and Electronics Engineers.
IFIB Intermediate Frequency Interface Board.
Image An image is a collection of configurations or settings for a partic-
ular device. The System Image File in the Access Point contains
a collection of configurations used when the unit is rebooted.
Interference Any signal that tends to hamper the reception of a desired signal.
This is equivalent to jamming, except that interference is not hos-
tile.
IP Address A number assigned to a network node, domain, or subdivision.
An IP Address consists of four numbers in the form
nnn . nnn . nnn . nnn . The first two identify the network and subnet-
work, and the last two identify unique nodes within the network.
No two units may possess the same IP within a LAN.
IP Filter Internet Protocol filtering allows the system administrator to permit
only certain IP addresses to receive or send data using a CPE. This
keeps non-subscribers from using the network.
ISM Industrial, Scientific, and Medical. This is the family of license-
exempt radio bands in North America and some European coun-
tries. These are described in part 15.247 of the FCC regulation
that defines the parameters for use of the ISM band in the U.S.,
including power outputs, spread spectrum, and noninterference.
L
LAN A localized network linking computers, servers, printers and other
peripheral devices. Typical configuration is within buildings or
between closely situated buildings.
Line of Sight (LOS): Free Space An unobstructed straight line between two transmitting devices.
The transmission path is not established by nor dependent upon
reflection, refraction or diffraction. As long as 60 per cent of the
first Fresnel zone is clear, then it may be considered almost equi-
valent to LOS transmission.
Link budget The amount of power, expressed in decibels, needed for a radio
link to work.
Linktest A method of proving a new radio link or troubleshooting an exist-
ing one. Linktest sends data packets in both directions and accu-
mulates statistics on the data that indicate how well the link works.
M
MAC address Media Access Control address. Alphanumeric characters that
uniquely identify a network-connected device.
Management Information Base See Also MIB .
Management Port The DB-9 port on the IDU to which a PC may be attached.
Manager This element is installed on the network’s host computer and is
controlled by the network administrator when used in SNMP.
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Appendices