Trango Broadband Access5830 User Manual
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Glossary
Trango Broadband Wireless — Access5830 User Manual Rev. F
page 72
G
Gateway A device that connects two otherwise incompatible networks together.
GHz Gigahertz. One billion cycles per second. A unit of measure for frequency.
IP Address The Internet Protocol (IP) address of a station, or the layer three address used in routing packets.
IP Subnet Mask The number used to identify the IP subnetwork, indicating whether the IP address can be recognized on the
LAN, or if it must be reached through a gateway. Number is expressed in a form similar to an IP address (i.e. 255.255.255.0).
ISM Industrial Scientific Medical. FCC designation for various parts of the radio spectrum originally allocated for unlicensed
use. For the Access5830, it refers to the 5.725 to 5.850 frequency band.
Isotropic A theoretical antenna that radiates its signal 360 degrees both vertically and horizontally in a perfect sphere.
M
MAC Address Media Access Control Address. A unique 48-bit number used in Ethernet data packets to identify an Ethernet
device, such as an Access Point, your client adapter, or a Subscriber Unit.
Modulation Any of several techniques for combining user information with a transmitter’s carrier signal.
Multipath The echoes created as a radio signal bounces off of physical objects.
Multicast Packet A single data message (packet) sent to multiple addresses.
P
Packet A basic message unit for communication across a network. A packet usually includes routing information, data, and
sometimes error detection information.
R
Range A linear measure of the distance that a transmitter can send a signal.
Receiver Sensitivity A measurement of the weakest signal a receiver can receive and still correctly translate it into data.
RF Radio frequency. A generic term for radio-based technology.
S
Spread Spectrum A radio transmission technology that spreads the user information over a much wider bandwidth than
otherwise required in order to gain benefits such as improved interference tolerance and unlicensed operation.
T
Transmit Power The power level the radio transmits from its antenna port.
U
UNII Unlicensed National Information Infrastructure. Regulations for UNII devices operating in the 5.15 to 5.35 GHz and
5.725 to 5.825 GHz frequency bands.
UNII-1
Regulations for UNII devices operating in the 5.15 to 5.25 GHz frequency band.
UNII-2
Regulations for UNII devices operating in the 5.25 to 5.35 GHz frequency band.
UNII-3
Regulations for UNII devices operating in the 5.725 to 5.825 GHz frequency band.
Unicast Packet
A single data message (packet) sent to a specific IP address.