Trango Broadband Access5830 - Manual (Page 75)

Glossary
Trango Broadband Wireless — Access5830 User Manual Rev. F page 71
Glossary
A
Antenna Gain The gain of an antenna is a measure of the antenna’s ability to direct or focus radio energy over a region of
space. High gain antennas have a more focused radiation pattern in a specific direction.
AP Access Point. A wireless LAN or WAN data transceiver that uses radio waves to connect a wired network with wireless
stations. It is the Point in a Point-to-Multipoint system.
AP-Centric The Access5830 is a Point to Multipoint system with the access point being the single point and Subscriber Units
being the multi-points. It is sometimes referred to as a cell system. See also Base Station.
Associated Term used to describe an AP and SU which are communicating in a wireless link.
B
Base Station A center of a point-to-multipoint deployment. Also called cell sites. A base station is typically the location of
multiple access points.
Broadcast Packet A single data message (packet) sent to all addresses on the same subnet.
C
CCK Complementary Code Keying. A modulation technique used for wireless WAN transmission at 5.5 and 11 Mbps.
Cell The area of radio range or coverage in which the wireless devices can communicate with the base station. The size of the
cell depends upon the speed of the transmission, the type of antenna used, and the physical environment, as well as other
factors.
D
Data Rates The range of data transmission rates supported by a device. Data rates are measured in megabits per second
(Mbps).
dBi A ratio of decibels to an isotropic antenna that is commonly used to measure antenna gain. The greater the dBi value, the
higher the gain, and the more acute the angle of coverage.
DHCP Dynamic Host Configuration Protocol. A protocol available with many operating systems that automatically issues IP
addresses within a specified range to devices on the network. The device retains the assigned address for a specific
administrator-defined period.
Domain Name The text name that refers to a grouping of networks or network resources based on organization-type or
geography. For example: name.com— commercial, name.edu— educational, name.gov— government, name.net— network
provider (such as an ISP), name.ar— Argentina, name.au— Australia, and so on.
DNS Domain Name Server. A server that translates text names into IP addresses. The server maintains a database of host
alphanumeric names and their corresponding IP addresses.
DSSS Direct Sequence Spread Spectrum. A type of spread spectrum radio transmission that spreads its signal continuously
over a wide frequency band.
E
Ethernet The most widely used wired local area network. Ethernet uses carrier sense multiple access (CSMA) to allow
computers to share a network and operates at 10, 100, or 1000 Mbps, depending on the physical layer used.
EIRP Effective Isotropic Radiated Power. Conducted RF power in dBm plus antenna gain in dBi.
Firmware Software that is programmed on a memory chip.