Fixed Wireless Glossary
- Access Point (AP)
- A Wireless Access Point, also called a Base Station, is 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
- 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.
- 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
- Application Programming Interface.
- Term used to describe an AP and SU which are communicating
in a wireless link.
- Automatic Gain Control
- Automatic Transmit Power Control
- Base Station
- The center of a point-to-multipoint deployment, also called
a cell site. A base station is typically the location of multiple access
- Bit Error Rate
- Band Pass Filter
- Broadcast Packet
- A single data message (packet) sent to all addresses on the
- Category 5 Ethernet cable. For more info, see Cat-5 Ethernet Cable Pin-out.
- Class of Service
- Complementary Code Keying. CCK is a modulation
technique used for wireless WAN transmission at 5.5 and 11 Mbps.
- 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.
- Customer Premise Equipment (CPE)
- Communications equipment that resides and operaters at the customer's place of operation. The CPE for Trango point-to-multipoint systems is the subscriber unit. See also Subscriber Unit.
- Data Rates
- The range of data transmission rates supported by a device.
Data rates are measured in megabits per second (Mbps).
- 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.
- 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.
- Directional Antenna
- A directional antenna transmits a signal in a particular direction towards the receiver similar to a beam of light from a flashlight.
- 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.
- 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.
- Direct Sequence Spread Spectrum. A type of spread
spectrum radio transmission that spreads its signal continuously over a wide
- European-Carrier 1
- 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.
- Effective Isotropic Radiated Power. Conducted RF
power in dBm plus antenna gain in dBi.
- Federal Communication Commission
- Forward Error Correction
- File Server
- A repository for sharing files, mail, and programs over a
local area network (LAN).
- Software that is programmed on a memory chip.
- Fixed Wireless
- Fixed wireless networks connect two fixed locations (e.g., buildings, towers etc.) with either point-to-point or point-to-multipoint wireless radios and delivers data, voice, video, and other encoded digital or analog communications between the two or more sites.
- Field Programmable Gate-Array
- File Transfer Protocol. A member of the TCP/IP suite of protocols, used to copy files between two computers through the Internet. Both computers must support their respective FTP roles: one must be an FTP client and the other an FTP server.
- A device that connects two otherwise incompatible networks
- Gigahertz. One billion cycles per second. A unit of
measure for wireless frequency.
- Gigabit Ethernet
- HyperText Transfer Protocol (HTTP) is the set of
rules for exchanging files (text, graphic images, sound, video, and other
multimedia files) on the World Wide Web. HTTP is an application protocol
relative to the TCP/IP suite of protocols, which are the basis for information
exchange on the Internet.
Essential concepts that are part of HTTP include the
principal idea that files can contain references to other files whose selection
elicit additional transfer requests. Any Web server machine contains, in addition
to the HTML and other files it can serve, an HTTP daemon — a program that is
designed to wait for HTTP requests and handle them when they arrive. Your Web
browser is an HTTP client, sending requests to server machines. When the
browser user enters file requests by either "opening" a Web file
(typing in a Uniform Resource Locator or URL) or clicking on a hypertext link,
the browser builds an HTTP request and sends it to the Internet Protocol
address indicated by the URL. The HTTP daemon in the destination server machine
receives the request and, after any necessary processing, the requested file is
returned. Default TCP port is 80.
- HyperText Transfer Protocol Daemon
- HyperText Transfer Protocol Secure
- Indoor Unit
- Institute of Electrical and Electronic Engineers. The
IEEE is a professional society that serves electrical engineers through its
publications, conferences, and standards development activities. It is the body
responsible for the Ethernet 802.3 and wireless LAN 802.11 specifications.
- Intermediate Frequency
- The wired Ethernet network.
- Internet Protocol.
- IP Address
- The Internet Protocol 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.
- 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.
- Internet Service Provider. A network operator that delivers Internet access services to its end-customers. See also WISP.
- A theoretical antenna that radiates its signal 360 degrees
both vertically and horizontally in a perfect sphere.
- Local Area Network. A computer communications network usually with a central server that connects a number of computers so that users can share programs and files, usually users confined within a local geographical area, such as a home, office or small group of buildings. See WLAN.
- Light-emitting Diode
- Line Interface Unit
- 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.
- Metropolitan Area Network. A communications network, which covers a geographic area such as a city or suburb. See also WMAN.
- Megabits per second. A measure of data transmission speed — 1,000,000 bits per second or approximately 125,000 characters per second
- Approximately one million bits. A unit of measure for an amount of data.
- Any of several techniques for combining user information
with a transmitter's carrier signal.
- Mean Square Error
- Master Unit, is a wireless LAN data transceiver that
uses radio waves to connect a wired network with a remote station.
- The echoes created as a radio signal bounces off of
- Multicast Packet
- A single data message (packet) sent to multiple addresses.
- Outdoor Unit
- Operation Mode
- Omni-directional Antenna
- An omni-directional antenna is a primarily circular rod-shaped antenna that radiates the radio frequency in all directions from the antenna, like ripples caused by a rock thrown in a pond.
- Operating System
- A basic message unit for communication across a network. A packet
usually includes routing information, data, and sometimes error detection
- A Series of microcontrollers a product of the Microchip
Point-to-MultiPoint (PtMP / PMP)
- A network topology that connects a single endpoint to two or more endpoints. For example, in an ISP to customer premise scenario, one access point can distribute data to multiple subscribers
Point-to-Point (PtP / PTP / P2P)
- The simplest of network topologies, a direct link connecting one endpoint to another.
Power over Ethernet (PoE)
- Power over Ethernet (PoE) is a technology that powers a remote Ethernet device by transfering electrical power over the same standard twisted-pair Ethernet cable that is used to also send Ethernet data communications.
- A set of rules which govern communication between two network devices. Using a network medium (i.e. wireless, copper wire, etc.), computers pass information from one to another in an organized fashion using these communication rules. Example protocols:
TCP/IP, IPX/SPX, Apple Talk, Net BEUI, HTTP, FTP, etc.
Protocol Duties Include:
- The type of error checking to be used
- Data compression method, if any
- How the sending device will indicate that it has finished sending a message
- How the receiving device will indicate that it has received a message
- Quadrature Amplitude Modulation
- Quality of Service
- Quadrature Phase Shift Keying
- 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.
- Radio Frequency. A generic term for wireless radio-based
- Registered Jack - 45
- Recommended Standard 232
- Receive Signal Strength Indicator
- Remote Unit, is a wireless LAN data transceiver that
uses radio waves to connect a remote station with a wired network.
- Simple Network Management Protocol. A network protocol used to manage TCP/IP networks. In Windows, the SNMP service is used to provide status information about a host on a TCP/IP network
- 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.
- Secure Shell
- Subscriber Unit (SU)
- A subscriber unit (also called subscriber module) is a broadband radio installed at a business or residential customer's location via a wireless access point to deliver broadband Internet access. Also see Customer Premise Equipment (CPE).
- System Information
- T1 T
- 1.544 Mbps telephony carrier 1
- Transmission Control Protocol. A connection oriented reliable protocol that guarantees the delivery and correct sequencing of delivered packets.
- Time-Division Multiplexing
- Threshold to Interference
- Is a terminal-emulation protocol that is widely used on the Internet to log on to network computers. Telnet also refers to the through a command line interface (CLI) application that uses the Telnet protocol for users who log on from remote locations.
- Trivial File Transfer Protocol
- Trivial File Transfer Protocol Daemon
- Transmit Power
- The power level the radio transmits from its antenna port.
- 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.
- Regulations for UNII devices operating in the 5.15 to 5.25 GHz frequency band.
- Regulations for UNII devices operating in the 5.25 to 5.35 GHz frequency band.
- 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.
- User Datagram Protocol. A TCP complement that offers a connectionless datagram service that guarantees neither delivery nor correct sequencing of delivered packets (much like IP).
- Virtual Local Area Network. See LAN.
- Wide Area Network. A communications network, which covers wide geographic areas such as states and countries. The size of a network is limited due to size and distance constraints. However, LAN networks may be connected together to create a WAN. See also WMAN, WLAN.
- Wireless Wide Area Network. A LAN that is built using wireless technology. See LAN.
- A computing device with an installed client adapter.
- Wireless Internet Service Provider. A network operator, or ISP that utilizes mostly wireless radio equipment to deliver Internet access services to its end-customers. See ISP.
- Wireless Wide Area Network. A WAN that is built using wireless technology. See WAN.