EnGenius ENH200 User Manual page 96

A process that verifies the identity of a wireless device or end-user. A common form of
authentication is to verify identities by checking a user name and password to allow network
access.
Backbone
A high‐speed line or series of connections that form a major pathway within a network.
Bandwidth
The part of the frequency spectrum required to transmit desired information. Each radio channel
has a center frequency and additional frequencies above and below this carrier frequency that
carry the transmitted information. The range of frequencies from the lowest to the highest used
is called the bandwidth.
Bridge
A wireless device that connects multiple networks that are physically separate or use different
media, but which use similar standards.
Bridge Mode
An Access Pointy in bridge mode can operate as a WLAN bridge that connects two wired network
segments. The peer device also must be in bridge mode. This wireless bridge connection is
equivalent to a Wireless Distribution System (WDS).
CHAP
Challenge Handshake Authentication Protocol. An alternative protocol that uses a
challenge/response technique instead of sending passwords over the wire.
Collision
Interference resulting from two network devices sending data at the same time. The network
detects the collision of the two transmitted packets and discards both of them.
Coverage
The region within which a paging receiver can reliably receive the transmission of paging signals.
Coverage Area
The geographical area that can be served by a mobile communications network or system.
Coverage Hole
An area within the radio coverage footprint of a wireless system where the RF signal level is
below the design threshold. Physical obstructions such as buildings, foliage, hills, tunnels, and
indoor parking garages are usually the cause of coverage holes.
Cyclic Redundancy Check (CRC)
A common technique for detecting data transmission errors.
Dynamic Host Configuration Protocol (DHCP)
A protocol that assigns temporary IP addresses automatically to client stations logging onto an IP
network, so the IP addresses do not have to be assigned manually. The ENH200 contains an
internal DHCP server that automatically allocates IP address using a user-defined range of IP
addresses.
Dead Spot
An area within the coverage area of a WLAN where there is no coverage or transmission falling
off. Electronic interference or physical barriers such as hills, tunnels, and indoor parking garages