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278 AT-TQ2403 - Management Software - User's Guide
frequency hopping spread spectrum, direct sequence spread spectrum, etc.).
The optional Traffic Indication Map (TIM) identifies stations, using power saving mode, that have data
frames queued for them.
Bridge
A connection between two local area networks (LANs) using the same protocol, such as Ethernet or IEEE
802.1x.
Broadcast
A Broadcast sends the same message at the same time to everyone. In wireless networks, broadcast usually
refers to an interaction in which the access point sends data traffic in the form of IEEE 802.1x Frames to all
client stations on the network.
Some wireless security modes distinguish between how unicast, multicast, and broadcast frames are
encrypted or whether they are encrypted.
See also Unicast and Multicast.
Broadcast Address
See IP Address.
BSS
A basic service set (BSS) is an Infrastructure Mode Wireless Networking Framework with a single access
point. Also see extended service set (ESS) and independent basic service set (IBSS).
BSSID
In Infrastructure Mode, the Basic Service Set Identifier (BSSID) is the 48-bit MAC address of the wireless
interface of the Access Point.
C
CCMP
Counter mode/CBC-MAC Protocol (CCMP) is an encryption method for 802.11i that uses AES. It employs
a CCM mode of operation, combining the Cipher Block Chaining Counter mode (CBC-CTR) and the
Cipher Block Chaining Message Authentication Code (CBC-MAC) for encryption and message integrity.
AES-CCMP requires a hardware coprocessor to operate.
CGI
The Common Gateway Interface (CGI) is a standard for running external programs from an HTTP server.
It specifies how to pass arguments to the executing program as part of the HTTP request. It may also define
a set of environment variables.
A CGI program is a common way for an HTTP server to interact dynamically with users. For example, an
HTML page containing a form can use a CGI program to process the form data after it is submitted.
Channel
The Channel defines the portion of the radio spectrum the radio uses for transmitting and receiving. Each
802.11 standard offers a number of channels, dependent on how the spectrum is licensed by national and