Digi XBee Manual

XBee® Wi-Fi RF Modules
© 2013 Digi International, Inc. 120
12.Glossary of Terms
Definitions
Local Host
A device which is electrically connected to an XBee. Typically this is a microcontroller connected to
the serial pins of the module.
MAC address
A unique network identifier. All network devices are required to have their own unique
MAC address. The MAC address is on a sticker on your Digi device server. The number
is displayed as 12 hexadecimal digits, usually starting with 00:40:9D.
Network Client
A device which communicates with an XBee through the 802.11 network.
Static IP address assignment
The process of assigning a specific IP address to a device. Contrast with assigning a
device through Dynamic Host Configuration Protocol (DHCP), or Automatic Private IP
Addressing (APIPA or Auto-IP).
TCP
See Transmission Control Protocol.
Temporal Key Integrity Protocol (TKIP)
Part of the IEEE 802.11i encryption standard for wireless LANs. TKIP is the next
generation of the Wired Equivalent Privacy (WEP), which is used to secure 802.11 wireless LANs.
TKIP provides per-packet key mixing, a message integrity check and a
re-keying mechanism, and addresses several design shortcomings of the original WEP.
Transmission Control Protocol (TCP)
A set of rules (protocol) used along with the Internet Protocol (IP) to send data in the
form of message units between computers over the Internet. While IP handles the actual
delivery of the data, TCP handles keeping track of the individual units of data (called
packets) that a message is divided into for efficient routing through the Internet.
For example, when an HTML file is sent to you from a Web server, the Transmission
Control Protocol (TCP) program layer in that server divides the file into one or more
packets, numbers the packets, and then forwards them individually to the IP program
layer. Although each packet has the same destination IP address, it may get routed
differently through the network. At the other end (the client program in your computer),
TCP reassembles the individual packets and waits until they have arrived to forward
them to you as a single file.
TCP is known as a connection-oriented protocol, which means that a connection is
established and maintained until such time as the message or messages to be exchanged
by the application programs at each end have been exchanged. TCP is responsible for
ensuring that a message is divided into the packets that IP manages and for
reassembling the packets back into the complete message at the other end. In the Open

Digi XBee Specifications

General

Brand	Digi
Model	XBee
Category	Control Unit
Language	English