User manual

www.cooperbussmann.com/wirelessresources
Cooper Bussmann 245U-E Wireless Ethernet Modem & Device Server User Manual
103Rev Version 2.19
Switch
A type of hub that efficiently controls the way multiple devices use the same network so
that each can operate at optimal performance. A switch acts as a networks traffic cop.
Rather than transmitting all the packets it receives to all ports as a hub does, a switch
transmits packets to only the receiving port.
TCP
Transmission Control Protocol (TCP) is a protocol used along with the Internet Protocol
(IP) to send data in the form of individual units (called packets) between computers over
the Internet. While IP takes care of handling the actual delivery of the data, TCP takes care
of keeping track of the packets that a message is divided into for efficient routing through
the Internet. For example, when a webpage is downloaded from a web server, the TCP
program layer in that server divides the file into 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,
TCP reassembles the individual packets and waits until they have all arrived to forward
them as single message.
TCP/IP
The underlying technology behind the Internet and communications between computers
in a network. The first part, TCP, is the transport part, which matches the size of the
messages on either end and guarantees that the correct message has been received. The
IP part is the user’s computer address on a network. Every computer in a TCP/IP network
has its own IP address that is either dynamically assigned at startup or permanently
assigned. All TCP/IP messages contain the address of the destination network as well as
the address of the destination station. This enables TCP/IP messages to be transmitted to
multiple networks (subnets) within an organization or worldwide.
VoIP
Voice over Internet Protocol (VoIP). Voice transmission using Internet Protocol to create
digital packets distributed over the Internet. VoIP can be less expensive than voice
transmission using standard analog packets over POTS (plain old telephone service).
VPN
Virtual private network (VPN) is a type of technology designed to increase the security
of information transferred over the Internet. VPN can work with either wired or wireless
networks, as well as with dial-up connections over POTS. VPN creates a private encrypted
tunnel from the end user’s computer, through the local wireless network, through the
Internet, all the way to the corporate servers and database.
WAN
Wide area network (WAN) is a communication system of connecting PCs and other
computing devices across a large local, regional, national or international geographic area.
Also used to distinguish between phone-based data networks and Wi-Fi. Phone networks
are considered WANs and Wi-Fi networks are considered wireless local area networks
(WLANs).
WEP
Wired Equivalent Privacy (WEP) is basic wireless security provided by Wi-Fi. In some
instances, WEP may be all a home or small-business user needs to protect wireless data.
WEP is available in 40-bit (also called 64-bit), or in 108-bit (also called 128-bit) encryption
modes. As 108-bit encryption provides a longer algorithm that takes longer to decode, it
can provide better security than basic 40-bit (64-bit) encryption.
Wi-Fi
Wireless fidelity (Wi-Fi) is an interoperability certification for wireless local area network
(LAN) products based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11
standard.