User's Manual

Glossary - 7
provides transport functions, which ensures that the total amount of bytes sent is received correctly at the other end.
UDP is an alternate transport that does not guarantee delivery. It is widely used for real-time voice and video
transmissions where erroneous packets are not retransmitted. IP provides the routing mechanism. TCP/IP is a
routable protocol, which means that all messages contain not only the address of the destination station, but the
address of a destination network. This allows TCP/IP messages to be sent to multiple networks within an
organization or around the world, hence its use in the worldwide Internet. Every client and server in a TCP/IP
network requires an IP address, which is either permanently assigned or dynamically assigned at startup.
TFTP. (Trivial File Transfer Protocol) A version of the TCP/IP FTP (File Transfer Protocol) protocol that has no directory
or password capability. It is the protocol used for upgrading firmware, downloading software and remote booting of
diskless devices.
TKIP. (Temporal Key Integrity Protocol) A wireless encryption protocol that periodically changes the encryption key,
making it harder to decode.
Transmission Control Protocol/Internet Protocol. See TCP/IP.
TLS. (Transport Layer Security) TLS is a protocol that ensures privacy between communicating applications and their
users on the Internet. When a server and client communicate, TLS ensures that no third party may eavesdrop or
tamper with any message. TLS is the successor to the Secure Sockets Layer (SSL).
Trivial File Transfer Protocol. See TFTP.
U
UDP. (User Datagram Protocol) A protocol within the IP protocol suite that is used in place of TCP when a reliable
delivery is not required. For example, UDP is used for real-time audio and video traffic where lost packets are simply
ignored, because there is no time to retransmit. If UDP is used and a reliable delivery is required, packet sequence
checking and error notification must be written into the applications.
W
Warm Boot. A warm boot restarts the MC18 by closing all running programs. All data that is not saved to flash memory
is lost.
WAP. (Wireless Application Protocol) A set of specifications, developed by the WAP Forum, that lets developers using
Wireless Markup Language build networked applications designed for handheld wireless devices. WAP was
designed to work within the constraints of these devices: a limited memory and CPU size, small, monochrome
screens, low bandwidth and erratic connections.
WEP. Wired-Equivalent Privacy protocol was specified in the IEEE 802.11 standard to provide a WLAN with a minimal
level of security and privacy comparable to a typical wired LAN, using data encryption.
WPA. Wi-Fi Protected Access is a data encryption specification for 802.11 wireless networks that replaces the weaker
WEP. It improves on WEP by using dynamic keys, Extensible Authentication Protocol to secure network access,
and an encryption method called Temporal Key Integrity Protocol (TKIP) to secure data transmissions.
WPA2. Wi-Fi Protected Access 2 is an enhanced version of WPA. It uses Advanced Encryption Standard instead of
TKIP.