
Glossary
78
1/1551-CRH 102 167 Uen Rev C 2007-04-19
TKIP
Temporal Key Integrity Protocol.
A protocol used for WPA data encryption. It
ensures that a unique master key is
generated for each packet, supports message
integrity and sequencing rules, and supports
re-keying mechanisms. TKIP avoids the
problems of WEP static keys by dynamically
changing data encryption keys.
UDP
User Datagram Protocol.
A connection-less transport service that
dispenses with the reliability services
provided by TCP. UDP gives applications a
direct interface with IP and the ability to
address a particular application process
running on a host via a port number, without
setting up a connection session.
UPnP
Universal Plug and Play.
A networking architecture that provides
compatibility among networking equipment,
software, or between equipment and
software.
UPnP IGD
UPnP Internet Gateway Device.
A standard used by UPnP aware clients, such
as MSN Messenger, to work properly from
behind a NAT.
UMTS
Universal Mobile Telecommunications
Service.
A 3G wireless system that delivers high-
bandwidth data and voice services to mobile
users. UMTS has an air interface based on
WCDMA and a core network based on the
General Packet Radio Service (GPRS).
URL
Uniform Resource Locator.
The address of a resource on the Internet.
USB
Universal Serial Bus.
An interface for connecting peripherals such
as storage devices and printers to a host.
WAN
Wide Area Network.
A network of computers that covers a large
geographical distance. With respect to the
Ericsson W20/21, WAN refers to the Internet.
WCDMA
Wideband CDMA.
The radio access technology for wideband
wireless access supporting 3G services. It
allows very high speed multimedia services
like wireless Internet access and
videoconferencing. WCDMA is also known as
CDMA DS (Direct Sequence).
WEP
Wired Equivalent Privacy.
A method for data encryption on wireless
networks. Data is encrypted into blocks of
either 64 bits length or 128 bits length. The
encrypted data can only be sent and received
by users with access to a private encryption
key.
Wireless
A common term used to describe
telecommunications in which radio waves
(rather than some form of wire) carry the
signal over part or all of the communication
path.
WLAN
Wireless Local Area Network.
A WLAN is a network in which a mobile user
can connect to a LAN through a wireless
(radio) connection. The IEEE 802.11 standard
specifies the technologies for Wireless LANs.