User's Manual

194 Terms and definitions
Preliminary Layla850 P1B
call centres, video conferencing, PIMs /PDAs, pagers, fax,
office equipment, and smart cards. vCard is specified by IETF.
VGA
Video Graphics Array. Graphics standard introduced by IBM,
having a resolution of 640 x 480 pixels.
VPN
Virtual Private Network. A private network that is configured
within a public network. A VPN appear as private national or
international network to the customer, but physically shares a
backbone trunk with other customers. VPNs enjoy the security
of a private network via access control and encryption, while
taking advantage of the economies of scale and built-in
management facilities of large public networks. Today, there is
tremendous interest in VPNs over the Internet, especially due to
the constant threat of hacker attacks.
WAP
Wireless Application Protocol is a specification for a set of
communication protocols to standardise the way that wireless
devices, such as cellular phones and radio transceivers, can be
used for Internet access, including email, the World Wide Web,
and newsgroups.
WAV
A Wave file is an audio file format, created by Microsoft, that
has become a standard PC audio file format for everything from
system and game sounds to CD-quality audio. A Wave file is
identified by a file name extension of WAV (.wav).
WBXML
Wireless Binary Extensible Markup Language.
WIM
The Wireless Identity Module is a data module for electronic
identity certificates. It can contain both trusted and client
certificates, private keys and algorithms needed for WTLS
handshaking, encryption, decryption, and signature generation.
The WIM module can be placed on a SIM card, called a SWIM
card.
WML
Wireless Markup Language. A markup language used for
authoring services, fulfilling the same purpose as HyperText
Markup Language (HTML) does on the World Wide Web
(WWW). In contrast to HTML, WML is designed to fit small
handheld devices.
WTLS
Wireless Transport Layer Security. Part of WAP, WTLS
provides privacy, data integrity and authentication on transport
layer level between two applications.
W3C
The main standards body for the WWW.