Sony Ericsson P990i - Manual (Page 93)

White Paper P990i
93 January 2006
Preliminary version - P1F
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vCal; vCalendar
vCalendar defines a transport and platform-inde-
pendent format for exchanging calendar and
scheduling information for use in PIMs/PDAs and
group schedulers. vCalendar is specified by IETF.
vCard
vCard automates the exchange of personal infor-
mation typically found on a traditional business
card, for use in applications such as Internet mail,
voicemail, Web browsers, telephony applications,
call centres, video conferencing, PIMs /PDAs, pag-
ers, fax, office equipment, and smart cards. vCard
is specified by IETF.
VGA
Video Graphics Array. Graphics standard intro-
duced by IBM, having a resolution of 640 x 480 pix-
els.
VPN
Virtual Private Network.
WAP
Wireless Application Protocol. Handheld devices,
low bandwidth, binary coded, a deck/card meta-
phor to specify a service. A card is typically a unit
of interaction with the user, that is, either presenta-
tion of information or request for information from
the user. A collection of cards is called a deck,
which usually constitutes a service.
WAV
Waveform audio. Format for storing sound.
WBMP
Wireless BitMap. Part of the WAP specifications,
an image format optimized for small mobile
devices.
WBXML
Wireless Binary Extensible Markup Language.
WEP
Wired Equivalent Privacy, a security protocol for
WLAN defined in the 802.11b standard. WEP is
designed to provide the same level of security as
that of a wired LAN. WLANs, which are connected
through a radio link, are more vulnerable to unau-
thorized access than a LAN. WEP provides security
by encrypting the data that is to be passed over the
radio link.
Wi-Fi
Wireless fidelity is a de facto standard certified by
the Wireless Ethernet Compatibility Alliance
(WECA) allowing a WLAN to operate with other
WLAN systems. Wi-Fi is sometimes used to refer to
WLAN in general.
WIM
Wireless Identity Module.
WLAN Ad Hoc Mode
An 802.11 networking framework in which devices
communicate directly with each other, without the
use of an access point (AP). Ad-hoc mode is useful
for establishing a network where wireless infra-
structure does not exist or where services are not
required.
WLAN Infrastructure Mode
An 802.11 networking framework in which devices
communicate with each other by first going
through an Access Point (AP). Most corporate wire-
less LANs operate in infrastructure mode because
they require access to the wired LAN in order to
use services such as file servers or printers. When
one AP is connected to a wired network and a set
of WLAN devices it is referred to as a Basic Service
Set (BSS). An Extended Service Set (ESS) is a set
of two or more BSS that form a single subnetwork.
WML
Wireless Markup Language. A mark-up language
used for authoring services, fulfilling the same pur-
pose as HyperText Markup Language (HTML) does
on the World Wide Web (WWW). In contrast to
HTML, WML is designed to fit small handheld
devices.
WPA and WPA2
Wi-Fi Protected Access, a Wi-Fi standard that was
designed to improve upon the security features of
WEP. The technology is designed to work with
existing Wi-Fi products that have been enabled
with WEP, such as, a software upgrade to existing
hardware. The technology includes two improve-
ments over WEP: