Nokia E5-00 User Manual page 167

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UMTS
Universal Mobile
Telecommunications
System. UMTS is a 3G mobile
communication system.
Besides voice and data,
UMTS enables audio and
video delivery to wireless
devices.
When you use your device in
GSM and UMTS networks,
multiple data connections
can be active at the same
time, and access points can
share a data connection. In
the UMTS network, data
connections remain active
during voice calls. You can,
for example, browse the
web faster than previously
possible while
simultaneously speaking on
the phone.
UPIN
PIN code used in UMTS
network.
UPUK
UPIN Unblocking Key. UPUK
code is required to change a
blocked UPIN code or PIN2
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code. The length of the code
is 8 digits.
USIM
SIM card used in UMTS
network.
USSD
A service request, such as
comman
request to activate an
d
application or configure
various settings remotely,
that you can send to your
operator or service provider
with your device.
VPN
Virtual private network.
VPN creates a secure
connection to compatible
corporate intranet and
services, such as e-mail.
WAP
Wireless application
protocol. WAP is an
international standard for
wireless communication.
WEP
Wired equivalent privacy.
WEP is an encryption
method that encrypts data
before it is transmitted in
WLAN.
WLAN
Wireless local area network.
Glossary 167

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