Glossary
SIP
Session Initiation Protocol. SIP is used for
creating, modifying, and terminating
certain types of communication sessions
with one or more participants.
SSID
Service set identifier. SSID is the name that
identifies the specific WLAN.
Streaming
Streaming audio and video files means
playing them directly from the web without
downloading them first to your device.
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 code.
The length of the code is 8 digits.
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USIM
SIM card used in UMTS network.
USSD
A service request, such as request to
command
activate an application or configure various
settings remotely, that you can send to your
operator or service provider with your
device.
VoIP
Voice over IP technology. VoIP is a set of
protocols that facilitate phone calls over an
IP network, such as the internet.
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.
WPA
Wi-Fi Protected Access. Security method for
WLAN.
WPA2
Wi-Fi Protected Access 2. Security method
for WLAN.
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