PUK and PUK2 Personal Unblocking Key. PUK and PUK2
codes are required to change a blocked PIN
code or PIN2 code, respectively. The length
of the code is 8 digits.
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.
USIM SIM card used in UMTS network.
USSD
command
A service request, such as request to
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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