Nokia E51 - Glossary

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Glossary

Glossary

3G

3rd generation mobile communications.

A digital system for mobile

communications which aims at global

use and provides increased bandwidth.

3G lets a mobile device user access a wide

variety of services, such as multimedia.

Ad-hoc

operating

mode

A WLAN network mode where two or

more devices connect to each other using

WLAN directly without a WLAN access

point.

Cookies

Cookies are little pieces of information,

given by the server to you, to store

information about your visits to a web

site. When you accept cookies, the server

is able to evaluate your use of the web

site, what you are interested in, what you

want to read, and so on.

DNS

Domain name service. An internet service

that translates domain names such as

www.nokia.com into IP addresses such

as 192.100.124.195. Domain names are

easier to remember but this translation is

needed because the internet is based on

IP addresses.

DTMF tones

Dual Tone Multi-Frequency tones. The

DTMF system is used by touch-tone

telephones. DTMF assigns a specific

frequency, or tone, to each key so that it

can easily be identified by a

microprocessor. DTMF tones allow you to

communicate with voice mailboxes,

computerised telephony systems, and so

on.

EAP

Extensible authentication protocol. EAP

plug-ins are used in wireless networks to

authenticate wireless devices and

authentication servers.

EGPRS

Enhanced GPRS. EGPRS is similar to GPRS,

but it enables faster connection. For more

information on the availability of EGPRS

and data transfer speed, contact your

service provider.

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GPRS

General packet radio service. GPRS

enables wireless access for mobile

phones to data networks (network

service). GPRS uses packet data

technology where information is sent in

short bursts of data over the mobile

network. The benefit of sending data in

packets is that the network is occupied

only when sending or receiving data. As

GPRS uses the network efficiently, it

allows for quick data connection setup

and fast data transmission speeds.
You must subscribe to the GPRS service.

For availability and subscription to GPRS,

contact your service provider.
During a voice call, you cannot establish

a GPRS connection, and any existing GPRS

connection is put on hold unless the

network supports dual transfer mode.

GPS

Global positioning system. GPS is a

worldwide radio navigation system.

HSDPA

High-speed downlink packet access.

HSDPA brings high-speed data delivery to

3G terminals, ensuring that users

requiring effective multimedia

capabilities benefit from data rates

previously unavailable because of

limitations in the radio access network.

HTTP

Hypertext transfer protocol. A document

transfer protocol used in the web.

HTTPS

HTTP over a secure connection.

IMAP4

Internet mail access protocol, version 4. A

protocol used for accessing your remote

mailbox.

Internet

access point

An access point is where your device

connects to a network. To use e-mail and

multimedia services or to connect to the

internet and browse web pages, you

must first define internet access points

for these services.

Infrastructure

operating

mode

A WLAN network mode where devices are

connected to WLAN using a WLAN access

point.

PIN

Personal identity number. The PIN code

protects your device from unauthorised

use. The PIN code is supplied with the SIM

card. If the PIN code request is selected,

the code is required each time the device

is switched on. The PIN code must be 4 to

8 digits long.

PIN2

The PIN2 code is supplied with some SIM

cards. The PIN2 code is required to access

certain functions supported by the SIM

card. The length of the PIN2 code is 4 to

8 digits.

POP3

Post office protocol, version 3. A common

mail protocol that can be used for

accessing your remote mailbox.

PUK and PUK2 PIN 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.

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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 internet protocol 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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