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21. 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 In a wireless LAN, the ad hoc operating mode allows you to send and receive data from other
devices with compatible wireless LAN support. These functions may require an additional
third party application to work. No wireless LAN access point is required. Simply make the
necessary configurations and start communicating. Ad hoc networking is easy to set up, but
communication is limited to devices that are within range and support compatible wireless
LAN technology.
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, computerized
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.
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 The infrastructure operating mode allows two kinds of communication: wireless devices
communicate with each other through a wireless LAN access point or wireless devices
communicate with a wired LAN device through a wireless LAN access point. The advantage
of the infrastructure operating mode is that you can have more control over network
connections because they pass through an access point. A wireless device can access the
services that are available in a regular wired LAN: company database, e-mail, the Internet,
and other network resources, for example.
PIN Personal identity number. The PIN code protects your device from unauthorized 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.
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