18
Glossary
802.11b The WLAN standard. It enables the data transmission speed of up to 11 Mbit/s at the 2.4 GHz
frequency. WLAN is used for computer and Officebox connection.
802.11g The WLAN standard. It enables the data transmission speed of up to 54 Mbit/s (typically 22 Mbit/s) at
the 2.4 GHz frequency. The standard is compatible with 802.11b and it is considered as its successor.
It enables the fast data transmission between computer and Officebox at a distance of up to 100 meters
from the base station.
DHCP Dynamic Host Configuration Protocol. DHCP protocol is used for the dynamic configuration of IP
addresses. Instead of using its fixed IP address, DHCP client receives its IP address from DHCP server.
DNS Domain Name System. Internet service which is used to assign IP addresses to corresponding domain
names.
EDGE Enhanced Data rates for Global Evolution. The upgrade of GPRS system which allows increased data
transmission rates (download speed of up to 220 kbit/s; upload speed of up to 110 kbit/s).
Ethernet The most expanded standard of networking for local area networks (LAN; local area network). Ethernet
is standardized as IEEE 802.3.
Firewall Firewall is software which inspects data traffic between computer and LAN network, or Internet and
prevents the intrusion from the Internet to the computer based on a set of rules.
Firmware Software which is embedded in the very device and which serves for operating the device.
GPRS General Packet Radio Service. The upgrade of the packet data transmission. GPRS allows the constant
flow of IP data packets via application systems like web browser and file transfer.
HSDPA High Speed Down-link Packet Access. The upgrade of UMTS Network. Achievable speeds depend
on the network connection device; it is possible to achieve download speed of up to 1,8 Mbit/s, and
upload speed of up to 384 kbit/s.
IP address IP address identifies every device connected to the Internet and it is unique for every device.
LAN Local Area Network. Local computer network which can have a few or no connection with an external
network.
MAC address Media Access Control (MAC) address is the 48-bit network card identification number assigned by the
producer and it can not be changed. It is usually expressed in hexadecimal form.
NAT Network Address Translation (NAT). The method of converting (mostly private) IP addresses of one
network into other IP addresses of another network (mostly public).
Port Interface between operating system, applications and Internet.
SSID Service Set Identifier; a network name in WLAN network that enables certain WLAN devices to find
access point to the network.
TCP/IP Transmission Control Protocol/Internet Protocol; transport protocol that manages data transfer on the
Internet.
UMTS Universal Mobile Telecommunication System. Basic standard of the so-called 3G mobile networks. It
enables the data transfer download speed of up to 384 kbit/s and upload speed of up to 64 kbit/s.
URL Uniform Resource Locator is an Internet address, for ex. www.vipnet.hr
WAN Wide Area Network is a computer network that covers a broad area.
WEP Wired Equivalent Privacy; a standard which describes 64-bit or 128-bit encryption process used for
wireless LAN networks.