Siemens Gigaset C450IP Owner's Manual page 91

Glossary
I
IEEE
Institute of Electrical and Electronics Engineers
International body that defines stand-
ards in electronics and electrotechnol-
ogy, concerned in particular with the
standardisation of LAN technology,
transmission protocols, data transfer
rate and wiring.
Infrastructure network
Network with central structure:
all Network subscribers communicate
via a central Router.
Internet
Global WAN. A series of protocols have
been defined for exchanging data,
known by the name TCP/IP.
Every Network subscribers is identifia-
ble via its IP address. DNS assigns a
Domain name to the IP address.
Important services on the Internet
include the World Wide Web (WWW),
Email, file transfer and discussion
forums.
Internet Service Provider
Enables access to the Internet for a fee.
IP (Internet Protocol)
TCP/IP protocol on the Internet. IP is
responsible for the addressing of sub-
scribers in a Network using IP
addresses, and routes data from the
sender to the recipient. IP determines
the paths (routing) along which the
data packets travel.
IP address
A unique address for a network compo-
nent within a network on the basis of
the TCP/IP protocols (e.g. LAN, Inter-
net). On the Internet, domain names
are usually assigned instead of IP
addresses. DNS assigns the corre-
sponding IP address to the domain
name.
90
The IP address consists of four parts
(decimal numbers between 0 and 255)
separated by points (e.g.
230.94.233.2).
The IP address is made up of the net-
work number and the number of the
Network subscribers (e.g. phone).
Depending on the Subnet mask, the
front one, two or three parts make up
of the network number and the rest of
the IP address addresses the network
components. The network number of
all the components in any one network
must be identical.
IP addresses can be assigned automati-
cally with DHCP (dynamic IP addresses)
or manually (static IP addresses).
See also: DHCP.
IP pool range
Range of IP addresses that the DHCP
server can use to assign dynamic IP
addresses.
L
LAN
Local Area Network
Network with a restricted physical
range. A LAN can be wireless (WLAN)
and/or wired.
Local IP Address
The local or private IP address is the
address for a network component in
the local network (LAN). The network
operator can assign any address he or
she wants. Devices that act as a link
from a local network to the Internet
(gateway or router) have a public and a
private IP address.
See also: IP address.
Local SIP Port
See SIP port/Local SIP port.