Gigaset SE105 Owner's Manual page 108

Glossary
Static IP address
A static IP address is assigned to a network component manually during network
configuration. Unlike a Dynamic IP address, a static IP address never changes.
Subnet mask
The subnet mask determines how many parts of the IP addresses of a network represent
the network number and how many the computer number.
The subnet mask administered by the Gigaset Router is always 255.255.255.0. That
means the first three parts of the IP address form the network number and the final part
is used for assigning computer numbers. The first three parts of the IP address of all
network components are in this case always the same.
Subnetwork
A subnetwork divides a network into smaller units.
Switch
A Switch, like a Hub, is an element for linking different network segments or
components. Unlike a hub, the switch has its own intelligence that enables it to further
packets to only that subnetwork or network component they are meant for.
See also: Bridge, Hub, Router, Gateway
TCP
Transmission Control Protocol
The TCP Protocol is part of the TCP/IP protocol family. TCP handles data transport
between communication partners (applications). TCP is a session-based transmission
protocol, i.e. it sets up, monitors and terminates a connection for transporting data.
See also: UDP
TCP/IP
Protocol family on which the Internet is based. IP forms the foundation for each
computer-to-computer connection. TCP provides applications with a reliable
transmission link in the form of a continuous data stream. TCP/IP is the basis on which
services such as WWW, Mail and News are built. There are other protocols as well.
Tunneling
Tunneling is a procedure in which the data traffic of the one Protocol is transmitted with
the help of a different protocol. For example, data packets of a private network can be
packed in IP packets and transported over the Internet as if in a tunnel. Tunneling
procedures are used nowadays for the secure transmission of data in a Virtual Private
Network (VPN). The IP packets from the local network are encrypted using a tunneling
protocol (e. g. PPTP) before being sent over the Internet.
UDP
User Datagram Protocol
UDP is a Protocol of the TCP/IP protocol family that handles data transport between
communication partners (applications). Unlike TCP UDP is a non-session based protocol.
It does not establish a fixed connection. The data packets, so-called datagrams, are sent
as a Broadcast. The recipient is responsible for making sure the data is received. The
sender is not notified about whether it is received or not.
UPnP
Universal Plug and Play
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