Glossary

TCP/IP

Protocol family on which the Internet is based. IP forms the basis for every 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.

UDPUser 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.

UPnPUniversal Plug and Play

UPnP technology is used for the spontaneous linking of home or small office networks. Devices that support UPnP carry out their network configuration automatically once they are connected to a network. They also provide their own services or use services of other devices on the network automatically.

URLUniversal Resource LocatorGlobally unique address of a Domain on the Internet.Virtual server

A virtual Server provides a service on the Internet, that runs not on itself, but on another network component. The Gigaset SE551 WLAN dsl/cable can be configured as a virtual server. It will then direct incoming calls for a service via Port Forwarding directly to the appropriate Port of the network component in question.

VoIPVoice over IPSee Internet telephonyWANWide Area Network

A WAN is a network that is not restricted to one particular area, such as the Internet. A WAN is run by one or more public providers to enable private access. You access the Internet via an Internet Provider.

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