Gigaset DE410 IP Pro User Manual page 142

Glossary
Protocol
Describes the agreements for communicating within a network. It contains rules for open-
ing, administering and closing a connection, about data formats, time frames and possible
error handling.
Proxy/Proxy server
Computer program that controls the exchange of data between client and server in com-
puter networks. If the phone sends a query to the VoIP server, the proxy acts as a server
towards the phone and as a client towards the server. A proxy is addressed via the IP
address/domain name and port.
Public IP address
The public IP address is the address for a network component on the Internet. It is assigned
by the Internet service provider. Devices that act as a link from a local network to the Inter-
net (gateway, router) have a public and a local IP address.
See also: IP address, NAT.
Q
Quality of Service (QoS)
Describes the Quality of Service in communication networks. Differentiations are made
between various Quality of Service classes.
QoS influences the flow of data packets on the Internet, e.g., by prioritising data packets,
reserving bandwidth and optimising data packets.
In VoIP networks, QoS influences the voice quality. If the whole infrastructure (router, net-
work server etc.) has QoS, the voice quality is better, i.e., fewer delays, less echoing, less
crackling.
R
RAM
Random Access Memory
Memory in which you have reading and storage rights. Items such as melodies and screen
pictures are saved in the RAM after you have loaded them onto the phone via the Web
configurator.
Registrar
The registrar manages the network subscribers' current IP addresses. When you register
with your VoIP provider, your current IP address is saved on the registrar. This means you
can also be reached when on the move.
ROM
Read Only Memory
A type of memory that can only be read.
Router
Routes data packets within a network and between different networks via the quickest
route. Can connect Ethernet networks and WLAN. Can be the gateway to the Internet.
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