Gigaset A580 IP User Manual page 185

Glossary
Proxy/proxy server
Computer program that controls the exchange of data between
Server in computer 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
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 Internet (gateway, router) have a public and a local IP
address.
£
IP address
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 data packet optimisation.
In VoIP networks, QoS influences the voice quality. If the whole infrastructure
(router, network 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.
The registrar manages the
Registrar
you register with your VoIP provider, your current IP address is saved on the reg-
istrar. 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
to the Internet.
184
Domain name/IP address
and NAT
Network
Ethernet networks
and Port.
subscribers' current IP addresses. When
and WLAN. Can be a
Client and
Gateway