Gigaset C530 IP Manual page 150

Gigaset C530 IP / LUG - USA en / A31008-XXXXX-XXXX-X-XX / Glossary.fm / 25.03.2015
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 or router) have a public and a local IP address.
See also: IP address, NAT
Q
Quality of Service (QoS)
Quality of Service
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 entire infrastructure (router, network
server etc.) has QoS, voice quality is higher, e.g. fewer delays, less echoing, less crackling etc.
R
RAM
Random Access Memory
Memory in which you have reading and storage rights. Items such as melodies and logos are
saved in the RAM after you have loaded them onto the phone via the Web configurator.
Registrar
The registrar manages the current IP addresses of the Network subscriber. 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.
Ringback when busy
= CCBS (Completion of calls to busy subscriber). If a caller hears the busy tone, he or she can
activate the ringback function. As soon as the connection is free, the caller is called back. As
soon as the caller lifts the earpiece, the connection is made automatically.
Ringback when the call is not answered
= CCNR (Completion of calls on no reply). If a participant does not reply when called, a caller
can arrange an automatic ringback. As soon as the destination phone has completed a call
and is free again, the caller is rung back. This feature must be supported by the exchange. The
ringback request is automatically cancelled after about two hours (depending on the
network provider).
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 a Gateway to the Internet.
Glossary
149