Gigaset N510 IP PRO Manual page 130

Glossary
Protocol
Describes the agreements for communicating within a Network. It contains rules for
opening, 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
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
IP address/Domain name
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 net-
work to the Internet (gateway, router) have a public and a local IP address.
See also: IP
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 pack-
ets, reserving bandwidth and optimising data packets.
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
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
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 the call is not answered
= CCNR (Completion of calls on no reply). If a party 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 called back. This feature must be supported by the
exchange. The ringback request is automatically cancelled after about two hours
(depending on the network provider).
Ringback when the number is 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 automati-
cally.
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and Port.
address, NAT.
Client and
Network subscriber. When you
Server in