Siemens GIGASET A580 User Manual page 182

Routing is the transfer of data packets to another subscriber in your network.
Routing
On their way to the recipient, the data packets are sent from one router to the
next until they reach their destination.
If data packets were not forwarded in this way, a network like the Internet
would not be possible. Routing connects the individual networks to this global
system.
A router is a part of this system; it transfers data packets both within a local net-
work and from one network to the next. Transfer of data from one network to
another is performed on the basis of a common protocol.
RTP
Realtime Transport Protocol
Global standard for transferring audio and video data. Often used in conjunc-
tion with UDP. In this case, RTP packets are embedded in UDP packets.
RTP port (Local) Port
S
Server Provides a service to other
cate a computer/PC or an application. A server is addressed via
Domain
SIP (Session Initiation Protocol)
Signalling protocol independent of voice communication. Used for establishing
and ending a call. It is also possible to define parameters for voice transmission.
£
URI.
SIP address
SIP port/Local SIP port
(Local) Port
SIP provider
£
VoIP
SIP proxy server
IP address of your VoIP provider's gateway server.
Static IP address
A static IP address is assigned to a network component manually during net-
work configuration. Unlike a
change.
STUN
Simple Transversal of UDP over NAT
NAT control mechanism.
STUN is a data protocol for VoIP telephones. STUN replaces the private IP
address in the data packets of the VoIP telephone with the public address of the
secure private network. To control data transfer, a STUN server is also required
on the Internet. STUN cannot be implemented with symmetric NATs.
£
ALG, Firewall, NAT,
Segment of a Network.
Subnet
that is used to send and receive voice data packets for VoIP.
Network subscriber
names and Port.
that is used to send and receive SIP signalling data for VoIP.
provider.
Outbound
(Clients). The term can indi-
Dynamic IP address, a static IP address does not
proxy.
Glossary
IP address /
181