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Gigaset C530IP / IM-Nord en / A31008-M2506-R201-1-PG19 / Glossary.fm / 06.03.2014
Template Borneo, Version 1, 21.06.2012
Glossary
Routing
Routing is the transfer of data packets to another subscriber in your network. On their way to
the recipient, the data packets are sent from one network node 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 network 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
Real-Time Transport Protocol
Global standard for transferring audio and video data. Often used in conjunction with UDP.
In this case, RTP packets are embedded in UDP packets.
RTP port
(Local) Port that is used to send and receive voice data packets for VoIP.
S
Server
Provides a service to other Network subscribers (Clients). The term can indicate a computer/
PC or an application. A server is addressed via IP address/Domain Names and Port.
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.
SIP address
See URI.
SIP port / local SIP port
(Local) Port that is used to send and receive SIP signalling data packets for VoIP.
SIP provider
See VoIP provider.
SIP proxy server
IP address of your VoIP provider's gateway server.
Static IP address
See Fixed IP address.
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 VoIP
telephone data packets 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.
See also: ALG, Firewall, NAT, Outbound Proxy.
Subnet
Segment of a Network.
