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Glossary
en / en / A31008-M2218-L101-3-7619 / glossary.fm / 20.03.2012
V
e
rsion 2, 27.0
5
.2010
RSS feed
Really Simple Syndication (also Rich Site Summary)
Provision of data in RSS format. RSS is an Internet service that summarises an Internet
page in a short paragraph and includes a link to the original page. Users can subscribe
to an RSS feed and receive automatically updated information.
RTCP
Real-Time Control Protocol
Is used to control the RTP protocol. The RTCP protocol is a control protocol and there-
fore knows which of the transferred RTP sessions belong together.
RTCP port
(Local)
port
by means of which voice data packets are sent and received for VoIP.
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.
S
Server
Makes a service available to other
network subscribers
(
clients
). The term can indicate
a computer/PC or an application. A server is addressed via the
IP address
/
domain
name
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
by means of which SIP signalling data is sent and received 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
.