Siemens Gigaset DE380 IP R - Manual (Page 84)

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Glossary
R
RAM
Random Access Memory
Memory in which you have reading and storage rights. Items such as melo-
dies and screen pictures are saved in the RAM after you have loaded them
onto the phone via the Web configurator.
Registrar
The registrar manages the Network subscribers current IP addresses. 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.
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.
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 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 glo-
bal system.
A router is a part of this system; it sends data packets both within a local net-
work and from one network to the next. Transmission of data from one net-
work to another is performed on the basis of a common protocol.
RTCP
Real-time Control Protocol
Is used to control the RTP protocol. The RTCP protocol is a control protocol
and therefore knows which transferred RTP sessions belong together.
RTP
Real-time Transport Protocol
Global standard for sending audio and video data. Often used in conjunction
with UDP. In this case, RTP packets are embedded in UDP packets.
RTCP Port
(Local) Port that is used to send and receive voice data packets for VoIP.