Gigaset A580 IP User Manual page 186

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
Ringback when the call is not answered
= CCNR (Completion of Calls on No Reply). If a participant does not respond
when called, a caller can arrange an automatic ringback. As soon as the desti-
nation phone has completed a call and is free again, the caller is rung back.
This feature must be supported by the exchange. The ringback request is auto-
matically cancelled after about 2 hours (depending on the VoIP 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 rung back. As soon as the caller lifts the receiver the connection is
made automatically.
S
Server Provides a service to other
cate a computer/PC or an application. A server is addressed via
Domain names
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
£
VoIP
SIP provider
SIP proxy server
IP address of your VoIP provider's gateway server.
that is used to send and receive voice data packets for VoIP.
Network subscribers
and Port.
that is used to send and receive SIP signalling data for VoIP.
provider.
(Clients). The term can indi-
IP address/
Glossary
185