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Glossary
Gigaset A580 IP / US English / A31008-xxxx-xxxx-x-xxxx / glossary.fm / 28.04.2009
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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 automat-
ically canceled after about 2 hours (depending on the VoIP provider).
S
Server
Provides a service to other
). The term can indi-
cate a computer/PC or an application. A server is addressed via
/
and
Ports
.
SIP (Session Initiation Protocol)
Signaling protocol independent of voice communication. Used for establishing
and ending a call. It is also possible to define parameters for voice transmission.
SIP address
£
.
SIP port/Local SIP port
(Local)
that is used to send and receive SIP signaling data for VoIP.
SIP provider
£
.
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
a static IP address does not
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.
£
,
.
Subnet
Segment of a
.
Subnet mask
consist of a fixed network number and a variable subscriber
number. The network number is identical for all
. The size
of the network number part is determined in the subnet mask. In the subnet
mask 255.255.255.0, for example, the first three parts of the IP address are the
network number and the last part the subscriber number.
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