Siemens Gigaset S685 IP Manual page 261

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 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
Provides a service to other
Server
cate a computer/PC or an application. A server is addressed via
Domain name
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
SIP provider
See VoIP
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
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 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,
Subnet Segment of a Network.
Network subscribers
and Port.
that is used to send and receive SIP signalling data for VoIP.
provider.
Dynamic IP address, a static IP address does not
Outbound proxy.
(Clients). The term can indi-
IP address/
Glossary
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