to
. The ports are released internally to the gateway on demand, i.e. when an
audio/video transfer is started in Messenger. When the application is closed, the ports are
immediately closed again.
The peer-to-peer-communication is initiated via public SIP servers with only the information
from the two clients being forwarded. The clients then communicate directly with one an-
other.
For further information about UPnP, see
.
17.9.1 Interfaces
In this menu, you configure the UPnP settings individually for each interface of your gate-
way.
You can determine whether UPnP requests from clients are accepted by each interface (for
requests from the local network) and/or whether the interface can be controlled via UPnP
requests.
The menu Local Services->UPnP->Interfaces consists of the following fields:
Fields in the Interfaces menu.
Field
Description
Interface
Shows the name of the interface for which the UPnP settings
are to be made. The entry cannot be changed.
Answer to client re-
quest
Determine whether UPnP requests from clients are to be
answered via the particular interface (from the local network).
The function is enabled with
7+
.
The function is disabled by default.
Interface is UPnP con-
trolled
Determine whether the NAT configuration of this interface is
controlled by UPnP.
The function is enabled with
7+
.
The function is disabled by default.
17.9.2 General
In this menu, you make the basic UPnP settings.
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