H.323 Settings – Advanced H.323 Settings - TANDBERG 150 MXP User Manual

Administrator Settings – Networks Settings
H.323 Settings – Advanced H.323 Settings
The Advanced H.323 Settings have effect
TIP!
when supported by your IP infrastructure only.
D 13640.04
MARCH 2006
MANIPULATED PICTURE
See General Settings – an overview for a description.
5
NAT, Network Address Translation, is used when a PC and a
videoconferencing system are connected to a router with NAT
support. NAT support in the videoconferencing system enables
proper exchange of audio/video data when connected to an
external videoconferencing system (when the IP traffic goes
through a NAT router). When NAT is On, the NAT Server Address
will be shown in the startup-menu: "My IP Address: 10.0.2.1".
On. The system will signal the configured "NAT Address" in lieu of
its own IP-address within Q.931 and H.245.
Auto. The system will try to determine if the "NAT Address" or the
real IP-address should be used within signalling. This has been
done to make it possible to place calls to endpoints on the LAN as
well as endpoints on the WAN.
NAT Address. This must be the external/global IP-address to the
router with NAT support. Packets sent to the router will then be
routed to the system. In the router, the following ports must be
routed to the system's IP-address:
Port 1720
Port 5555-5560
Port 2326-2365
Please contact your TANDBERG representative for further
information.
H.323 Ports, Static. When selecting static H.323 ports for TCP
connections the ports 5555 to 5574 will be used for Q.931 and
H.245 respectively.
H.323 Ports, Dynamic. The system will allocate which ports to
use when opening a TCP connection.
The reason for doing this is to avoid using the same ports for
subsequent calls as some firewalls consider this as a sign of attack.
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