SIP User's Manual 222 Document #: LTRT-65412
MP-11x & MP-124
Parameter Description
NAT Parameters
EMS: Binding Life Time
[NATBindingDefaultTimeout]
Defines the default NAT binding lifetime in seconds. STUN
refreshes the binding information after this time expires.
The valid range is 0 to 2,592,000. The default value is 30.
Note: For this parameter to take effect, a device reset is required.
Web: NAT IP Address
EMS: Static NAT IP Address
[StaticNatIP]
Global (public) IP address of the device to enable static Network
Address Translation (NAT) between the device and the Internet.
Note: For this parameter to take effect, a device reset is required.
EMS: Disable NAT
[DisableNAT]
Enables / disables the Network Address Translation (NAT)
mechanism.
[0] = Enabled.
[1] = Disabled (default).
Note: The compare operation that is performed on the IP address is
enabled by default and is controlled by the parameter
EnableIPAddrTranslation. The compare operation that is performed
on the UDP port is disabled by default and is controlled by the
parameter EnableUDPPortTranslation.
[EnableIPAddrTranslation]
Enables IP address translation for RTP, RTCP, and T.38 packets.
[0] = Disable IP address translation.
[1] = Enable IP address translation (default).
[2] = Enable IP address translation for RTP Multiplexing
(ThroughPacket™).
[3] = Enable IP address translation for all protocols (RTP, RTCP,
T.38 and RTP Multiplexing).
When enabled, the device compares the source IP address of the
first incoming packet to the remote IP address stated in the opening
of the channel. If the two IP addresses don't match, the NAT
mechanism is activated. Consequently, the remote IP address of
the outgoing stream is replaced by the source IP address of the first
incoming packet.
Notes:
The NAT mechanism must be enabled for this parameter to take
effect (i.e., the parameter DisableNAT is set to 0).
For information on RTP Multiplexing, refer to RTP Multiplexing
(ThroughPacket) on page 414.
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