AudioCodes Media Pack MP-11x, User Manual

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User's Manual 480 Document #: LTRT-65432
MP-11x & MP-124
Parameter Description
page 148 .
Web: STUN Server Primary IP
EMS: Primary Server IP
[STUNServerPrimaryIP]
Defines the IP address of the primary STUN server.
The valid range is the legal IP addresses. The default is 0.0.0.0.
Note: For this parameter to take effect, a device reset is
required.
Web: STUN Server Secondary IP
EMS: Secondary Server IP
[STUNServerSecondaryIP]
Defines the IP address of the secondary STUN server.
The valid range is the legal IP addresses. The default is 0.0.0.0.
Note: For this parameter to take effect, a device reset is
required.
[STUNServerDomainName] Defines the domain name for the Simple Traversal of User
Datagram Protocol (STUN) server's address (used for retrieving
all STUN servers with an SRV query). The STUN client can
perform the required SRV query to resolve this domain name to
an IP address and port, sort the server list, and use the servers
according to the sorted list.
Notes:

For this parameter to take effect, a device reset is required.

Use either the STUNServerPrimaryIP or the
STUNServerDomainName parameter, with priority to the first
one.
NAT Parameters
NAT Mode
disable-NAT-traversal
[NATMode]
Enables the NAT feature for media when the device
communicates with UAs located behind NAT.

[0] Auto-Detect = NAT is performed only if necessary. If the
UA is identified as being located behind NAT, the device
sends the media packets to the public IP address:port
obtained from the source address of the first media packet
received from the UA. Otherwise, the packets are sent using
the IP address:port obtained from the address in the first
received SIP message. Note that if the SIP session is
established (ACK) and the device (not the UA) sends the
first packet, it sends it to the address obtained from the SIP
message and only after the device receives the first packet
from the UA, does it determine whether the UA is behind
NAT.

[1] NAT Is Not Used = (Default) NAT feature is disabled.
The device always sends the media packets to the remote
UA using the IP address:port obtained from the first
received SIP message.

[2] NAT Is Used = NAT is always performed. The device
always sends the media packets to the remote UA using the
source address obtained from the first media packet from
the UA. In this mode, the device does not send any packets
until it receives the first packet from the UA (in order to
obtain the IP address).
Web: NAT IP Address
EMS: Static NAT IP Address
[StaticNatIP]
Defines the global (public) IP address of the device to enable
static NAT between the device and the Internet.
Note: For this parameter to take effect, a device reset is
required.
EMS: Binding Life Time
[NATBindingDefaultTimeout]
Defines the default NAT binding lifetime in seconds. STUN
refreshes the binding information after this time expires.