User Manual MX100E SIP-ISDN Gateway Series
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5.4.5 System
After login, click the label of
Advanced > System
to open this interface.
Figure 5-13 System Advanced Configuraiton Interface
Table 5-13 Advanced System Configuration Parameters
Name Description
NAT
NAT traversal
Gateways support several mechanisms for NAT traversal. Usually, static NAT is used when
fixed public IP address is available. It’s necessary to perform port mapping or DMZ function
on router when choosing dynamic or static NAT.
Refresh period
The refresh time must be filled in here when choosing dynamic NAT or STUN traversal.
Besides, refresh time interval shall be determined by giving consideration into the NAT
refresh time of the LAN router which the gateway is located. Gateway’s NAT holding
function and STUN function will carry out periodically operation according to this
parameter. With second as its unit, default value of 60 seconds.
SDP Address
This parameter determines the IP address used in transmitted SDP.
NAT IP Address: Apply NAT address into the transmitted SDP;
Local IP Address: Apply the gateway’s IP address into the transmitted SDP.
Note: The parameter should come into effect only on condition that gateway successfully
obtained NAT address.
