FXS Gateway Overview
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Step 3.
One can also assign a fixed IP address, which belongs to the same network
segment as the LAN interface of IP Sharing device.
Step 4.
FXS Gateway must enable the IP Sharing function for the fixed / dynamic
WAN IP Address.
Fixed IP Address:
usr/config$ ifaddr –ipsharing 1 210.11.22.33
Dynamic IP Address:
usr/config$ ifaddr –ipsharing 1
Note:
With Dynamic WAN IP Address, when the WAN IP is changed, we need to
change the external IP of FXS Gateway using above command.
Step 5.
After the configuration, [commit] and [reboot] the device.
usr/config$ commit
usr/config$ reboot
Step 6.
IP Sharing device must have a function to do IP/Port mapping. Some is
named as DMZ, some is named as virtual server whatever. The VoIP messages
from WAN have to completely pass forward to the LAN. It is said if the FXS
Gateway is assigned a virtual fixed IP Address such as 192.168.1.5, IP Sharing
device must forward the VoIP message to 192.168.1.5.
Please see following for example:
>Advanced setting > NAT setting > DMZ Host setting
DMZ Host setting
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Activate DMZ
DMZ Host IP:
192.168.1.5
