FXS Gateway Overview
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Step 1.
The WAN IP Address obtained from ADSL has two kinds of methods. One is
fixed IP Address, while user applies for one or more fixed IP Addresses. Another
is dynamic IP Address while user applies for dial-up connection way.
Step 2.
The LAN IP Address of User’s PC can be set as DHCP client in order to gain
a valid one.
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.
Note:
For the Dynamic WAN IP Address, a valid Proxy for FXS Gateway to get
registration on is a necessary. On the other words, it is not workable in
Peer-to-Peer mode while your IP sharing device is under dynamic WAN IP
Address.
Step 5.
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
