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3.6.2 Link two IP04s in different location
The generally environment for two ip04 in different location is: two IP04 are both behind
router and using the private IP.
Since the IP04 doesn’t have the public IP, we need to do port forwarding in the router and
make IP04 is reachable to others.
Step 1: Set port forwarding in the router for IP04A
The IP04A is behind the router, to register to IP04A via the internet, you need to forward the
IAX2 port in your router, so all the packets received on the router WAN port
(202.8.16.98:4569) will be forwarded to the IP04A (192.168.1.21:4569). Below is the setting
page in a linksys router:
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