Altigen AltiContact Manager Version 5.0A Administration Manual page 272

Configuration Guidelines for NAT
When configuring remote IP Phone 3, you should set up the GKIP
or GWIP based on the gatekeeper/gateway mode. In this case,
AltiGatekeeper's/AltiWare's IP address are the same, which is
Router 1's public IP address — 169.254.56.169. Note that only
ONE (1) IP phone can be behind the NAT and connect to the
AltiWare through the NAT.
• Router 2
Router 2 is a router supporting NAT with the remote IP phone
connected. You need to set up the H323FWIP for this NAT to the
private IP address of IP Phone 3, which is 192.168.2.100. For
information on how to set up the H.323 traffic forwarding for H.323
NAT, please refer to page 9-28.
For the Remote IP Phone Directly on Internet:
• IP Phone 4
When configuring remote IP Phone 4, you should set up the GKIP
or GWIP based on the gatekeeper/gateway mode. In this case,
AltiGatekeeper's/AltiWare's IP address are the same, which is
169.254.56.169.
For an H323 IP Call from Another AltiWare on Internet:
Another AltiWare can make an H.323 IP call to this AltiWare by calling
Router 1's public IP address, which is 169.254.56.169.
9-20 AltiContact Manager Administration Manual