Altigen AltiContact Manager Version 5.0 Administration Manual page 264

Configuration Guidelines for NAT
• AltiWare and AltiGatekeeper
The AltiWare and AltiGatekeeper are installed and running at the
same multi-homed host with private IP address 192.168.1.2 and
public IP address 169.254.101.2. When installing AltiGatekeeper,
configure as follows:
For Public Address: Redirect Address: 169.254.101.2
Enable Private Address: Enabled
For Private Address:
— Redirect Address: 192.168.1.2
— Subnet Address: 192.168.1.0
— Subnet Mask: 255.255.255.0
The public IP address of Router 2 should be configured as the IP
address of this IP extension in AltiWare for IP Phone 3. If it is
changed dynamically, then assign dynamic IP address
configuration for that extension.
Important: If there are two network cards on this multi-homed host, when
configuring the network cards, you should only set the default
gateway for the public interface network card. PLEASE
LEAVE THE DEFAULT GATEWAY FOR PRIVATE
INTERFACE NETWORK CARD EMPTY.
• IP Phone 1
When configuring the local IP phone with private IP address, IP
Phone 1, 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 192.168.1.2.
• IP Phone 2
When configuring the local IP phone with public IP address, IP
Phone 2, 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 169.254.101.2.
• Router 1
Router 1 is a normal router and the firewall is optional. It is
recommended that the user install a firewall for security reasons.
However, you should configure the firewall to allow the H.323
traffic to reach AltiWare. For firewall considerations, refer to page
9-27.
For the Remote IP Phone Using NAT:
9-22 AltiContact Manager Administration Manual