AltiGen comm ACM 5.1 manual VPN Network Configuration Example, For the Branch office LAN

Chapter 24: Network Configuration Guidelines for VoIP

No special configuration is needed for Router 2. Also, more than one AltiGen SIP phone can sit behind Router 2.

For an H.323 IP Call from Another AltiWare on the Internet

Another AltiWare can make an H.323 IP call to this AltiWare by calling the AltiWare's public IP address, which is 169.254.101.2.

VPN Network Configuration Example

(Connecting to AltiWare with VPN)

Figure 2. AltiWare with VPN

In a multi-site configuration, VPN can be used to provide a secured tunnel between the remote sites and the corporate site.

Figure 2 shows a network layout in which there are two private networks, the corporate LAN and branch office LAN. The VPN tunnel connects the two private networks such that the two networks access each other with a private IP address.

In the corporate network, AltiWare is installed on a host with private IP address 192.168.1.2.

Both Router 1 and Router 2 are VPN-capable and compatible with each other. (It is recommended that the routers come from same vendor.) A VPN tunnel exists between these two routers. The local IP phones—IP Phone 1 and IP Phone 2—directly connect to the corporate network with private IP address 192.168.1.100 and 192.168.1.101. And the three remote IP phones—IP Phone 3, IP Phone 4 and IP Phone 5—connect to the branch office network with private IP addresses 192.168.2.100, 192.168.2.101 and 192.168.2.102, respectively.

Setup

For the Branch office LAN:

•IP Phone 3, IP Phone 4 and IP Phone 5

AltiWare ACM 5.1 Administration Manual 319