Altigen MAXCS ACC 6.0 Administration Manual page 315

Router 2's Setting
Router 2's public IP address should be a fixed IP address.
Local Secure Group:
(specifies the local private
network in the branch office,
which can access the corporate
network through VPN)
Remote Secure Group:
(specifies the corporate network,
which can be accessed by stations
in this local private network
through the VPN tunnel)
Remote Security Gateway:
(specifies the public IP address of
the corporate VPN-enabled
gateway)
Chapter 24: Network Configuration Guidelines for VoIP
Subnet IP:
192.168.2.0
(Branch Office
Network)
Subnet IP:
192.168.1.0
(Corporate Network)
169.254.56.159
(Router 1's public IP
Address
MAXCS ACC 6.0 Administration Manual 301
Subnet Mask:
255.255.255.0
Subnet Mask:
255.255.255.0