AltiGen MAXCS 7.0 Update 1 ACM Administration - Manual (Page 322)

Chapter 25: Network Configuration Guidelines for VoIP
306 MaxCS 7.5 Administration Manual
When configuring the remote IP phones – IP Phone 3, IP Phone 4, and IP Phone 5 – you should set up
the AW address to use the MAXCS IP address.
For the VPN Tunnel between the Two Private Networks:
You must set up a VPN tunnel to connect the two private networks. The VPN setup procedure may be compli-
cated and is generally performed by a professional IT technician.
The following minimum guidelines need to be considered for setting up the VPN tunnel:
• WAN Bandwidth – Should be greater than the aggregate of maximum VoIP session bandwidth usage.
• QoS – If the IP WAN network provides QoS (Quality of Service), it should be configured to honor VoIP
RTP packet transmission.
An easy example for a VPN resolution is with the Linksys EtherFast VPN router 1 . Router 1 and Router 2
are routers supporting VPN. When configuring these VPN routers, the following information is needed.
(Also, please refer to the Router's User Guide for more detailed information.)
Router 1's Settings
Local Secure Group :
(specifies the local network which
can access the VPN tunnel at the
corporate network)
Subnet IP :
192.168.1.0
(Corporate Network)
Subnet Mask :
255.255.255.0
Remote Secure Group :
(specifies the remote network
which can access the VPN tunnel
at the branch office network)
Subnet IP :
192.168.2.0
(Branch Office Network)
Subnet Mask :
255.255.255.0
Remote Security Gateway :
(specifies the public IP address of
the remote gateway which can
access the VPN tunnel at the
branch office) 63.224.32.34
(Router 2’s public IP
Address
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)
Subnet IP :
192.168.2.0
(Branch Office Network)
Subnet Mask :
255.255.255.0
Remote Secure Group :
(specifies the corporate network, which
can be accessed by stations in this local
private network through the VPN tunnel)
Subnet IP :
192.168.1.0
(Corporate Network)
Subnet Mask :
255.255.255.0
Remote Security Gateway :
(specifies the public IP address of the
corporate VPN-enabled gateway)
169.254.56.159
(Router 1’s public IP
Address
1
Linksys is for reference only. AltiGen has not certified this product or any other router at this time.