Specifications

VoiceFinder VoIP Gateway Configuration Guide (APOS 2.0) Release Version 3.1
AddPac Technology Co., LTD
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2.10. Configuring IP Share
IP share function enables a user to share the public IP which has been allocated from VoIP
gateway in IP network, which is a differentiated IP access method from NAT(network Address
Translation)/PAT(Port Address Translation) using the private IP.
IP share can be divided by the dynamic IP access method, which is commonly used for IP
access for ADSL or Cable Modem of the broadband network, and static IP access method which
takes a fixed IP in advance to be used for ADSL modem or leased line service.
In case of dynamic IP access method, VoIP gateway uses PPPoE, DHCP to be allocated with the
public IP, then the allocated public IP is transferred to the inside LAN user again. In case of static
IP address, a fixed public IP, which is assigned from Network Service Provider or ISP, is to be
allocated to both VoIP gateway and the inside LAN user in the same way.
For configuring the dynamic IP access, LAN0 Ethernet 0.0 port of the gateway is to be set
properly to the access method (ADSL or Cable modem), then LAN1 Ethernet 1.0 port of the
gateway is to be defined as DHCP server interface and deliver the allocated address without
assigning IP address. For configuring the static IP access, the assigned IP address is to be
configured on LAN0 Ethernet 0.0 port, no IP address is to be configured on LAN1 Ethernet 1.0.
IP Share function needs to have more than 2 Ethernet interfaces (LAN0, LAN1).
Figure 2.2 VoIP Network in IP Sharing Environment Diagram
Information