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Network Address Translation (NAT) Table
Shows the NAT TCP and UDP mapping tables
NAT Table Option
Transfer Type
Select the TCP or UDP protocol.
Inside IP
Set the local IP address of device.
Inside Port
Set the LAN (inside) port for NAT mapping
Outside Port
Set the WAN (outside) port for NAT mapping
Note: After entering settings, click the Add button to add new mapping table data. To delete
an entry, enter its information and then click the Delete button.
Notice: The phone supports 10M/100M adaptive. Under loaded conditions traffic through the
phone NAT may not reach 100M.
8.3.7.4 VPN
The phone supports remote connection via VPN. It supports both Layer 2 Tunneling
Protocol (L2TP) and OpenVPN protocol. This allows users at remote locations on the
public network to make secure connections to local networks.
Field Name
Explanation
VPN Status
Shows the current VPN IP address.
VPN Mode
Select L2TP. You can choose only one for current state. After you select it, save the
configuration and reboot the phone.
Enable VPN
Enable/Disable VPN.
L2TP
Select Layer 2 Tunneling Protocol
OpenVPN
Select OpenVPN Protocol
Only one protocol may be activated. After the selection is made, the configuration should be
saved and the phone rebooted.