Xblue Networks X-50 Installation Manual page 17

WAN
The WAN port is used when connecting a Gateway to the Internet Service Provider's (ISP) DSL/Cable modem. Once
connected the Gateway allows remote devices to communicate with local devices connected to the LAN. Connecting
the X-50 VoIP Telephone System to the ISP using a DHCP address allows SIP Trunks to authentication and other
features such as email delivery of voicemail messages. This does not require a "Fixed" or Static Class A or B IP
Address, just access to the Internet.
E-mail Delivery
When using SIP Trunks or e-mail delivery of a voice mail messages and not using remote worker or creating a voice
network, the WAN port of the X-50 VoIP Telephone System is connected to a LAN port on the existing LAN. It can
use a DHCP address or given an internal static IP Address.
What does that say?
The WAN port can be programmed so that it connects to the Local
Area Network (LAN), allowing it to "function" as both a WAN and LAN
port. This allows the administrator to use Network Address Translation
(NAT) to redirect outside Class A or B IP Addresses to an internal
locations.
XBLUE Networks
Introduction
17