ZyXEL Communications P-660HNU-Fx User Manual

Chapter 5 Broadband

ADSL Series User’s Guide

The WAN IP address is an IP address for the ZyXEL Device, which makes it accessible from an 
outside network. It is used by the ZyXEL Device to communicate with other devices in other 
networks. It can be static (fixed) or dynamically assigned by the ISP each time the ZyXEL Device 
tries to access the Internet.

If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and 
DNS server IP address(es).

Asynchronous Transfer Mode (ATM) is a LAN and WAN networking technology that provides high-
speed data transfer. ATM uses fixed-size packets of information called cells. With ATM, a high QoS 
(Quality of Service) can be guaranteed. ATM uses a connection-oriented model and establishes a 
virtual circuit (VC) between two endpoints before the actual data exchange begins.

• See 

 for advanced technical information on WAN.

• See 

 for WAN tutorials.

You need to know your Internet access settings such as encapsulation and WAN IP address. Get this 
information from your ISP.

The ZyXEL Device must have a WAN interface to allow users to use the DSL port to access the 
Internet. Use the Broadband screen to view, remove or add a WAN interface.

Click Network Setting > Broadband. The following screen opens.

Network Setting > Broadband