ZyXEL Communications P-2602 manual Applications for the ZyXEL Device, Internet Access

P-2602H(W)(L)-DxA Series User’s Guide

1.4 Applications for the ZyXEL Device

Here are some example uses for which the ZyXEL Device is well suited.

1.4.1 Internet Access

Your device is the ideal high-speed Internet access solution. It supports the TCP/IP protocol, which the Internet uses exclusively. It is compatible with all major ADSL DSLAM (Digital Subscriber Line Access Multiplexer) providers. A DSLAM is a rack of ADSL line cards with data multiplexed into a backbone network interface/connection (for example, T1, OC3, DS3, ATM or Frame Relay). Think of it as the equivalent of a modem rack for ADSL. In addition, your device allows wireless clients access to your network resources and the Internet. A typical Internet access application is shown below.

Figure 1 Internet Access Application

1.4.1.1 Internet Single User Account

For a SOHO (Small Office/Home Office) environment, your device offers the Single User Account (SUA) feature that allows multiple users on the LAN (Local Area Network) to access the Internet concurrently for the cost of a single IP address

1.4.2 Making Calls via Internet Telephony Service Provider

In a home or small office environment, you can use your device to make and receive VoIP telephone calls through an Internet Telephony Service Provider (ITSP).

The following figure shows a basic example of how you would make a VoIP call through an ITSP. You use your analog phone (A in the figure) and your device (B) changes the call into VoIP. Your device then sends your call to the Internet and the ITSP’s SIP server. The VoIP call server forwards calls to PSTN phones (E) through a trunking gateway (D) to the PSTN network. The VoIP call server forwards calls to IP phones (F) through the Internet.

44 Chapter 1 Getting To Know the ZyXEL Device