ZyXEL Communications Prestige 2000W, User Manual

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Prestige 2000W User’s Guide
Introducing the Prestige 1-1
Chapter 1
Introducing the Prestige
The Prestige 2000W is a wireless telephone that operates over the Internet. It gives users the benefits of Internet
telephony, for example cheaper calls, without the physical restrictions of a fixed Internet connection i.e. mobility.
Sending compressed voice signals over the Internet is called Voice over IP or VoIP. The Prestige is a Session Initiated
Protocol (SIP) - based wireless VoIP telephone. SIP is an internationally recognized standard for implementing VoIP.
The Prestige allows you to make and receive VoIP calls as long you are within range of an IEEE802.11b enabled
wireless network.
The Prestige is easy to use and configure via the LCD display and keypad. You can even manage your settings over the
Internet using the Prestige's Web Configurator.
1.1 Applications
1.1.1 Place a call via “SIP Proxy Server” (SIP call server)
Use the Prestige to make and receive VoIP telephone calls when you are within range of a wireless Internet Telephony
Service Provider (ITSP). You don’t need to know if the recipient’s connection type is an IP, cellular or landline based
service. Your Prestige can call any landline or mobile telephone that a traditional PSTN telephone can connect to as well
the IP telephone network. Calls received from IP telephones works exactly as you would expect from the traditional
telephone service.
Figure 1-1 SIP Proxy Server Application
The Prestige registers with a SIP proxy server in the following circumstances:
•
Your connection uses an IP Telephony Service.
•
Your connection is based in a corporate VoIP environment.