ZyXEL Communications PRESTIGE 2000W V2, Руководство пользователя

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P-2000W_V2 User’s Guide
Chapter 1 Getting To Know Your Prestige 23
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H A P T E R
1
Getting To Know Your Prestige
This chapter describes the key features and applications of your
Prestige.
The Prestige 2000W_V2 is a wireless telephone that operates over the Internet. It gives you
the benefits of Internet telephony, for example cheaper calls, without the physical restrictions
of a fixed Internet connection (it provides 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
IEEE 802.11b 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 Features
Dynamic Jitter Buffer
The Prestige has a built-in adaptive, buffer that helps to smooth out the variations in delay
(jitter) for voice traffic. This helps ensure good voice quality for your conversations.
QoS (Quality of Service)
Quality of Service (QoS) mechanisms help to provide better service on a per-flow basis. The
Prestige supports Type of Service (ToS) and Differentiated Services (DiffServ). This allows
the Prestige to tag voice frames so they can be prioritized over the network.
Auto-provisioning
Auto-provisioning automatically updates your Prestige’s configurable settings via a server
hosted by your VoIP service provider.
STUN
Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators
(STUN) allows SIP to pass through NAT routers.