ZyXEL Communications 2002 Series Manuel D’Utilisation

Prestige 2002 Series User’s Guide

Chapter 1 Introducing the Prestige

19

Voice Activity Detection (VAD) reduces the bandwidth that a call uses by not transmitting 
“silent packets” when you are not speaking. 

When the Prestige uses VAD, it generates and sends comfort (background) noise when you are 
not speaking.

The Prestige supports G.168, an ITU-T standard for eliminating the echo caused by the sound 
of your voice reverberating in the telephone receiver while you talk.

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.

The Prestige automatically detects fax messages and sends them over PCM G.711. 

Auto-provisioning automatically updates your Prestige’s configurable settings via a TFTP 
server.  

Use the web configurator to upload updated firmware to your Prestige.

Your Prestige is designed for quick, intuitive and easy installation. Physically, its compact size 
and lightness make it easy to position anywhere in your busy office.

Here are some examples of how you can use your Prestige. 

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