ZyXEL Communications P2000W Manual De Usuario

P-2000W_V2 User’s Guide

24

Chapter 1 Getting To Know Your Prestige

Some VoIP service providers use a SIP outbound server to handle voice calls. This allows the 
Prestige to work from behind any type of NAT router and eliminates the need for STUN or a 
SIP ALG (Application Layer Gateway).

The Prestige can use the following voice codecs (coder/decoders).

• G.711
• G.729

Voice Activity Detection (VAD) reduces the bandwidth that a call uses by not transmitting 
when you are not speaking. This also helps increase the battery lifetime.

The Prestige generates background noise to fill moments of silence when the other device in a 
call stops transmitting because the other party is not speaking (as total silence could easily be 
mistaken for a lost connection). 

PPPoE (Point-to-Point Protocol over Ethernet) facilitates the interaction of a host with an 
Internet modem to achieve access to high-speed data networks via a familiar "dial-up 
networking" user interface.

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

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

When you have a (IEEE 802.11b) wireless connection to the Internet, you can use the Prestige 
to make and receive VoIP telephone calls through an Internet Telephony Service Provider’s 
(ITSP) call server. 

VoIPon     www.voipon.co.uk      sales@voipon.co.uk      Tel: +44 (0)1245 808195      Fax: +44 (0)1245 600030