Zyxel-communications 2002 Series Manual de usuario descargar pdf (Pagina 53)

Prestige 2002 Series User’s Guide

Chapter 7 Phone 53

CHAPTER 7

Phone

This chapter covers how to adjust the Prestige’s phone settings.

7.1 Phone Introduction

You can configure the volume, echo cancellation and VAD settings for each individual phone

port on the Prestige. You can also select which SIP account to use for making outgoing calls.

7.1.1 Voice Activity Detection/Silence Suppression

Voice Activity Detection (VAD) detects whether or not speech is present. This lets the

Prestige reduce the bandwidth that a call uses by not transmitting “silent packets” when you

are not speaking.

7.1.2 Comfort Noise Generation

When using VAD, the Prestige generates and sends comfort noise when you are not speaking.

Comfort noise uses the lowest possible transmission bandwidth to match the background

noise. The comfort noise lets the person at the other end of the connection know that the line is

still connected (total silence would easily be mistaken for a lost connection).

7.1.3 Echo Cancellation

G.168 is an ITU-T standard for eliminating the echo caused by the sound of your voice

reverberating in the telephone receiver while you talk.

7.2 Phone Port Configuration

Click PHONE in the navigation panel to display the following screen.

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Zyxel-communications 2002 Series Manual de usuario Pagina 53