ZyXEL Communications V300 - Manual (Page 120)

Chapter 11 Phone Setup
V300 User’s Guide
120
11.1.1 Voice Activity Detection/Silence Suppression
Voice Activity Detection (VAD) detects whether or not speech is present. This lets the V300
reduce the bandwidth that a call uses by not transmitting “silent packets” when you are not
speaking.
11.1.2 Comfort Noise Generation
When using VAD, the V300 generates comfort noise when the other party is not speaking. The
comfort noise lets you know that the line is still connected as total silence could easily be
mistaken for a lost connection.
11.1.3 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.
11.2 Phone Region Screen
Use this screen to maintain settings that depend on which region of the world the V300 is in.
To access this screen, click VoIP > Phone > Region.
Ring Volume Select this to set the volume of the V300’s ringtone.
0 is the quietest and 12 is the loudest.
Headset
Volume
Select this to set the volume of an attached headset (or any device connected to
the external speaker and/or microphone sockets). This controls both the handset’s
speaker (earpiece) and its microphone.
0 is the quietest and 12 is the loudest.
Echo Cancellation
G.168 Active Select this if you want to eliminate the echo caused by the sound of your voice
reverberating in the telephone receiver while you talk.
Voice Active
Detection
VAD Support Select this if the V300 should stop transmitting when you are not speaking. This
reduces the bandwidth the V300 uses.
Apply Click this to save your changes and to apply them to the V300.
Reset Click this to set every field in this screen to its last-saved value.
Table 49 VoIP > Phone > Phone Settings
LABEL DESCRIPTION