Yealink W80, Руководство администратора

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Administrator’s Guide for W80 DECT IP Multi-Cell System
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Voice Activity Detection (VAD)
VAD can avoid unnecessary coding or transmission of silence packets in VoIP applications, saving on computation
and network bandwidth.
Topic
VAD Configuration
VAD Configuration
The following table lists the parameter you can use to configure VAD.
Parameter voice.vad <y0000000000xx>.cfg
Description It enables or disables the VAD (Voice Activity Detection) feature.
Permitted
Values
0 -Disabled
1 -Enabled
Default 0
Web UI Settings > Voice > Echo Cancellation > VAD
Comfort Noise Generation (CNG)
Comfort Noise Generation (CNG) is used to generate background noise for voice communications during periods of
silence in a conversation.
Note
: VAD is used to send CN packets when the phone detects a “silence” period; CNG is used to generate comfortable
noise when the phone receives CN packets from the other side.
Topic
CNG Configuration
CNG Configuration
The following table lists the parameter you can use to configure CNG.
Parameter voice.cng <y0000000000xx>.cfg
Description It enables or disables the CNG (Comfortable Noise Generation) feature.
Permitted
Values 0 -Disabled
1 -Enabled
Default 1
Web UI Settings > Voice > Echo Cancellation > CNG
Jitter Buffer
Yealink phones support two types of jitter buffers: fixed and adaptive. A fixed jitter buffer adds the fixed delay to
voice packets. You can configure the delay time for the static jitter buffer on the phones. An adaptive jitter buffer is
capable of adapting the changes in the network's delay. The range of the delay time for the dynamic jitter buffer
added to packets can be also configured on the phones.
Topic
Jitter Buffer Configuration