Yealink SIP-T2 SERIES Administrator's Manual page 835

For example, A is talking with B.
A: VAD=1, CNG=1
B: VAD=0, CNG=1
If A mutes the call, since VAD=1, A will send CN packets to B. When receiving CN
packets, B will generate comfortable noise.
If B mutes the call, since VAD=0, B will not send CN packets to A. So even if CNG=1 (B),
A will not hear comfortable noise.
Procedure
CNG can be configured using the configuration files or locally.
Configuration File
Local
Details of the Configuration Parameter:
Parameter
voice.cng
Description:
Enables or disables the CNG (Comfortable Noise Generation) feature on the IP
phone.
0-Disabled
1-Enabled
Web User Interface:
<y0000000000xx>.cfg
Web User Interface
Permitted Values
0 or 1
Configuring Audio Features
Configure CNG.
Parameter:
voice.cng
Configure CNG.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40
P/T29G/T27P/T23P/T23G/T21(P
) E2/T19(P) E2/CP860:
http://<phoneIPAddress>/ser
vlet?p=settings-voice&q=loa
d
For SIP VP-T49G:
http://<phoneIPAddress>/ser
vlet?m=mod_data&p=settin
gs-voice&q=load
Default
1
813