Vad-On - H3C MSR 20-20 Command Reference Manual

2616 C 173: V IP C
HAPTER O
View
Parameter
Description
Example

vad-on

Syntax
View
Parameter
Description
Related command:
Example
C
ONFIGURATION OMMANDS
undo type
Analog E&M voice subscriber line view
1, 2, 3 and 5: Correspond respectively to the four signal types of analog E&M
subscriber lines, i.e. type 1, 2, 3 and 5.
Use the command to configure the analog E&M subscriber line signal type.
type
Use the
undo type
By default, the analog E&M subscriber line signal type is type 5.
This command is only applicable to the analog E&M subscriber line.
# Configure subscriber line 1/0 analog E&M subscriber line type as type 3.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] subscriber-line 1/0
[Sysname-voice-line1/0] type 3
vad-on
undo vad-on
POTS/VoIP/VoFR entity view
None
Use the vad-on command to enable voice activity detection (VAD) function.
Use the
undo vad-on
By default, the silence detection function is disabled.
Note that G.711 codec does not support VAD.
The voice activity detection (VAD) discriminates between silence and speech on a
voice connection according to their energies. VAD reduces the bandwidth
requirements of a voice connection by not generating traffic during periods of
silence in an active voice connection. Speech signals are generated and
transmitted only when an active voice segment is detected. Researches show that
VAD can save the transmission bandwidth by 50%.
cng-on.
# Enable VAD on POTS voice entity 10.
command to cancel the existing settings.
command to disable silence detection function.