R2511-HP MSR Router Series Voice Command Reference(V5)

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The VAD discriminates between silence and speech on a voice connection according to signal 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%.
Examples
# Enable VAD on POTS voice entity 10.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] dial-program
[Sysname-voice-dial] entity 10 pots
[Sysname-voice-dial-entity10] vad-on
Related commands
cng-on
vi-card dsp-image
Use vi-card dsp-image to set the type of the DSP image.
Syntax
vi-card dsp-image { ms | general }
Default
The DSP image is a general version.
Views
Voice view
Default command level
2: System view
Parameters
ms: Sets the DSP image as a Microsoft-verified version that can meet the voice quality requirements of
Microsoft but does not support the G723 codec.
general: Sets the DSP image as a general version that cannot meet the voice quality requirements of
Microsoft but supports the G723 codec.
Usage guidelines
After you execute this command, you must reboot the router to apply the new configuration.
The display current-configuration command does not display the settings configured by this command.
To view the settings, use the display device verbose command.
Examples
# Configure the DSP image as a Microsoft-verified version.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] vi-card dsp-image ms
Configuration will take effect after next reboot.
[Sysname-voice] quit