ADTRAN AOS Version R10.1.0 Command Reference Manual page 3531

Command Reference Guide
vad
Use the vad command to enable voice activity detection (VAD). VAD blocks out noise categorized as
silence during a voice connection. The silent voice packets are not transmitted, allowing bandwidth usage
to be reduced. Although VAD saves bandwidth, the quality of the voice call may be compromised. Use the
no form of this command to disable this feature.
Syntax Description
No subcommands.
Default Values
By default, VAD is enabled for all T1 robbed-bit signaling RBS trunks and users.
Command History
Release 9.3
Release 11.1
Usage Examples
The following example enables voice activation detection on trunk T01:
(config)#voice trunk t01 type isdn
(config-t01)#vad
60000CRG0-35E
Command was introduced.
Command was expanded to include the integrated services digital network
(ISDN) trunk.
Copyright © 2012 ADTRAN, Inc.
Voice ISDN Trunk Command Set
3531