Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
If the value for this command is set too high, VAD interprets music-on-hold as silence, and the remote
end does not hear the music. If the value for this command is set too low, VAD compresses and passes
silence when the background is noisy, creating unnecessary voice traffic.
Example
The following sets the dB threshold for the music played when calls are put on hold to –35:
voice port 0/0
music-threshold
–35
non-linear
To enable nonlinear processing in the echo canceller, use the non-linear voice-port configuration
command. Use the no form of this command to disable this feature.
non-linear
no non-linear
Syntax Description
This command has no arguments or keywords.
Default
Enabled.
Command Mode
Voice-port configuration.
Usage Guidelines
This command is associated with the echo canceller operation. The echo-cancel enable command must
be enabled for the non-linear command to take effect. Use the non-linear command to shut off any
signal if no near-end speech is detected.
Enabling the non-linear command normally improves performance, although some users might hear
truncation of consonants at the end of sentences when this command is enabled.
This feature is also generally known as residual echo suppression.
Example
The following example enables nonlinear call processing:
voice port 0/0
non-linear
Related Commands
echo-cancel enable