Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
Example
The following example configures a voice coder rate that provides toll quality and uses a relatively high
amount of bandwidth:
dial-peer voice 10 voip
codec g711alaw
comfort-noise
To specify whether or not background noise should be generated, use the comfort-noise voice-port
configuration command. Use the no form of this command to disable this feature.
comfort-noise
no comfort-noise
Syntax Description
This command has no arguments or keywords.
Default
Enabled.
Command Mode
Voice-port configuration.
Usage Guidelines
Use the comfort-noise command to generate background noise to fill silent gaps during calls if VAD is
activated. If comfort noise is not enabled and VAD is enabled at the remote end of the connection, the
user hears dead silence when the remote party is not speaking.
The configuration of comfort noise only affects the silence generated at the local interface; it does not
affect the use of VAD on either end of the connection or the silence generated at the remote end of the
connection.
Example
The following example enables background noise:
voice port 0/0
comfort-noise
Related Commands
vad
connection
To specify a connection mode for a specified voice port, use the connection voice-port configuration
command. Use the no form of this command to disable the selected connection mode.