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

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[Sysname] subscriber-line 1/0
[Sysname-subscriber-line1/0] dtmf threshold analog 9 40
echo-canceller
Use echo-canceller to enable echo cancellation and set the echo duration.
Use undo echo-canceller to disable the EC function.
Syntax
echo-canceller { enable | tail-length milliseconds }
undo echo-canceller { enable | tail-length }
Default
The EC function is enabled.
Views
FXS voice subscriber line view, FXO voice subscriber line view, E&M voice subscriber line view, BSV voice
subscriber line view
Default command level
2: System level
Parameters
enable: Enables the EC function.
tail-length milliseconds: Echo duration in milliseconds, that is, the time that elapses from when a
subscriber speaks to when the subscriber hears the echo. The value range for milliseconds is 0 to 64, and
the default is 0.
Usage guidelines
The echo-canceller tail-length command is applicable only after the echo-canceller enable command is
executed.
Examples
Configure the echo duration on voice subscriber line 1/0 to 24 milliseconds.
<Sysname> system-view
[Sysname] subscriber-line 1/0
[Sysname-subscriber-line1/0] echo-canceller enable
[Sysname-subscriber-line1/0] echo-canceller tail-length 24
Related commands
• subscriber-line
• echo-canceller parameter
echo-canceller parameter
Use echo-canceller parameter to configure echo cancellation parameters.
Use undo echo-canceller parameter to restore the default.