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2592 CHAPTER 173: VOIP CONFIGURATION COMMANDS
tail-length milliseconds: Echo duration in milliseconds, that is, the time that
elapses from when a subscriber speaks to when he hears the echo. It ranges from
0 to 64, with a default of 32.
Description Use the
echo-canceller command to enable echo cancellation and set the echo
duration.
Use the
undo echo-canceller command to disable the EC function.
By default, the EC function is disabled.
n
This command is applicable only after the echo-canceller enable command is
executed.
Related command: subscriber-line and echo-canceller parameter.
Example Configure the echo duration on voice subscriber line 1/0 to 24 milliseconds.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] subscriber-line 1/0
[Sysname-voice-dial-line1/0] echo-canceller enable
[Sysname-voice-dial-line1/0] echo-canceller tail-length 24
echo-canceller parameter
Syntax echo-canceller parameter { convergence-rate value | max-amplitude value |
mix-proportion-ratio value | talk-threshold value }
undo echo-canceller parameter { convergence-rate | max-amplitude |
mix-proportion-ratio | talk-threshold }
View Voice view
Parameter convergence-rate value: Sets the convergence rate of comfort noise amplitude. It
ranges from 0 to 511. The greater the value, the quicker the convergence.
max-amplitude value: Sets the maximum amplitude of comfort noise. It ranges
from 0 to 2,048. The higher the value, the greater the maximum noise amplitude.
The value “0” indicates that the system performs only nonlinear processing and
does not add comfort noise.
mix-proportion-ratio value: Sets the comfort noise mixture proportion control
factor. It ranges from 0 to 3,000 and defaults to 100. The greater the value, the
higher the proportion of noise in the hybrid of noise and voice.
talk-threshold value: Sets the threshold of two-way talk. It ranges from 0 to 2.
Description Use the
echo-canceller parameter command to configure echo cancellation
parameters.