H3C Technologies H3C MSR 5600 - Manual (Page 31)

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Step Command Remarks
2. Enter voice view. voice-setup N/A
3. Adjust echo cancellation
parameters.
echo-canceler { convergence-rate
value | max-amplitude value |
mix-proportion-ratio value |
talk-threshold value }
By default, the convergence rate of
comfort noise amplitude is 0, the
maximum amplitude of comfort
noise is 256, the comfort noise
mixture proportion control factor is
100, and the two-way judgment
threshold is 1.
The echo-canceler enable
command must be configured for
the configured parameters to take
effect.
Enabling the nonlinear function of echo cancellation
After echo cancellation is enabled, nonlinear parts in the line can cause residual echo. The nonlinear
function, also called residual echo suppression, can remove the residual echo.
To enable the nonlinear function of echo cancellation:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter voice interface view. subscriber-line line-number N/A
3. Enable the nonlinear function
of echo cancellation.
nlp-on
By default, this function is enabled.
This command is available only
after you configure the
echo-canceler enable command.
Displaying and maintaining analog voice
interfaces
Execute display commands in any view.
Task Command
Display information about analog voice
interfaces.
display voice subscriber-line
Analog voice interface configuration examples
Two-dial configuration example for the FXO interface
As shown in Figure 9 , Router A and Router B are connected through an IP network and can reach each
other. The PBX is configured with a trunk number 07552003.