AudioCodes Mediant 4000 SBC User Manual page 881

User's Manual
Parameter
Echo Canceller Type
configure voip/media voice/echo-
canceller-type
[EchoCancellerType]
Attenuation Intensity
configure voip/media voice/acoustic-
echo-suppressor-attenuation-intensity
[AcousticEchoSuppAttenuationIntensity]
Max ERL Threshold - DB
configure voip/media voice/acoustic-
echo-suppressor-max-ERL
[AcousticEchoSuppMaxERLThreshold]
Min Reference Delay x10 msec
configure voip/media voice/acoustic-
echo-suppressor-min-reference-delay
[AcousticEchoSuppMinRefDelayx10ms]
Max Reference Delay x10 msec
configure voip/media voice/acoustic-
echo-suppressor-max-reference-delay
[AcousticEchoSuppMaxRefDelayx10ms]
configure voip > media voice > echo-
canceller-hybrid-loss
[ECHybridLoss]
configure voip > media voice > echo-
canceller-NLP-mode
[ECNLPMode]
configure voip > media voice > echo-
canceller-aggressive-NLP
[EchoCancellerAggressiveNLP]
configure voip > media RTP-RTCP >
number-of-SID-coefficients
Version 7.2
60. Configuration Parameters Reference
required.
Defines the echo canceller type.

[0] Line echo canceller = (Default) Echo canceller for
Tel side.

[1] Acoustic Echo suppressor - network = Echo
canceller for IP side.
Defines the acoustic echo suppressor signals identified as
echo attenuation intensity.
The valid range is 0 to 3. The default is 0.
Defines the acoustic echo suppressor maximum ratio
between signal level and returned echo from the phone (in
decibels).
The valid range is 0 to 60. The default is 10.
Defines the acoustic echo suppressor minimum reference
delay (in 10-ms units).
The valid range is 0 to 40. The default is 0.
Defines the acoustic echo suppressor maximum reference
delay (in 10-ms units).
The valid range is 0 to 40. The default is 40 (i.e., 40 x 10 =
400 ms).
Defines the four-wire to two-wire worst-case Hybrid loss,
the ratio between the signal level sent to the hybrid and the
echo level returning from the hybrid.

[0] = (Default) 6 dB

[1] = N/A

[2] = 0 dB

[3] = 3 dB
Global parameter enabling Non-Linear Processing (NLP)
mode for the echo cancellation.

[0] = (Default) NLP adapts according to echo changes

[1] = Disables NLP
Enables the Aggressive NLP at the first 0.5 second of the
call.

[0] = Disable

[1] = (Default) Enable. The echo is removed only in the
first half of a second of the incoming IP signal.
Note: For the parameter to take effect, a device reset is
required.
Defines the number of spectral coefficients added to an
SID packet being sent according to RFC 3389.
881
Description
Mediant 4000 SBC