AudioCodes Mediant 2000 User Manual page 494

Parameter
Time
[AnswerDetectorSilenceTime]
Web: Answer Detector
Redirection
[AnswerDetectorRedirection]
Web: Answer Detector Sensitivity
EMS: Sensitivity
[AnswerDetectorSensitivity]
Web: Silence Suppression
EMS: Silence Compression Mode
[EnableSilenceCompression]
Web: Echo Canceler
EMS: Echo Canceller Enable
[EnableEchoCanceller]
Web: Max Echo Canceller Length
[MaxEchoCancellerLength]
SIP User's Manual
Currently, not supported.
Defines the Answer Detector sensitivity.
The range is 0 (most sensitive) to 2 (least sensitive). The default
is 0.
Determines the Silence Suppression support. Silence
Suppression is a method for conserving bandwidth on VoIP calls
by not sending packets when silence is detected.

[0] Disable = Silence Suppression is disabled (default).

[1] Enable = Silence Suppression is enabled.

[2] Enable without Adaptation = A single silence packet is sent
during a silence period (applicable only to G.729).
Note: If the selected coder is G.729, the value of the 'annexb'
parameter of the fmtp attribute in the SDP is determined by the
following rules:

If EnableSilenceCompression is 0: 'annexb=no'.

If EnableSilenceCompression is 1: 'annexb=yes'.

If EnableSilenceCompression is 2 and IsCiscoSCEMode is 0:
'annexb=yes'.

If EnableSilenceCompression is 2 and IsCiscoSCEMode is 1:
'annexb=no'.
Note: This parameter can also be configured per IP Profile, using
the IPProfile parameter (see ''Configuring IP Profiles'' on page
204).
Enables echo cancellation (i.e., echo from voice calls is
removed).

[0] Disable

[1] Enable (default)
Note: This parameter can also be configured per IP Profile, using
the IPProfile parameter (see ''Configuring IP Profiles'' on page
204) and per Tel Profile, using the TelProfile parameter (see
''Configuring Tel Profiles'' on page 202).
Defines the maximum Echo Canceler Length (in msec), which is
the maximum echo path delay (tail length) for which the echo
canceller is designed to operate:

[0] Default = based on various internal device settings to attain
maximum channel capacity (default)

[11] 64 msec

[22] 128 msec
Notes:

For this parameter to take effect, a device reset is required.

Using 128 msec may reduce channel capacity. For example:
with DSP Template 0 and number of spans 4, the capacity is
reduced from 120 to 100. The reduction depends on the
combination of "DSP Template" and "Number of Spans". For
accurate figures, see DSP Templates on page 655.

It is unnecessary to configure the parameter
494
Description
Document #: LTRT-68814
Mediant 2000