Coder Parameters; Table 6-54: Coder Parameters - AudioCodes Mediant 2000 User Manual

Parameter
[EchoCancellerAggressiveNLP]
[EnableNoiseReduction]
Web: Comfort Noise Generation
Negotiation
EMS: Comfort Noise Generation
[ComfortNoiseNegotiation]
Web: Enable RFC 3389 CN
Payload Type
EMS: Comfort Noise Enable
[EnableStandardSIDPayloadType]

6.16.3 Coder Parameters

The coder parameters are described in the table below.
Parameter
[EnableEVRCVAD]
EMS: VBR Coder DTX Min
[EVRCDTXMin]
SIP User's Manual
Enables or disables the Aggressive NLP at the first 0.5 second
of the call. When enabled, the echo is removed only in the first
half a second of the incoming IP signal.

[0] = Disable (default)

[1] = Enable
Note: For this parameter to take effect, a device reset is
required.
Enables or disables the DSP Noise Reduction mechanism.

[0] = Disable (default).

[1] = Enable.
Note: When this parameter is enabled the channel capacity
might be reduced.
Enables negotiation and usage of Comfort Noise (CN).

[0] Disable = Disable (default).

[1] Enable = Enable.
The use of CN is indicated by including a payload type for CN
on the media description line of the SDP. The device can use
CN with a codec whose RTP time stamp clock rate is 8,000 Hz
(G.711/G.726). The static payload type 13 is used. The use of
CN is negotiated between sides. Therefore, if the remote side
doesn't support CN, it is not used.
Note: Silence Suppression must be enabled to generate CN.
Determines whether Silence Indicator (SID) packets are sent
according to RFC 3389.

[0] Disable = G.711 SID packets are sent in a proprietary
method (default).

[1] Enable = SID (comfort noise) packets are sent with the
RTP SID payload type according to RFC 3389. Applicable
to G.711 and G.726 coders.

Table 6-54: Coder Parameters

Enables or disables the EVRC voice activity detector.

[0] = Disable (default)

[1] = Enable
Note: Supported for EVRC and EVRC-B coders.
Defines the minimum gap between two SID frames when using
the EVRC voice activity detector. Units are in EVRC frame size
(20 msec).
The range is 0 to 20000. The default value is 12.
Note: Supported for EVRC and EVRC-B coders.
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Description
Description
Document #: LTRT-68809
Mediant 2000