Coder Parameters - AudioCodes Mediant 2000 User Manual

45.10.2 Coder Parameters

The coder parameters are described in the table below.
Parameter
[EnableEVRCVAD]
EMS: VBR Coder DTX Min
[EVRCDTXMin]
EMS: VBR Coder DTX Max
[EVRCDTXMax]
EMS: VBR Coder Header
Format
[VBRCoderHeaderFormat]
EMS: VBR Coder Hangover
[VBRCoderHangover]
EMS: AMR Coder Header
Format
[AMRCoderHeaderFormat]
DSP Templates Table
Web: DSP Template Mix Table
EMS: VoP Media Provisioning
> General Settings
[DSPTemplates]
User's Manual
Coder Parameters
Enables 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 is 12.
Note: Supported for EVRC and EVRC-B coders.
Defines the maximum 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 is 32.
Note: This parameter is applicable only to EVRC and EVRC-B
coders.
Determines the format of the RTP header for VBR coders.

[0] = (Default) Payload only (no header, TOC, or m-factor) -
similar to RFC 3558 Header Free format.

[1] = Supports RFC 2658 - 1 byte for interleaving header
(always 0), TOC, no m-factor.

[2] = Payload including TOC only, allow m-factor.

[3] = RFC 3558 Interleave/Bundled format.
Defines the required number of silence frames at the beginning of
each silence period when using the VBR coder silence
suppression.
The range is 0 to 255. The default is 1.
Determines the payload format of the AMR header.

[0] = Non-standard multiple frames packing in a single RTP
frame. Each frame has a CMR and TOC header.

[1] = AMR frame according to RFC 3267 bundling.

[2] = AMR frame according to RFC 3267 interleaving.

[3] = AMR is passed using the AMR IF2 format.
Note: Bandwidth Efficient mode is not supported; the mode is
always Octet-aligned.
This table parameter allows the device to use a combination of two
DSP templates and determines the percentage of DSP resources
allocated per DSP template.
The format of this parameter is as follows:
[DspTemplates]
FORMAT DspTemplates_Index =
DspTemplates_DspTemplateNumber,
586
Description
Document #: LTRT-68822
Mediant 2000