Voice Activity Noise Floor; Call Progress Filter Threshold - Dialogic DMG1000 User Manual

Parameter Reference
3.10.2.6

Voice Activity Noise Floor

Description: Defines the noise floor for the voice activity detector (VAD). Signal levels below the
value selected will be treated as silence by the VAD.
Allowed Values: -80 dB to -10 dB
Default Value = -40 dB
INI File Parameter Name = vadNoiseFloor
Note: Unit requires a restart if this parameter value is changed.
3.10.2.7 Voice Activity Measurement Period (DMG2000 Only)
Description: Specifies the Measurement Period for the Voice Activity Detector. The Voice Activity
Detector will wait at least this long to determine whether the signal on the line is voice.
Allowed Values: 20 to 200
Default Value = 30
INI File Parameter Name = vadMeasurementPeriod
3.10.2.8 Voice Activity Signal to Noise Ratio (DMG2000 Only)
Description: Specifies the Signal to Noise Ration (SNR) for the Voice Activity Detector. Tonal
signals with an SNR greater than this value will be treated as tones and ignored by the Voice
Activity Detector.
Allowed Values: 10 to 20
Default Value = 18
INI File Parameter Name = vadMinSNR
3.10.2.9

Call Progress Filter Threshold

Description: Defines the lower threshold for the Call Progress Tone Detector. Call progress signals
below this value will be ignored.
Allowed Values: -38 dB to -20 dB
Default Value = -30 dB
INI File Parameter Name = cpFilterThreshold
Note: Unit requires a restart if this parameter value is changed.
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Dialogic 1000 and 2000 Media Gateway Series User's Guide — September 2007
Dialogic Corporation