Polycom SIP 3.1 manual Voice Activity Detection vad, Quality Monitoring quality monitoring

Administrator’s Guide SoundPoint IP / SoundStation IP

Attribute	Default
voice.txEq.hf.IP_430.postFilter.enable	1
voice.txEq.hf.IP_500.postFilter.enable	1
voice.txEq.hf.IP_600.postFilter.enable	1
voice.txEq.hf.IP_601.postFilter.enable	1
voice.txEq.hf.IP_650.postFilter.enable	1
voice.txEq.hf.IP_4000.postFilter.enable	0
voice.txEq.hf.IP_6000.postFilter.enable	0
voice.txEq.hf.IP_7000.postFilter.enable	0

Voice Activity Detection <vad/>

These settings control the performance of the voice activity detection (silence suppression) feature.

	Permitted
Attribute	Values	Default	Interpretation
voice.vadEnable	0, 1	0	If set to 1, enable VAD.
voice.vadThresh	integer from 0	15	The threshold for determining what is active voice and
	to 30		what is background noise in dB. This does not apply to
			G.729AB codec operation which has its own built-in VAD
			function.
voice.vad.	0, 1	Null	If set to 1 or Null and voice.vadEnable is set to 1,
signalAnnexB			Annex B is used. A new line can be added to SDP
			depending on the setting of this parameter and the
			voice.vadEnable parameter.
			• If voice.vadEnable is set to 1, add attribute line
			a=fmtp:18 annexb="yes" below a=rtpmap… attribute
			line (where '18' could be replaced by another
			payload).
			• If voice.vadEnable is set to 0, add attribute line
			a=fmtp:18 annexb="no" below a=rtpmap… attribute
			line (where '18' could be replaced by another
			payload).
			If set to 0, there is no change to SDP.

Quality Monitoring <quality monitoring/>

This attribute includes:

•Central Report Collector <collector/>

•Alert Reports <alert/>

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