Polycom SIP 2.2.0 manual Quality of Service QOS, Ethernet Ieee 802.1p/Q ethernet IP TOS IP

Configuration Files

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.signalAnnex	0, 1	Null	If set to 1 and voice.vadEnable is set to 1, Annex B is
B			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 or Null, there is no change to SDP.

Quality of Service <QOS/>

These settings control the Quality of Service (QOS) options.

This attribute includes:

•Ethernet IEEE 802.1p/Q <ethernet/>

•IP TOS <IP/>

Ethernet IEEE 802.1p/Q <ethernet/>

The following settings control the 802.1p/Q user_priority field:

•RTP <RTP/>

•Call Control <callControl/>

•Other <other/>

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