Polycom Version 1.4.x 17 manual Quality of Service QOS, Voice Activity Detection VAD

Administrator Guide - SoundPoint® IP / SoundStation® IP Optimization

4.6.1.6.10 Voice Activity Detection <VAD/>

These settings control the performance of the voice activity detection (silence suppres- sion) feature.

	Permitted
Attribute	Values	Default	Interpretation
voice.vadEnable	0, 1	0	If set to 1, enable VAD.
voice.vadThresh	integer from	15	The threshold for determining what is active
	0 to 30		voice and what is background noise in dB. This
			does not apply to G.729AB codec operation
			which has its own built-in VAD function.

4.6.1.7 Quality of Service <QOS/>

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

4.6.1.7.1 Ethernet IEEE 802.1p/Q <Ethernet/>

These settings control the 802.1p/Q user_priority field.

4.6.1.7.1.1 RTP <RTP/>

These parameters apply to RTP packets.

Attribute	Permitted	Default	Interpretation
	Values
qos.ethernet.rtp.user_priority	0-7	5	User-priority used for RTP packets.

4.6.1.7.1.2 Call Control <CallControl/>

These parameters apply to call control packets, such as the network protocol signaling.

Attribute	Permitted	Default	Interpretation
	Values
qos.ethernet.callControl.user_priority	0-7	5	User-priority used for call con-
			trol packets.

86 Copyright © 2004 Polycom, Inc.