D-Link DVA-G3340S manual Pcr

	desirable to specify the PCR.
	CBR – Constant Bit Rate, usually used in
	circumstances where very low packet loss and
	very low Cell Delay Variable (CDV) are
	desirable.
	VBR – Variable Bit Rate, usually used when
	network traffic is characterized by bursts of
	packets at variable intervals, and some
	moderate packet loss and delay is acceptable.
	This category is typically used for audio and
	video applications such as teleconferencing. The
	network must support QoS Class 2 to use VBR.
	Peak Cell Rate – The PCR is inversely related to the
PCR	time interval between ATM cells. It is specified for all
	three service categories (UBR, CBR and VBR) in
	Kbps.
	Sustainable Cell Rate – The SCR is defined for the
	VBR service category. This is the rate that can be
SCR	sustained for “bursty”, on-off traffic sources. It is a
	function of Maximum Burst Size (MBS) and the time
	interval (between cells).

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