Edimax Technology AR-7266WNA, AR-7266WNB manual Parameter Description

Parameter	Description
IP QoS	Click the radio button to enable or disable the IP QoS
	function.
Default QoS	Select the default mode of QoS from the list.
	IP Precedence:
	In QoS, a three-bit field in the ToS byte of the IP header
	(see RFC 791). Using IP Precedence, a network
	administrator can assign values from 0(the default) to 7
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