Draytek 2750 manual WMM Capable, Apsd Capable, Aifsn, CWMin/CWMax, Txop

WMM Capable	To apply WMM parameters for wireless data transmission,
	please click the Enable radio button.
APSD Capable	The default setting is Disable.
Aifsn	It controls how long the client waits for each data
	transmission. Please specify the value ranging from 1 to 15.
	Such parameter will influence the time delay for WMM
	accessing categories. For the service of voice or video
	image, please set small value for AC_VI and AC_VO
	categories For the service of e-mail or web browsing,
	please set large value for AC_BE and AC_BK categories.
CWMin/CWMax	CWMin means contention Window-Min and CWMax
	means contention Window-Max. Please specify the value
	ranging from 1 to 15. Be aware that CWMax value must be
	greater than CWMin or equals to CWMin value. Both
	values will influence the time delay for WMM accessing
	categories. The difference between AC_VI and AC_VO
	categories must be smaller; however, the difference
	between AC_BE and AC_BK categories must be greater.
Txop	It means transmission opportunity. For WMM categories
	of AC_VI and AC_VO that need higher priorities in data
	transmission, please set greater value for them to get
	highest transmission opportunity. Specify the value
	ranging from 0 to 65535.
ACM	It is an abbreviation of Admission control Mandatory. It
	can restrict stations from using specific category class if it
	is checked.
	Note: Vigor2750 provides standard WMM configuration
	in the web page. If you want to modify the parameters,
	please refer to the Wi-Fi WMM standard specification.

Vigor2750 Series User’s Guide 87