Draytek Vigor2130 series User Manual page 208

Txop
ACM
AckPolicy
Click OK to save the settings.
be smaller; however, the difference between AC_BE and
AC_BK categories must be greater.
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.
It is an abbreviation of Admission control Mandatory. It can
restrict stations from using specific category class if it is
checked.
Note: Vigor1000 provides standard WMM configuration in
the web page. If you want to modify the parameters, please
refer to the Wi-Fi WMM standard specification.
"Uncheck" (default value) the box means the AP router will
answer the response request while transmitting WMM
packets through wireless connection. It can assure that the
peer must receive the WMM packets.
"Check" the box means the AP router will not answer any
response request for the transmitting packets. It will have
better performance with lower reliability.
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Vigor2130 Series User's Guide