Draytek Vigor 3200 Series, User Manual, Page: 300 / 356

Vigor3200 Series User’s Guide 290
Item Description
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: Vigor2920 provides standard WMM configuration in the
web page. If you want to modify the parameters, please refer to
the Wi-Fi WMM standard specification.
AckPolicy “ 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.
After finishing all the settings here, please click OK to save the configuration.