Draytek Vigor 2130 Series, User Manual, Page: 101 / 353

Vigor2130 Series User’s Guide 91
Scan It is used to discover all the connected AP. The results will be
shown on the box above this button.
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: Vigor2130 provides standard WMM configuration in