Cerio PS-200N-AX User Manual page 34

and traditional IP data which are less time-sensitive but often more data-intensive are
expected to tolerate longer wait times.
AC Type：

Queue
AC_BK Background
AC_BE Best Effort
AC_VI Video
AC_VO Voice
CWmin：Minimum Contention Window. This parameter is input to the algorithm that

determines the initial random backoff wait time ("window") for retry of a transmission.
The value specified here in the Minimum Contention Window is the upper limit (in
milliseconds) of a range from which the initial random backoff wait time is
determined.。
CWmax：Maximum Contention Window. The value specified here in the Maximum

Contention Window is the upper limit (in milliseconds) for the doubling of the random
backoff value. This doubling continues until either the data frame is sent or the
Maximum Contention Window size is reached. Once the Maximum Contention
Low High throughput. Bulk data that requires maximum
throughput and is not time-sensitive is sent to this
queue (FTP data, for example).
Medium Medium throughput and delay. Most traditional IP
data is sent to this queue.
High Minimum delay. Time-sensitive video data is
automatically sent to this queue.
High Time-sensitive data like VoIP and streaming media
are automatically sent to this queue.
CERIO software core : cen_v3.0