Allied Telesis AT-TQ Series, User Manual, Page: 139 / 174

AT-TQ Wireless Access Point Series User’s Guide
139
If the first random backoff wait time
expires before the data frame is sent, a
retry counter is increased and the random
backoff value (window) is doubled.
Doubling continues until the size of the
random backoff value reaches the
number defined in the maximum
contention window.
Valid values for this parameter are: 1, 3, 7,
15, 31, 63, 127, 255, 511, and 1023. This
parameter must be lower than the cwMax
value.
cwMax (Maximum
Contention Window) Specifies the maximum contention
window, which is the upper limit (in
milliseconds) for doubling the random
backoff value. The doubling continues
until either the data frame is sent or the
maximum contention size is reached.
Once the maximum contention window is
reached, retries continue until a maximum
number of retries is reached.
Valid values for this parameter are: 1, 3, 7,
15, 31, 63, 127, 255, 511, and 1023. This
parameter must be higher than the cwMin
value.
Max. Burst Length Specifies the maximum burst length (in
milliseconds) for packet bursts on the
wireless network. A packet burst is a
collection of multiple frames transmitted
without header information. The
decreased overhead results in higher
throughput and better performance.
This is an AP EDCA parameter only and
as such applies only to egress traffic from
the access point to the clients.
The range is 0.0 to 999 milliseconds.
Table 23. Modify QoS Queue Parameters Window (Continued)
Column Description