Allied Telesis AT-TQ Series, User Manual, Page: 138 / 174

Chapter 6: Services Menu
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Table 23. Modify QoS Queue Parameters Window
Column Description
AP EDCA Parameters
Queue Specifies the four egress queues:
Data 0 (Voice): High priority queue, with
minimum delay. The queue is used to
store time-sensitive data, such as VOIP
and streaming media.
Data 1 (Video): High priority queue, with
minimum delay. The queue is used to
store time-sensitive data, such as video
traffic.
Data 2 (best effort): Medium priority
queue, with minimum throughput and
delay. The queue is used to store most
traditional IP data.
Data 3 (Background): Lowest priority
queue, with high throughput. This queue
is used for bulk data that requires
maximum throughput and is not time-
sensitive, such as FTP packets.
AIFS (InterFrame Space) Specifies the Arbitration Inter-Frame
Spacing (AIFS) value, which controls the
wait time for data frames. The wait time is
measured in slots. The range is 1 to 15
slots.
cwMin (Minimum
Contention Window) Specifies a value that an algorithm uses to
determine the initial random backoff wait
time (window) for resending packets.
This value is the upper limit (in
milliseconds) of a range from which the
access point determines the initial random
backoff wait time.
The first random number the access point
generates will be between 0 and this
number.