User Manual

Table Of Contents
Menus and Parameters
Operation and Administration
147
should only be used in one of the two units in a point-to-point link, where in the
other unit the AIFS remains configured to two time slots. This ensures that the
unit with AIFS configured to one has an advantage over the other unit, provided
that the
Minimum Contention Window (section 4.2.6.5.2) parameter in both units
is configured to 0 to disable the contention window back-off algorithm.
NOTE
The AIFS parameter is not applicable when the Wireless Link Prioritization Option is enabled.
The available range is from 1 to 50 (time slots).
The default is 2 time slots.
CAUTION
An AIFS value of 1 should only be used in point-to-point applications (when the Wireless Link
Prioritization Option is enabled). Otherwise the default value of 2 must always be used. In a point-
to-point link, only one unit should be configured to an AIFS value of 1. When both units need to
transmit, the unit with an AIFS value of 1 will have an advantage over the unit with AIFS of 2. In this
case, the Minimum Contention Window parameter in both units must be configured to 0 to disable
the contention window back-off algorithm.
4.2.6.2.12 Maximum Number of Associa t ions (AU only)
The Maximum Number of Associations parameter defines the maximum number
of Subscriber Units that can be associated with the selected AU, while still
guaranteeing the required quality of service to customers.
Available values for AU-BS and AU-SA range from 0 to 512. For AUS-BS and
AUS-SA the range is from 0 to 8.
Default value for AU-BS and AU-SA is 512. For AUS-BS and AUS-SA the default
is 8.
NOTE
The Maximum Number of Associations must be set to a value of 124 or lower to enable Data
Encryption. As long as Data Encryption is enabled, the Maximum Number of Associations cannot
be set to a value higher than 124.
The Maximum Number of Associations Limit (512 when Data Encryption is disabled, 124 when
Data Encryption is enabled) is indicated in the Show Air Interface Parameters display.