Chapter 4 - Operation and Administration
4.2.6.2.12 Maximum Number of Associations (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
Default value for
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.
NOTE
There is no aging time for SUs. An SU is only removed from the list of associated SUs under the following conditions:
The SU failed to respond to 100 consecutive data frames transmitted by the AU and is considered to have "aged out".
During the last 6 minutes (or more) the SU did not transmit any data frame, and failed to respond to certain frames that typically are transmitted by the AU every 10 seconds. Since the sampling interval for this state is about 10 minutes, it means that the decision to remove the SU from the Associations Database will take place between 6 to 16 minutes from the time the SU ceased sending data or responding to these
Therefore, the database of associated SUs may include units no longer associated with the AU. If the number of associated SUs has reached the value of the Maximum Number of Associations parameter, the selected AU cannot serve additional SUs. To view the current number of associated SUs, use the Display Association Info option in the MAC Address Database menu. To delete inactive SUs from the database you must either disassociate them (see 4.2.6.2.16) or reset the AU.
4.2.6.2.13 Wireless Link Trap Threshold (AU only)
The Wireless Link Trap Threshold parameter defines the threshold for the wireless quality trap, indicating that the quality of the wireless link has dropped below (on trap) or has increased above (off trap) the specified threshold.
The Wireless Link Trap Threshold is in percentage of retransmissions, and the allowed range is from 1 to 100 (%).
The default is 30 (%).
4.2.6.2.14 Spectrum Analysis
Gaining knowledge of the noise characteristics per channel enables construction of a relatively noise free working environment. In order to gain information regarding noise characteristics in the location of the unit, the unit will enter
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