ISM RF target RSSI (in dBm). It specifies the target RSSI from all SUs to the AP. Based on this parameter, the AP can power level each SU so that it receives same level of signal strength from all SUs, regardless far or near. Note that when you set the Target RSSI from SU, you need to consider AP's RF Rx Threshold value. The Target RSSI from SU must be 5dB higher than the RF Rx Threshold. When the RF Rx Threshold is disabled, the setting of the Target RSSI from SU shall be no less than -75dBm.