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Reply To: Interference on Idle TCH


yes, the BTS listens to the frequencies currently used by their TRX in that TDMA frame.

it’s very simple indeed : the “empty” UL timeslots of the TRX are measured by the BTS. If the timeslot is using frequency 120, then the BTS will hear the noise on frequency 120.

At the end of the hour, the indicator shows the average RXLEV of the noise heard on the TS of this TRX.