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Reply To: RXLevel(Sub values)

Lonely Sky

Because Ful values are based upon all multiframes on SACCH mutliframes whether basestation transmit it or not. If DTX is used then the full values will be invalid for that period since they include RXlevel measurements at periods where no information has been sent.
On other hand sub values are based on those frames of SACCH multiframe which must be transmitted. So if DTX is used SUB values are considered.