Hi, Michele!
Thanks for your replay, but there looks that problem is a little bit more deeper, because for all network we have the same radioMeasRep and radioMeasGran values but problem occurs only in DCS1800 sectors and only time to time.
Another interesting thing that I noticed is that BS power reduction level for those affected calls that are in DCS sectors goes up to max almoust immediatly, even if UL level isn’t good and worsens but DL all the time is the same.