There is no change for TCH establisment and TCH drop rate.
UL PC disabled in BSC. Adhoc frequency plan. BCCH and TCH frequency layers are seperated.
P.S. We have no SD channel on hopping TRxs.(Just on BCCH TRx) As you know BCCH TRx is using full power anyway.
Also i checked that there is any worst cell improved on same time so i see an improvement on SD part but there is no such case.