– Complete site (all 03 sectors ) went down due to TXN/Power and after restoration CDR (Radio+HO) of one or two cells will be degarded
ITt may be that the rate of drop is high because the number of calls just after power restoration is low.
– in some cases site itself will be OK but front facing neigbor CDR will be degarded after dip in RTCH
the design of front facing neigbor wasn’t actually prepare to handle such calls (nor the nieghborhood). Their new serving area are extended and obviously this can be source of interferences that can drop a call. peaks of RMS_TA_MAX should be noticed on these cells on those particular days;