ZTR107A:BSCRPT_RATE_TCH_CALL_DROP
This measurement provides the call drop ratio on the TCHs per BSC, that is, the proportion of call drops on TCH to successful TCH seizures in the case of call and handover.
%.
BSC counters are calculation counters. This counter is measured according to the formula below when the measurement period ends. For details on the measurement point, see "Measurement Point" of each counter in the formula.
Call Drop Ratio on TCH per BSC =
([Call Drops on Traffic Channel per BSC]
/
([Successful TCH Seizures per BSC (Traffic Channel)] +
[Successful TCH Seizures in TCH handovers per BSC (Traffic Channel)])) x {100}