Call Drops During Loopback

Measurement Counter

CM390:CELL_LOOP_DROPS

Description

This measurement provides the number of call drops due to various reasons when the MS is in the local switching state.

Unit

Integer number or integer.

Measurement Point

At the end of the granularity period, this counter is calculated by using the following formula.

Formula

Call Drops During Loopback = Call Drops due to Loopback Start Failure + Call Drops due to Handover Failure During the Loopback + Call Drops in Stable BSC Loopback State + Call Drops in Stable BTS Loopback State + Call Drops due to Failures to Return to Normal Call from Loopback