CM397:CELL_LOOP_START_FAIL_DROPS
After seizing a channel, the MS starts the local switching. This measurement provides the number of call drops due to the failure in starting the local switching caused by different reasons. The cause value can be Terrestrial Resource Request Failure, Failures on the BTS Side, or Timer Expired.
Integer number or integer.
At the end of the granularity period, this counter is calculated by using the following formula.
Call Drops due to Loopback Start Failure = Call Drops due to BSC Loopback Start Failure (Terrestrial Resource Request Failure) + Call Drops due to BSC Loopback Start Failure (Others) + Call Drops due to BTS Loopback Start Failure (Terrestrial Resource Request Failure) + Call Drops due to BTS Loopback Start Failure (Failures on the BTS Side) + Call Drops due to BTS Loopback Start Failure (Others) + Call Drops due to Loopback Start Failure (Timer Expired)