In the LTE system, the mobile KPI is used to evaluate the mobile performance of the E-UTRAN network. It directly reflects the user experience. Which of the following is not a mobile KPI?

In the LTE system, the mobile KPI is used to evaluate the mobile performance of the E-UTRAN network. It directly reflects the user experience. Which of the following is not a mobile KPI?
A . Switching out the success rate (same frequency/different frequency:)
B . Call establishment success rate
C . Switching into success rate
D . Different system switching success rate

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Answer: B