A、 Call Drop Rate=L.E-RAB.AbnormRel/L.E-RAB.NormRel*100%
B、 Call Drop Rate=L.E-RAB.AbnormRel/(L.E-RAB.NormRel+L.E-RAB.AbnormRel)*100%
C、 Call Drop Rate=L.E-RAB.AbnormRel/L.E-RAB.SuccEst*100%
D、 Call Drop Rate=L.E-RAB.AbnormRel/RRC Connection Setup Success*100%