This presentation covers Call Setup Analysis with a Drive Testing perspective. It goes through the signaling as well as briefs the common causes of call setup failure.
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Call Setup Analysis September-24-14 2:30 PM
Description: A complete call setup procedure contains the RRC connection, RAB setup, and Direct Transfer. Generally only the RRC connection and the RAB setup can be observed from RAN and it is usually assumed that no error occurs when RAN handles the direct transfer messages. That is, the authentication procedure is considered to be successfully performed. This KPI can be used to evaluate the radio access success ratio in a RNC, and the access failures caused by the SCCP congestion are not considered in this call setup procedure.