Purpose : CDMA Monitoring System "SCL-5020 C" (further system) is intended to ensure interception of voice conversation and service information in CDMA (IS-95A, IS-95B, CDMA 2000-1x) cellular network. System Type : To prevent detection of the system's operation and avoid interference to the operation of cellular network the System works as a passive equipment intercepting data directly from the air. System Basic Function : The system is able to monitor 4 base stations simultaneously working at the different frequency and Pilot-PN