Currently the incidence of using telephone for fraud is growing up to a new high level

cause huge losses to the people property. According to the root cause analysis

telephone fraud mechanism and behavior characteristics were discussed

network security model and the control system were researched

the recommending of core network number protection ability to ascend was proposed

and a set of early warning and intercept technology system based on big data model of signaling was developed. The real network testing and effect

as well as the key operations management countermeasures were presented.