A comprehensive SPIT detection and prevention framework based on reputation model on call communication patterns

VolP is a promising technology for voice transmission on IP-based networks and it has many advantages over PSTN. One of the most important threats in these networks is unsolicited bulk calls, known as SPIT (Spam over Internet Telephony). The aim in this paper is to present this topic, a survey on detection techniques and anti-SPIT mechanisms. We propose an Anti-SPIT mechanism which is based on calculation of reputation using analysis of behaviors compared between normal users and SPITTERs for allow or block calls. Both the Service Provider and the Callee have role in the detection process. Also call lists will be updated in time.