.姓名:刘峻霖 班级:通信143班学号:2014101108附 录一、英文原文:Detecting Anomaly Trafc using Flow Data in the real VoIP networkI. INTRODUCTIONRecently, many SIP3/RTP4-based VoIP applications and services have appeared and their penetration ratio is gradually increasing due to the free or cheap call charge and the easy subscription method. Thus, some of the subscribers to the PSTN service tend to change their home telephone services to VoIP products. For example, companies in Korea such as LG