1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Supplement
4 Abbreviations and acronyms
5 Conventions
6 Overview of telephone service scam
6.1 Categories of telephone service scam characteristics
6.2 Typical scamming scenarios
7 Characteristics analysis
7.1 Time-related characteristics of calling
7.2 Characteristics of the calling numbers
7.3 Calling mode characteristics
8 Key technologies of the telephone service scam
8.1 Discovery
8.2 Judgement
8.3 Disposition
9 Structure of countering telephone service scam functions
9.1 General structure
9.2 Functions of components
9.3 Reference model
10 Countering processing