Analysis of applicability of traditional spam regulations to VoIP spam

As adoption of VoIP service increases, concern about spreading of VoIP spam is increasing also. In this paper, we analyze applicability of traditional spam regulations to VoIP spam. Specifically, we chose several representative countering spam regulations - opt-out, opt-in, labeling and pricing. As the result of analysis, we can see that the applicability differs according to the type of regulation and the type of VoIP spam