First enacted into the federal register in 1995 and amended numerous times since, the Telemarketing Sales Rule (TSR) is the Federal Trade Commission’s (FTC) primary document for enforcing telemarketing regulations, particularly the National Do Not Call (DNC) Registry. According to the FTC’s rule summary, the TSR “requires telemarketers to make specific disclosures of material information; prohibits misrepresentations; sets limits on the times telemarketers may call consumers; prohibits calls to a consumer who has asked not to be called again; and sets payment restrictions for the sale of certain goods and services.”