http://www.ftc.gov/bcp/rulemaking/tsr/
Telemarketing Sales Rule - 16 CFR Part 310
http://www.ftc.gov/bcp/rulemaking/tsr/tsr-review.shtm
Cold Call Issue Summary - Article on Skirting the DNC by Co-Reg - FAQ Does the Registry Apply to Me
Telemarketing Sales Rule
http://www.fcc.gov/cgb/donotcall/