“American consumers have made it crystal clear that few things annoy them more than the billions of commercial telemarketing robocalls they receive every year,” said Jon Leibowitz, Chairman of the FTC. “Starting September 1, this bombardment of prerecorded pitches, senseless solicitations, and malicious marketing will be illegal. If consumers think they’re being harassed by robocallers, they need to let us know, and we will go after them.”
The new requirement is part of amendments to the agency’s Telemarketing Sales Rule (TSR) that were announced a year ago. After September 1, sellers and telemarketers who transmit prerecorded messages to consumers who have not agreed in writing to accept such messages will face penalties of up to $16,000 per call
The new rule does not cover certain health care messages and messages which are used for informative purpose where a airline is informing about flight getting canceled
More Information on http://www.ftc.gov/opa/2009/08/robocalls.shtm