While there are no federal laws specifically prohibiting the use of robo dialing, the Federal Communications Commission (FCC) has established rules that limit its use. These rules generally prohibit telemarketers from using robo dialing to call consumers who have not given their prior express consent to receive such calls. In addition, the FCC's rules require telemarketers to provide an opt-out opportunity during each robo call, and they place other restrictions on the use of robo dialers (such as limits on the number of abandoned or unanswered calls that can be made). Violations of the FCC's rules can result in significant penalties, including fines.