No, power dialers and autodialer software are not illegal. However, organizations must take certain proactive steps to ensure they’re using their dialing system in a compliant manner.  Automated telephone dialing systems (ATDS) are regulated in the US by the federal Telephone Consumer Protection Act (TCPA), rules of the Federal Communications Commission (FCC), and individual state regulations. The specific rules and regulations vary but, in general, the TCPA prohibits using an ATDS to call consumers who have not provided prior express written consent.  To maximize dialing productivity while supporting compliance, Convoso recommends working with expert counsel to develop a risk mitigation plan and implement TCPA best practices.