Washington (CNN) -- The Federal Communications Commission approved new rules Wednesday to further limit automatically dialed or prerecorded calls know as "robocalls" and automated text messages.

Under the new requirements, telemarketers will have to get permission in writing before placing an automated call to a consumer. Previously, companies that had an established business relationship with a particular consumer could call them without permission. For example, another FCC official not authorized to speak publicly explained, a bank could robocall one of its checking account customers to try to sell them insurance. The new rules prohibit that without written permission.