Pennsylvania’s Telemarketer Registration Act provides a useful definition of an Established Business Relationship (EBR): “A prior or existing relationship formed by a voluntary two-way communication between a person or entity and a residential or wireless telephone subscriber, with or without an exchange of consideration, on the basis of an inquiry, application, purchase or transaction by the residential or wireless telephone subscriber regarding products or services offered by such persons of a entity. In regard to an inquiry, the person or entity shall obtain the consent of a residential or wireless telephone subscriber to continue the business relationship beyond the initial inquiry.”