Dayton, Ohio -- NCR Corp. plans to launch a $15 million, business-to-business ad campaign on April 19. Based on NCR's new tag line, ``Transforming transactions into relationships,'' the integrated campaign will use newspapers, television, radio, billboards, trade publications and Internet banners. The campaign will emphasize how NCR, through its ATMs, self-service kiosks and point-of-sale systems, enables businesses to interact with consumers. London-based Circus Communications handled the creative. The campaign is scheduled to run for eight weeks, with a second wave planned for later in the year.