AT&T Brand Guidelines at a Glance 3 Globe symbol AT&T tagline AT&T logotype Globe symbol AT&T tagline AT&T logotype Horizontal configuration Vertical configuration Signature with Tagline The signature with tagline has three components: the globe symbol, the AT&T logotype and the AT&T tagline. These signature components are carefully drawn artwork and should never be redrawn or altered. The signature with tagline in the horizontal configuration is the preferred version.