Additionally, earlier this month AT&T announced it will be moving forward with GPON deployments starting in 2008. What’s GPON you say? It’s a form of optical networking technology that AT&T will use when building out fiber to the home (FTTH). Today AT&T’s U-verse service runs on a fiber-to-the-node (FTTN) architecture, but FTTN has limitations, and those limitations are glaringly obvious when compared to Verizon’s all-fiber approach. In new locations (called greenfield) AT&T has decided it will match Verizon fiber for fiber.