FTTX refers to all types of fiber infrastructure including fiber-to-the-home (FTTH), fiber-to-the-premises (FTTP), fiber-to-the-curb (FTTC), and fiber-to-the-node (FTTN).
FTTH stands for fiber-to-the-home and is synonymous with FTTP (fiber-to-the-premises). They both refer to a fiber optic cable running directly from the Internet Service Provider (ISP) to a home or business location.
FTTC stands for fiber-to-the-curb and refers to a fiber optic cable run to the curb near the user with a copper ethernet cable connecting the fiber at the curb to the final location.
FTTN stands for fiber-to-the-node and refers to a fiber optic cable running to service a large area with copper ethernet cables connecting each location in service area to the node.