How does FTTH work?

The defining characteristic of FTTH is that it connects optical fiber directly to residences. It uses optical fiber for most or all of last-mile telecommunications. Optical fiber transmits data using light signals to achieve higher performance.

FTTH access networks are basically structured like this: fiber optic cables run from a central office, through a fiber distribution hub (FDH), then through a network access point (NAP), then finally into the home through a terminal that serves as a junction box.