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2. FTTC / FTTK (fiber‐to‐the‐curb/kerb, ‐closet, or ‐cabinet): This is very similar to FTTN, but
the street cabinet or pole is closer to the user's premises, typically within 1,000 feet (300
m), within range for high‐bandwidth copper technologies such as wired Ethernet or IEEE
1901 power line networking and wireless Wi‐Fi technology. FTTC is occasionally
ambiguously called FTTP (fiber‐to‐the‐pole), leading to confusion with the distinct fiber‐to‐
the‐premises system.

3. FTTP (fiber‐to‐the‐premises): This term is used either as a blanket term for both FTTH and
FTTB, or where the fiber network includes both homes and small businesses.

a. FTTB (fiber‐to‐the‐building, ‐business, or ‐basement): Fiber reaches the boundary of the
building, such as the basement in a multi‐dwelling unit, with the final connection to the
individual living space being made via alternative means, similar to the curb or pole
technologies.

b. FTTH (fiber‐to‐the‐home): Fiber reaches the boundary of the living space, such as a box
on the outside wall of a home. Passive optical networks and point‐to‐point Ethernet are
architectures that deliver triple‐play services over FTTH networks directly from an
operator's central office.
4. FTTD (fiber‐to‐the‐desktop): Fiber connection is installed from the main computer room to
a terminal or fiber media converter near the user's desk.

5. FTTE / FTTZ (fiber‐to‐the‐telecom‐enclosure or fiber‐to‐the‐zone) is a form of structured
cabling typically used in enterprise local area networks, where fiber is used to link the main
computer equipment room to an enclosure close to the desk or workstation. FTTE and FTTZ
are not considered part of the FTTX group of technologies, despite the similarity in name.

Figure 26 – FTTX Access Networks
Increased competition from multiple system operators (MSOs), telcommunications, and Internet
Protocol television (IPTV) service providers worldwide are driving the deployment of quadruple‐play
services over next‐generation access networks. As a result, service providers are faced with many
new business and service delivery challenges. New optical access networks delivering higher
bandwidths for increased service offerings.

ITU‐T's Technical Reports and Specifications 241