FTTdp, or “Fiber-to-the-Distribution Point,” is a broadband network architecture where optical fiber is extended close to the user’s premises, usually stopping at a small distribution point or node that serves a very limited number of homes or businesses, often as few as one. From this point, the connection to the individual premises is usually completed using existing copper lines for a very short distance, often less than 50 meters.

Here’s an overview of FTTdp:


  • Optical Line Terminal (OLT): Located at the service provider’s central office, it manages the FTTdp service and connects it to the broader internet.
  • Distribution Point Unit (DPU): A compact device, typically mounted on a pole or in a small underground or ground-level box. It transitions optical signals from the fiber into electrical signals that copper lines can transport.
  • User’s Modem/Router: At the user’s premises, which communicates with the DPU to access the internet.


  • Speed: FTTdp can provide very high-speed broadband services due to the very short length of the copper segment.
  • Reduced Copper Length: The short span of copper minimizes the loss and interference issues commonly found in longer copper connections.


  • High Speeds: By minimizing the copper length, FTTdp can support technologies like G.fast, which can deliver gigabit-level speeds over copper for short distances.
  • Flexibility: FTTdp can be a stepping stone to FTTH, allowing service providers to upgrade incrementally.
  • Cost Savings: Leveraging existing copper for the final short segment can be more economical than deploying fiber directly into each home.


  • Copper Limitations: Even short segments of copper have their limits. Over time, as demand for speed and bandwidth grows, the push for full fiber solutions will continue.
  • Powering: The DPU needs power. Sometimes it’s powered from the central office, but reverse power from the user’s premises can also be employed.

Comparison with Other Fiber Solutions:

  • FTTP/FTTH: Direct fiber connections to premises, offering the highest possible speeds.
  • FTTN: Fiber goes to a neighborhood node, serving multiple premises. The last mile is longer compared to FTTdp.
  • FTTC: Fiber extends to street cabinets, with a longer copper segment compared to FTTdp.


  • FTTdp is particularly useful in scenarios where it’s challenging or expensive to get fiber directly into a building, such as in heritage-listed locations or dense urban environments.

In essence, FTTdp provides a middle-ground solution that brings many of the benefits of full-fiber connections while leveraging the existing copper infrastructure for the final stretch. It offers an excellent balance between performance and cost, especially in challenging deployment areas.