Fiber access terminal

A fiber access terminal, also known as a fiber distribution hub (FDH), is a connection point between the fiber optic feeder and distribution cables in a fiber optic network. It provides centralized connectivity for multiple fiber subscribers in Fiber to the Home (FTTH) or Fiber to the Premises (FTTP) networks.

The main functions of a fiber access terminal are:

1. Housing fiber optic splitters and connectors to connect the feeder cable coming from the central office to multiple distribution cables going to customer premises. This enables one feeder cable to serve many customers.

2. Providing a protective enclosure and splice trays for fiber optic cable splicing and termination. This protects the fiber connections from environmental damage.

3. Allowing easy reconfiguration and maintenance of fiber connections as customers are added or changed. Fiber cross-connects can be easily moved in the access terminal.

4. Serving as an access point for fiber network testing and troubleshooting. Optical test equipment can be connected at the terminal to evaluate fiber links.

Key components within a fiber access terminal include fiber splice trays, fiber patch panels, fiber splitters, fiber connectors, and cable entry ports. The terminals come in various sizes to support different numbers of customers. Many are hardened for outdoor installations on poles or in ground enclosures.