The entrance facility consists of the telecommunications service entrance to the building and the backbone pathways between buildings.
The entrance facility is the point at which the outdoor plant cable connects with the building’s backbone cabling. This is usually the demarcation point between the third-party service provider and the customer’s proprietary systems. Design recommendations are in the TIA/ EIA-569-B, which covers cables, connecting hardware, and protection devices.
The entrance facility may also house the backbone links to other buildings in a campus. Public network interface equipment and telecommunications equipment may also be in the entrance facility. The location should be dry, and near the vertical backbone pathways. The entrance facility should be provisioned – as is the telecommunications room – for considerations such as environment, HVAC, lighting, doors, and electrical power.