It is a room on the floor of a building that contains hubs, switches, and other network components for the floor that is connected through a vertical backbone cable to the main equipment room, which is usually in the basement of the building (in a multi-floor building). TeleGeography's free interactive Internet Exchange Map depicts over 300 active Internet exchanges and more than 500 buildings in which those exchanges reside. In this section, we'll cover the function of these rooms, along with. Often, fiber enters the structure to a centralized rack or data room where it is connected to a modem. The modem connects to a network switch which connects each remote point (rooms, floors, distributed network switches, etc. Larger projects often feature a main. PON (Passive Optical Network) Most FTTH networks are based on passive optical network architectures, simply because that's usually the lowest cost way to design a FTTH network. These can behave like a typical Ethernet switch.
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