A: ODF sits between transport shelves and backbone fibers; must provide easy re-patching for channel testing and wavelength assignment. Wall-Mount ODF: Compact units suitable for telecom rooms or small setups. Related: Single vs Dual Fiber WDM Architectures. Outdoor ODF: Weatherproof. An Optical Distribution Frame (ODF) is the physical heart of any structured fiber network. In plain terms, an ODF is the enclosure where incoming fiber cables are routed, spliced, terminated and cross-connected to the active equipment or jumper/patchcords that feed the rest of a network. Bottom installation: Select a proper installation position in the equipment room and drill four holes in the floor. In FTTH, FTTB, and other fiber access networks, terms such as Fiber Optic Termination Box, Fiber Distribution Box (FDB), and ODF (Optical Distribution Frame) are frequently mentioned. Although all three are related to fiber connection and management, their installation locations, functional roles. Optical fiber ODF is suitable for the connection of optical cables and optical communication equipment.