The high-density ODF is a core plug-in frame unit that carries high-density cabling modules in ODN (Optical Distribution Network) / ODF (Optical Distribution Frame) systems. It is typically mounted on a standard 19-inch rack and is used for fiber termination, distribution, splicing and scheduling. Its main function is to achieve high-density integration and flexible management of fiber ports within a limited rack space through MPO/MTP multi-fiber connectivity and a modular frame structure. As a key node at the end of cabling in the machine room, it features modular plug-and-play, no on-site splicing and full front-access operation, enabling refined management of fiber cabling, improving deployment and O&M efficiency, ensuring business continuity, and providing support for high-bandwidth, high-density network construction.