The requirement to be able to securely terminate high-fiber fiber optic loose tube cables in networks according to the individual needs of the user is met with the modular fiber optic distribution system. It offers the option of either attaching high-fiber fiber optic cables with up to 288 fiber optic fibers directly to the 3 U subrack or splitting the fiber optic cables in the excess length storage or in the crossover field and feeding them to the individual modules via fiber guide tubes. The modular design of the slots means that all common fiber optic connectors can be accommodated, which allows up to 24 fibers to be accommodated in one module - when using LC connectors. In addition, pre-assembled breakout cables or distribution cables (ODS) can be routed directly to the modules and securely secured with cable ties or screw connections. Cable entry 1 1xM25 straight