This Armored Optical MPO OM3 Fiber CPRI Cable is used for 5G Base Station networking, to connect from AAU to DU. AAU side is 100G QSFP28 module, DU side is 4x 25G SFP28 module. So the cable is MPO to 4x DLC armored cable.

AAU is Active Antenna Unit, using Massive MIMO technology to improve the signals covering for high frequency.

DU is Distribute Unit. The transmission between AAU to DU is fronthaul.

CU is Centralized Unit. The transmission between DU to CU is midhaul.