The MMSI (Miniature Munitions Stores Interface) or EBR–1553 data bus is a relatively simple  network protocol used to share data between avionics subsystems. EBR-1553 is deployed on weapon systems, including Small Diameter Bomb (SDB). Sital’s EBR-1553 components provide DDC’s Enhanced Mini-ACE register/memory architecture; BC, RT, and Monitor operation. It also includes a hub that can be instantiated to provide any number of ports up to and including 31 nodes.