CrossFire EU-S is a fronthual gateway with option translator, it translates the protocol between O-RAN FH Option 7-2x and option 8.
Through EU-S, traditional CPRI-based RRUs can be connected to O-DU to implement the ORAN architecture. Multiple RRUs share the same LOW-PHY functions deployed on EU-S, reducing the system complexity and cost.
EU-S supports directly connection of up to 12 RRUs. For largescale deployment scenarios, EU-O can also be used to expand the number of RRUs and increase system flexibility