A radio communication system includes ID control equipment, a operation control unit, line controller, pieces of base station, and radio terminals. In the radio communication system, environment information about identification information (IDs) etc. set for the radio terminals is managed effectively. In the ID control equipment, an ID information setting means sets information about IDs for the radio terminals. In the ID control equipment, the operation control unit or the line controller, an ID information storage unit (e.g. memory 4) stores the information about IDs set for the radio terminals by the ID control equipment.