Exactly three years ago, Huawei introduced the eLTE Success system (Unified System of Converged Communications, Emergencies, Security and Services in Emergency Long Term Evolution), a technology that allows to unify communications of the different security and emergency services of the city to improve its efficiency. In the 9th Green Standards Week of the ITU, the company presented the progress of its implementation in the town of Rivas-Vaciamadrid, 15 kilometers from the center of Madrid.