OSI represents best-in-breed Partners listed here whose products represent the finest solutions in the communications industry. Through these relationships, we provide complete end-to-end services and solutions. These certifications are only given to business partners who have met rigorous requirements for technical expertise and customer satisfaction. These distinctions are a direct result of the talent, dedication, and commitment of the OSI team including pre-sales engineering, project management, post-sales support, account management and training.